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Chevrolet Kodiak 2008 Owner's Manual

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2008 Chevrolet Kodiak Owner Manual

Seats and Restraint Systems ........................... 1-1

Front Seats

............................................... 1-2

Rear Seats

.............................................. 1-10

Safety Belts

............................................. 1-11

Child Restraints

....................................... 1-28

Airbag System

......................................... 1-48

Restraint System Check

Features and Controls ..................................... 2-1

Keys

........................................................ 2-2

Doors and Locks

....................................... 2-6

Windows

.................................................. 2-8

Starting and Operating Your Vehicle

Mirrors

.................................................... 2-51

Storage Areas

......................................... 2-53

Instrument Panel ............................................. 3-1

Instrument Panel Overview

Climate Controls

...................................... 3-20

Warning Lights, Gages, and Indicators

Audio System(s)

....................................... 3-47

Driving Your Vehicle ....................................... 4-1

Your Driving, the Road, and Your Vehicle

Towing

................................................... 4-24

............................ 1-60

........... 2-10

.......................... 3-4

........ 3-24

..... 4-2

Service and Appearance Care .......................... 5-1

Service

..................................................... 5-4

Fuel

......................................................... 5-7

Checking Things Under the Hood

Rear Axle

............................................... 5-72

Four-Wheel Drive

..................................... 5-73

Front Axle

............................................... 5-74

Noise Control System

Bulb Replacement

Windshield Wiper Blade Replacement

Other Service Items

Tires

...................................................... 5-82

Appearance Care

..................................... 5-94

Vehicle Identiﬁcation

Electrical System

.................................... 5-102

Capacities and Speciﬁcations

Maintenance Replacement Parts

Maintenance Schedule ..................................... 6-1

Maintenance Schedule

Customer Assistance Information .................... 7-1

Customer Assistance and Information

Reporting Safety Defects

Vehicle Data Recording and Privacy

Index ................................................................ 1

M

............... 5-22

............................... 5-75

.................................... 5-76

......... 5-76

.................................. 5-78

............................... 5-101

................... 5-109

............... 5-115

................................ 6-2

........... 7-2

............................ 7-9

........... 7-11

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Summary of Contents for Chevrolet Kodiak 2008

Page 1 2008 Chevrolet Kodiak Owner Manual Seats and Restraint Systems ......1-1 Service and Appearance Care ......5-1 Front Seats Service ..........1-2 ............. 5-4 Rear Seats Fuel ..........1-10 ............5-7 Safety Belts ..........1-11 Checking Things Under the Hood ....
Page 2: Using This Manual
Using this Manual GENERAL MOTORS, GM, the GM Emblem, Many people read the owner manual from beginning to CHEVROLET, the CHEVROLET Emblem, and the end when they ﬁrst receive their new vehicle to learn name KODIAK are registered trademarks of General about the vehicle’s features and controls.
Page 3 Safety Warnings and Symbols A circle with a slash through it is a safety symbol which means “Do There are a number of safety cautions in this book. A Not,” “Do Not do this” box with the word CAUTION is used to tell about things or “Do Not let this happen.”...
Page 4: Vehicle Symbols
Vehicle Damage Warnings Vehicle Symbols You will also ﬁnd notices in this manual. The vehicle has components and labels that use symbols instead of text. Symbols are shown along with Notice: These mean there is something that could the text describing the operation or information damage your vehicle.
Page 5: Seats And Restraint Systems
Section 1 Seats and Restraint Systems Front Seats ............1-2 Securing a Child Restraint in a Rear Outside Bucket Seats ..........1-2 Seat Position (Crew Cab) ......1-40 Split Bench Seat (80/20 Split) ......1-6 Securing a Child Restraint in the Center Rear Air Suspension Seats ........1-6 Seat Position (Crew Cab) ......1-42 Securing a Child Restraint in the Center Front Rear Seats .............1-10...
Page 6: Front Seats
Front Seats Bucket Seats If your vehicle has bucket seats, you can adjust the seats several different ways. Fore-and-Aft Adjustment CAUTION: You can lose control of the vehicle if you try to adjust the seat while the vehicle is moving. You can adjust the seat forward or rearward with the The sudden movement could startle and bar located under the front of the seat cushion.
Page 7: Lumbar Adjustment
Lumbar Adjustment Seatback Adjustment Your seats may have this feature. CAUTION: The lumbar adjustment knob is located on the seatback, on the inboard You can lose control of the vehicle if you try to side of the driver’s seat and adjust a manual driver’s seat while the vehicle on the outboard side of the is moving.
Page 8 To return the seatback to an upright position, do the following: 1. Lift the lever fully without applying pressure to the seatback and the seatback will return to the upright position. 2. Push and pull on the seatback to make sure it is locked.
Page 9 CAUTION: Sitting in a reclined position when your vehicle is in motion can be dangerous. Even if you buckle up, your safety belts cannot do their job when you are reclined like this. The shoulder belt cannot do its job. In a crash, you could go into it, receiving neck or other injuries.
Page 10: Split Bench Seat (80/20 Split)
Split Bench Seat (80/20 Split) Fore-and-Aft Adjustment If your vehicle has a split bench seat, the passenger If your vehicle has this seat is not adjustable. lever it is located underneath the front of the There is a storage area underneath the seat cushion. driver’s seat.
Page 11: Height Adjustment
Height Adjustment If your vehicle has this feature, the seat cushion height adjustment handle is located underneath the front of the seat. To adjust the height of the cushion, lift the handle up Seat Height Adjustment and pull it forward. You can choose between two Lever settings.
Page 12 Lumbar Adjustment Seatback Adjustment Your vehicle has a seatback adjustment control located on the outboard side of the seat. Lumbar Adjustment Knob If your vehicle has a lumbar adjustment knob, it is Recline the seatback by turning the control located on the inboard side of the driver’s seatback, or counterclockwise.
Page 13 Chugger-Snubber Lock-Out Feature CAUTION: If your vehicle has this feature, the handle is Sitting in a reclined position when your vehicle located on the outboard side of the driver’s is in motion can be dangerous. Even if you and passenger’s seats. buckle up, your safety belts cannot do their job when you are reclined like this.
Page 14: Rear Seats
Rear Seats To fold down the seatback, pull this nylon strap located on the rear of the Rear Seat Operation seat, while pulling the seatback down. Folding the Rear Seat (Crew Cab) CAUTION: A safety belt that is improperly routed, not properly attached, or twisted will not provide To raise a seatback, pull the nylon strap while raising the protection needed in a crash.
Page 15: Safety Belts
Safety Belts CAUTION: Safety Belts: They Are for Everyone It is extremely dangerous to ride in a cargo area, This part of the manual tells you how to use safety inside or outside of a vehicle. In a collision, belts properly. It also tells you some things you should people riding in these areas are more likely to not do with safety belts.
Page 16: Why Safety Belts Work
Why Safety Belts Work When you ride in or on anything, you go as fast as it goes. Put someone on it. Take the simplest vehicle. Suppose it is just a seat on wheels. 1-12...
Page 17 Get it up to speed. Then stop the vehicle. The rider The person keeps going until stopped by something. In does not stop. a real vehicle, it could be the windshield... 1-13...
Page 18 or the instrument panel... or the safety belts! With safety belts, you slow down as the vehicle does. You get more time to stop. You stop over more distance, and your strongest bones take the forces. That is why safety belts make such good sense. 1-14...
Page 19 Questions and Answers About Safety If I am a good driver, and I never drive far from Belts home, why should I wear safety belts? You may be an excellent driver, but if you are in a crash — even one that is not your fault — you and Will I be trapped in the vehicle after a crash if I your passenger(s) can be hurt.
Page 20: How To Wear Safety Belts Properly
How to Wear Safety Belts Properly This section is only for people of adult size. Be aware that there are special things to know about safety belts and children. And there are different rules for smaller children and babies. If a child will be riding in your vehicle, see Older Children on page 1-28 or Infants and Young Children on page 1-31.
Page 21 What is wrong with this? CAUTION: You can be seriously hurt if your shoulder belt is too loose. In a crash, you would move forward too much, which could increase injury. The shoulder belt should ﬁt snugly against your body. The shoulder belt is too loose.
Page 22 What is wrong with this? CAUTION: You can be seriously hurt if your lap belt is too loose. In a crash, you could slide under the lap belt and apply force on your abdomen. This could cause serious or even fatal injuries. The lap belt should be worn low and snug on the hips, just touching the thighs.
Page 23 What is wrong with this? CAUTION: You can be seriously injured if your belt is buckled in the wrong place like this. In a crash, the belt would go up over your abdomen. The belt forces would be there, not on the pelvic bones.
Page 24 What is wrong with this? CAUTION: You can be seriously injured if your belt goes over an armrest like this. The belt would be much too high. In a crash, you can slide under the belt. The belt force would then be applied on the abdomen, not on the pelvic bones, and that could cause serious or fatal injuries.
Page 25 What is wrong with this? CAUTION: You can be seriously injured if you wear the shoulder belt under your arm. In a crash, your body would move too far forward, which would increase the chance of head and neck injury. Also, the belt would apply too much force to the ribs, which are not as strong as shoulder bones.
Page 26 What is wrong with this? CAUTION: You can be seriously injured by not wearing the lap-shoulder belt properly. In a crash, you would not be restrained by the shoulder belt. Your body could move too far forward increasing the chance of head and neck injury. You might also slide under the lap belt.
Page 27 What is wrong with this? CAUTION: You can be seriously injured by a twisted belt. In a crash, you would not have the full width of the belt to spread impact forces. If a belt is twisted, make it straight so it can work properly, or ask your dealer/retailer to ﬁx it.
Page 28: Lap-Shoulder Belt
Lap-Shoulder Belt All seating positions in your vehicle have a lap-shoulder belt except for the center front or rear passenger positions, which may have a lap belt. See Lap Belt on page 1-27 for more information. Here is how to wear a lap-shoulder belt properly. 1.
Page 29 5. To make the lap part tight, pull up on the To unlatch the belt, push the button on the buckle. The shoulder belt. belt should go back out of the way. It may be necessary to pull stitching on the safety Before you close a door, be sure the belt is out of the belt through the latch plate to fully tighten the way.
Page 30 Shoulder Belt Height Adjustment Safety Belt Use During Pregnancy Your vehicle has a shoulder belt height adjuster for Safety belts work for everyone, including pregnant each seating position next to a window. women. Like all occupants, they are more likely to be seriously injured if they do not wear safety belts.
Page 31: Lap Belt
Lap Belt This part is only for the lap belt. To learn how to wear a lap-shoulder belt, see Lap-Shoulder Belt on page 1-24. You vehicle may have a center seating position. When you sit in the center front or rear seating position, you may have a lap safety belt, which has no retractor.
Page 32: Child Restraints
Safety Belt Extender Child Restraints If the vehicle’s safety belt will fasten around you, you Older Children should use it. But if a safety belt is not long enough, your dealer/retailer will order you an extender. When you go in to order it, take the heaviest coat you will wear, so the extender will be long enough for you.
Page 33 The manufacturer’s instructions that come with the What is the proper way to wear safety belts? booster seat, state the weight and height limitations for that booster. Use a booster seat with a lap-shoulder An older child should wear a lap-shoulder belt and belt until the child passes the below ﬁt test: get the additional restraint a shoulder belt can provide.
Page 34 CAUTION: CAUTION: Never do this. Never do this. Here two children are wearing the same belt. Here a child is sitting in a seat that has a The belt cannot properly spread the impact lap-shoulder belt, but the shoulder part is forces.
Page 35: Infants And Young Children
CAUTION: Children can be seriously injured or strangled if a shoulder belt is wrapped around their neck and the safety belt continues to tighten. Never leave children unattended in a vehicle and never allow children to play with the safety belts.
Page 36 CAUTION: People should never hold an infant in their arms while riding in a vehicle. An infant does not weigh much — until a crash. During a crash an infant will become so heavy it is not possible to hold it. For example, in a crash at only 25 mph (40 km/h), a 12 lb (5.5 kg) infant will suddenly become a 240 lb (110 kg) force on a person’s arms.
Page 37 CAUTION: Children who are up against, or very close to, any airbag when it inﬂates can be seriously injured or killed. Airbags plus lap-shoulder belts offer protection for adults and older children, but not for young children and infants. Neither the vehicle’s safety belt system nor its airbag system is designed for them.
Page 38 What are the different types of add-on child restraints? CAUTION: Add-on child restraints, which are purchased by the vehicle’s owner, are available in four basic types. Newborn infants need complete support, Selection of a particular restraint should take including support for the head and neck. This into consideration not only the child’s weight, height, is necessary because a newborn infant’s neck and age but also whether or not the restraint will...
Page 39: Child Restraint Systems
Child Restraint Systems CAUTION: A rear-facing infant seat (A) provides restraint The body structure of a young child is quite with the seating surface unlike that of an adult or older child, for whom against the back of the safety belts are designed. A young child’s the infant.
Page 40 A forward-facing child seat (B) provides restraint for the child’s body with the harness. A booster seat (C-D) is a child restraint designed to improve the ﬁt of the vehicle’s safety belt system. A booster seat can also help a child to see out the window.
Page 41: Securing The Child Within The Child Restraint
Securing an Add-on Child Restraint in Keep in mind that an unsecured child restraint can move around in a collision or sudden stop and injure people in the Vehicle the vehicle. Be sure to properly secure any child restraint in your vehicle — even when no child is in it. Securing the Child Within the Child CAUTION: Restraint...
Page 42: Where To Put The Restraint
Where to Put the Restraint If your vehicle is a regular cab model with an air-suspension seat in the right front passenger’s position, there is no place in your vehicle to secure a Accident statistics show that children are safer if they child restraint.
Page 43 When securing a child restraint in a rear seating position, study the instructions that came with your child CAUTION: restraint to make sure it is compatible with this vehicle. Wherever you install a child restraint, be sure to A child in a rear-facing child restraint can be secure the child restraint properly.
Page 44: Lower Anchors And Tethers For Children (Latch)
Lower Anchors and Tethers for anchored. You must use the safety belts to secure your child restraint in this vehicle, unless a national or Children (LATCH) local law requires that the top tether be anchored. Refer to your child restraint instructions and instructions in Some child restraints have a LATCH system.
Page 45 If you need to install more than one child restraint in the rear seat, be sure to read Where to Put the Restraint on page 1-38. 1. Put the child restraint on the seat. 2. Pick up the latch plate, and run the lap and shoulder portions of the vehicle’s safety belt through or around the restraint.
Page 46: Crew Cab
Securing a Child Restraint in the Center Rear Seat Position (Crew Cab) This vehicle does not have top tether anchors. Some national or local laws require that top tethers be anchored. In Canada, the law requires that forward-facing child restraints have a top tether, and that the tether be attached.
Page 47 4. Push the latch plate into the buckle until it clicks. 1. Make the belt as long as possible by tilting the latch Make sure the release button is positioned so you plate and pulling it along the belt. would be able to unbuckle the safety belt quickly if 2.
Page 48: Securing A Child Restraint In The Right Front Seat Position
Securing a Child Restraint in the Securing a Child Restraint in the Center Front Seat Position Right Front Seat Position Your vehicle may have airbags. A rear seat is a safer place to secure a forward-facing child restraint. See CAUTION: Where to Put the Restraint on page 1-38.
Page 49 CAUTION: CAUTION: A child in a rear-facing child restraint can be If the airbag readiness light ever comes on seriously injured or killed if the right front when you have turned off the airbag, it means passenger’s airbag inﬂates. This is because that something may be wrong with the airbag the back of the rear-facing child restraint system.
Page 50 Do not secure a child restraint in a position without a top tether anchor if a national or local law requires that the top tether be anchored, or if the instructions that come with the child restraint say that the top strap must be anchored.
Page 51 5. Pull the rest of the shoulder belt all the way out of 6. To tighten the belt, push down on the child restraint, the retractor to set the lock. pull the shoulder portion of the belt to tighten the lap portion of the belt and feed the shoulder belt back into the retractor.
Page 52: Airbag System
Airbag System If you had turned the airbag off with the switch, remember to be sure to use the airbag off switch to turn on the right front passenger’s airbag when you remove Your vehicle may have the following airbags: the child restraint from the vehicle unless the person •...
Page 53 Here are the most important things to know about the airbag system: CAUTION: CAUTION: Airbags are designed to deploy in moderate to severe frontal and near frontal crashes. They are not designed to inﬂate in rollover, rear You can be severely injured or killed in a crash crashes, or in many side crashes.
Page 54 CAUTION: CAUTION: Airbags inﬂate with great force, faster than the Airbags plus lap-shoulder belts offer the best blink of an eye. Anyone who is up against, or protection for adults, but not for young very close to, any airbag when it inﬂates can children and infants.
Page 55: Where Are The Airbags
Where Are the Airbags? There is an airbag readiness light on the instrument panel cluster, which shows the airbag symbol. The system checks the airbag electrical system for malfunctions. The light tells you if there is an electrical problem. See Airbag Readiness Light on page 3-28 for more information.
Page 56: When Should An Airbag Inﬂate
CAUTION: If something is between an occupant and an airbag, the bag might not inﬂate properly or it might force the object into that person causing severe injury or even death. The path of an inﬂating airbag must be kept clear. Do not put anything between an occupant and an airbag, and do not attach or put anything on the steering wheel hub or on or near any other...
Page 57: What Makes An Airbag Inﬂate
Whether your frontal airbags will or should deploy is not Frontal airbags are not intended to inﬂate during vehicle based on how fast your vehicle is traveling. It depends rollovers, rear impacts, or in many side impacts. largely on what you hit, the direction of the impact, In any particular crash, no one can say whether an and how quickly your vehicle slows down.
Page 58: How Does An Airbag Restrain
How Does an Airbag Restrain? What Will You See After an Airbag Inﬂates? In moderate to severe frontal or near frontal collisions, even belted occupants can contact the steering wheel or After a frontal airbag inﬂates, it quickly deﬂates, so the instrument panel.
Page 59 In many crashes severe enough to inﬂate the airbag, windshields are broken by vehicle deformation. CAUTION: Additional windshield breakage may also occur from the right front passenger airbag. When an airbag inﬂates, there may be dust in • Airbags are designed to inﬂate only once. After an the air.
Page 60 Airbag Off Switch • The infant has a medical condition which, according to the infant’s physician, makes it necessary for the infant to ride in the front seat so that the driver If your vehicle has a right can constantly monitor the child’s condition. front passenger airbag, it has an airbag on-off switch Child Age 1 to 12.
Page 61 Medical Condition. A passenger has a To turn off the right front passenger’s frontal airbag, medical condition which, according to his or insert your ignition key her physician: into the switch, push • in, and move the switch to Causes the passenger airbag to pose a special risk the off position.
Page 62 The airbag off light will come on and stay on to let you To turn the right front know that the right front passenger’s airbag is off. passenger’s airbag on See Airbag Off Light on page 3-29. The airbag off light again, insert your ignition will stay on to remind you that the airbag is off.
Page 63: Servicing Your Airbag-Equipped Vehicle
Servicing Your Airbag-Equipped Adding Equipment to Your Vehicle Airbag-Equipped Vehicle Airbags affect how your vehicle should be serviced. There are parts of the airbag system in several places Is there anything I might add to or change around your vehicle. Your dealer/retailer and the service about the vehicle that could keep the airbags manual have information about servicing your vehicle from working properly?
Page 64: Restraint System Check
Restraint System Check Because I have a disability, I have to get my vehicle modiﬁed. How can I ﬁnd out whether this will affect my airbag system? Checking the Restraint Systems If you have questions, call Customer Assistance. Safety Belts The phone numbers and addresses for Customer Assistance are in Step Two of the Customer Now and then, make sure the safety belt reminder light...
Page 65: Replacing Restraint System Parts After A Crash
Airbags Replacing Restraint System Parts After a Crash The airbag system does not need regularly scheduled maintenance or replacement. Make sure the airbag readiness light is working. See Airbag Readiness Light on page 3-28 for more information. CAUTION: Notice: If an airbag covering is damaged, opened, or broken, the airbag may not work properly.
Page 66 NOTES 1-62...
Page 67: Table Of Contents
Section 2 Features and Controls Keys ...............2-2 Diesel Engine Exhaust Brake ......2-26 Remote Keyless Entry (RKE) System ....2-3 Two-Speed Rear Axle ........2-27 Remote Keyless Entry (RKE) System Automatic Transmission Operation ....2-29 Operation ...........2-4 Manual Transmission Operation ......2-30 Power Take-Off (PTO) ........2-32 Doors and Locks ..........2-6 Four-Wheel Drive ..........2-32 Door Locks ............2-6...
Page 68: Keys
Keys CAUTION: Leaving children in a vehicle with the ignition key is dangerous for many reasons, children or others could be badly injured or even killed. They could operate the power windows or other controls or even make the vehicle move. The windows will function with the keys in the ignition and they could be seriously injured or killed if caught in the path of a closing...
Page 69: Remote Keyless Entry (Rke) System
Remote Keyless Entry (RKE) Changes or modiﬁcations to this system by other than an authorized service facility could void authorization to System use this equipment. At times you may notice a decrease in range. This is If the vehicle has the Remote Keyless Entry (RKE) normal for any RKE system.
Page 70: Battery Replacement
Remote Keyless Entry (RKE) Matching Transmitter(s) to Your Vehicle System Operation Each remote keyless entry transmitter is coded to If your vehicle has this feature, you can lock and unlock prevent another transmitter from unlocking your vehicle. your doors from about 3 feet (1 m) up to 30 feet (9 m) If a transmitter is lost or stolen, a replacement can away using the remote keyless entry transmitter supplied be purchased through your dealer.
Page 71 Notice: When replacing the battery, use care not to 4. Check the operation of the transmitter. If the touch any of the circuitry. Static from your body transmitter does not work after battery replacement, transferred to these surfaces may damage the it may need to be resynchronized to your vehicle.
Page 72: Doors And Locks
Doors and Locks CAUTION: (Continued) Door Locks • Young children who get into unlocked vehicles may be unable to get out. A child can be overcome by extreme heat and can CAUTION: suffer permanent injuries or even death from heat stroke. Always lock your vehicle whenever you leave it.
Page 73: Power Door Locks
Power Door Locks To lock the door from the inside, slide the manual lever on the door down. To If your vehicle has power unlock the door, slide door locks, press the the manual lever up. bottom of the power door lock switch to lock all the doors at once.
Page 74: Windows
Windows CAUTION: Leaving children, helpless adults, or pets in a vehicle with the windows closed is dangerous. They can be overcome by the extreme heat and suffer permanent injuries or even death from heat stroke. Never leave a child, a helpless adult, or a pet alone in a vehicle, especially with the windows closed in warm or hot weather.
Page 75: Power Windows
Power Windows Express-Down The driver’s window has an express-down feature. If your vehicle has power windows, the switches for all This allows the window to be lowered fully without windows are located on the driver’s door. In addition, continuously holding the switch. Press the switch down each passenger door has a switch for their own window.
Page 76: New Vehicle Break-In
Starting and Operating Your • Avoid making hard stops for the ﬁrst 200 miles (322 km) or so. During this time the new brake Vehicle linings are not yet broken in. Hard stops with new linings can mean premature wear and earlier replacement.
Page 77: Ignition Positions
Ignition Positions C (OFF): This position lets you turn off the engine but still turn the steering wheel. It does not lock the steering wheel like LOCK. Use OFF if you must have With your key in the ignition switch, you can turn it to your vehicle in motion while the engine is off.
Page 78: Manual Transmission
Engine Starter Over-Crank Manual Transmission Protection Set the parking brake, shift to NEUTRAL (N) and hold the clutch pedal to the ﬂoor while starting Your vehicle may have an engine starter over-crank the engine. protection system. If the starter motor overheats and Starter Motor Operation shuts off due to over-cranking, the motor must cool down before it will reset and allow starter operation.
Page 79: Starting Your Engine
Starting Your Engine Gasoline Engine Warm-Up 1. Without pushing the accelerator pedal, turn your When you have started your engine, let it run for ignition key to START. When the engine starts, let 20 or 30 seconds to warm up before you put a load on go of the key.
Page 80: Starting The Diesel Engine
Automatic Transmission While your engine is idling and before you turn it off, you can make a list of any operational or handling Move the shift lever to PARK (P) or NEUTRAL (N). The concerns to give to responsible maintenance personnel engine will not start in any other position —...
Page 81 Starting Your Engine Notice: If the wait to start light stays on after starting your vehicle, your vehicle may not run 1. Turn your ignition key to RUN. properly. Have your vehicle serviced right away. Observe the wait to start light. See Wait to Start 3.
Page 82 Cold Weather Starting • If you experience longer cranking times, notice an unusual amount of exhaust smoke or are at ® If your vehicle has the 6.6L DURAMAX Diesel Engine higher altitudes (over 7,000 ft. or 2 135 m), you may and the Isuzu 6H Diesel Engine, the following notice use your optional engine coolant block heater.
Page 83 Stopping the Diesel Engine Also, remember that an automatic transmission adds heat to the cooling system through the heat exchanger in 1. Apply the parking brake. See Parking Brake (With the radiator. Because of this, vehicles equipped with Hydraulic Brakes) on page 2-38 or Parking Brake automatic transmissions are often able to retain engine (With Air Brakes) on page 2-41 for parking coolant heat better than manual transmission vehicles.
Page 84: Engine Alarm And Automatic Shutdown
Engine Alarm and Automatic If the light does not come on when the engine is cold, your vehicle needs service. Shutdown If your batteries do not have enough charge to start your engine, see Battery on page 5-66. Your check gages warning light will come on if the system senses high engine temperature, and a low or Be sure you have the right oil for your engine, and that high engine oil pressure.
Page 85: Idle Shutdown
Idle Shutdown Pull off the road and shut off the engine. Do not start it until the reason for the problem is known, and the problem is ﬁxed. If the engine shuts down when you are If your vehicle has a diesel engine it could have an still in traffic, you can restart the engine and get another engine idle shutdown feature.
Page 86: High Idle System
The engine will not go into idle shutdown mode if: After the engine shutdown occurs, the engine is no longer running, and the ignition is still in the ON/RUN • The Power Take-Off (PTO) equipment is operating. position, all accessories can be used. Turn the ignition See Power Take-Off (PTO) on page 2-32 for more switch to START to restart the engine or turn it to information.
Page 87 This system can be used to increase your engine idle To set a new temporary engine idle speed do the speed whenever the following conditions are met: following: • The brake pedal is not pressed. 1. Make sure all of the previously described conditions •...
Page 88: Exhaust Restrictor (Engine Warm-Up)
Exhaust Restrictor (Engine For all engines this feature is already turned on. The ® automatic quick warm-up on the DURAMAX engine Warm-Up) can be turned off and on by doing the following procedure: Exhaust Restrictor 1. Turn the ignition to RUN, with the vehicle off. If your vehicle has a Isuzu 6H Diesel Engine, it may 2.
Page 89: Engine Checks Before Operating
Engine Checks Before Operating The engine idle speed will return to normal once the following conditions are met: When you have started your engine, let it run for • Once engine coolant temperature reaches about 20 to 30 seconds before you put a load on the 150°F (65°C).
Page 90 • During this warm-up period, check your warning lights The charging system light should come on when the and gages: ignition key is turned to ON/RUN or START and should go out when the engine is running above idle. • If oil pressure does not begin to rise within If the light does not go out or comes back on during 15 seconds of starting, stop the engine and ﬁnd the...
Page 91: Engine Coolant Heater
Engine Coolant Heater CAUTION: The engine coolant heater, if available, can help in cold weather conditions at or below 0°F (−18°C) for easier starting and better fuel economy during engine warm-up. Plugging the cord into an ungrounded outlet Plug in the coolant heater at least four hours before could cause an electrical shock.
Page 92: Diesel Engine Exhaust Brake
Diesel Engine Exhaust Brake While using the exhaust brake, the proper gear range selection is important. The exhaust brake is most effective if the gear range selected is the lowest possible If your vehicle has a Isuzu 6H Diesel Engine, it may range that does not allow the engine rpm to go more have an exhaust brake, which is located in the exhaust than 200 rpm above rated (full load) rpm.
Page 93: Two-Speed Rear Axle
Two-Speed Rear Axle Two-Speed Rear Axle Shift Control Operation The Two-Speed rear axle lets the driver select Low Range and High Range. Low Range provides good The rear axle shift control starting torque and pulling power. When selecting High switch for automatic and Range the axle allows for higher road speed and manual transmissions fuel economy.
Page 94 Shifting Split Upshift (Manual Transmissions Only) Upshifting the Axle To downshift the axle with a transmission upshift: To shift from Low to High Range: 1. Push the clutch. 1. Press the bottom of the switch to shift the axle control from Low to High. 2.
Page 95: Automatic Transmission Operation
Automatic Transmission Operation CAUTION: ® Your vehicle has either an Allison ﬁve-speed or six-speed automatic transmission. This part of the manual covers the basics of these. With these It can be dangerous to get out of your vehicle ® transmissions, you will ﬁnd another Allison manual in without the parking brake ﬁrmly set.
Page 96: Manual Transmission Operation
Overdrive Defeat the clutch. It is important not to increase the engine speed sooner or before the clutch begins its engagement. If you If your vehicle has this feature, you can select not to do, you can cause damage to your vehicle. shift up to ﬁfth gear.
Page 97 ® ® Eaton Fuller Nine and Ten-Speed Clutch Brake (Vehicles with Non-Synchronized Manual Non-Synchronized Transmission) Transmissions A clutch brake is used to stop transmission input shaft rotation so that FIRST (1) or REVERSE (R) gear If your vehicle has one of these transmissions the selection can be initiated when the vehicle is at a engine rpm and road speed must match when upshifting standstill and the engine is idling.
Page 98: Power Take-Off (Pto)
Power Take-Off (PTO) Four-Wheel Drive If your vehicle has four-wheel drive, you can send the Your vehicle may have engine’s driving power to all four wheels for extra power take-off (PTO). The traction. To get the most satisfaction out of four-wheel PTO switch is located drive, you must be familiar with its operation.
Page 99 Locking Hubs If your vehicle has four-wheel drive, the transfer case knob is located to the right of the steering wheel on the instrument panel. Use this knob to shift into and out of four-wheel drive. An indicator light shows you which position the transfer Hublock Dial Location Hublock Dial case is in.
Page 100 Recommended Transfer Case Settings (Four-Wheel High): Use Four-Wheel High when you need extra traction, such as on snowy or icy Transfer Case Settings Driving Conditions roads or in most off-road situations. Be sure the front wheel hubs are locked when you want to drive in Four-Wheel High.
Page 101 ® Shifting Into Four-Wheel Low Notice: If your vehicle has an Allison transmission and you try to put the transmission in PARK (P) To shift to Four-Wheel Low, the vehicle’s engine must while the transfer case is in Four-Wheel Low, be running and the vehicle must be stopped or the transmission might not go into PARK (P) and moving less than 3 mph (5 km/h) with the transmission...
Page 102 Shifting Out of Four-Wheel Low Shifting Into NEUTRAL To shift from Four-Wheel Low to Four-Wheel High or Before shifting the transfer case to NEUTRAL, ﬁrst Two-Wheel High, your vehicle must be stopped or make sure the vehicle is parked so that it will not roll. moving less than 3 mph (5 km/h) with the transmission in 1.
Page 103: Parking
Shifting Out of NEUTRAL 7. Release the parking brake. 8. Start the engine and shift the transmission lever to To shift the transfer case out of NEUTRAL, do the the desired position. following: Excessively shifting the transfer case into or out of the 1.
Page 104: Parking Brake (With Hydraulic Brakes)
Parking a Vehicle With the Two-Speed Parking Brake (With Hydraulic Rear Axle Brakes) 1. With the engine running, shift the two-speed If your vehicle has hydraulic brakes, it has either a rear axle into low. To be sure it is in low, parking brake foot pedal or hand lever.
Page 105 To set the foot pedal parking brake, hold the regular If the ignition is on when the parking brake is set, the brake pedal down with your right foot. Push down brake system warning light will come on. the parking brake pedal with your left foot. Once the parking brake is applied, slowly remove your foot from the regular brake pedal, while checking to see if the vehicle moves.
Page 106 Parking Brake Adjustment (Hand Lever System Only) Make sure the parking brake burnish procedure has been previously followed before continuing with any park brake adjustment. See Parking Brake Burnish Procedure on page 2-43 for more information. Parking brake adjustment may be necessary after the burnish procedure or at the scheduled maintenance intervals.
Page 107: Parking Brake (With Air Brakes)
Parking Brake (With Air Brakes) 4. Check to see if the vehicle moves by slowly removing your foot from the regular brake pedal. 5. If the vehicle moves, press the regular brake and If your vehicle has air repeat the adjustment procedure. brakes, you will have this parking brake.
Page 108 Vehicles built for use as tractors or towing vehicles have To charge a trailer’s air brake system do the following: two air brake controls. They look like this: 1. Move your vehicle into the proper position. 2. Apply the parking brake by pulling the yellow parking brake knob out.
Page 109: Parking Brake Burnish Procedure
Parking Brake Burnish Procedure CAUTION: All vehicles which have hydraulic brakes have a parking brake. It is recommended that the parking brake be burnished as part of the new vehicle break-in. The If you apply any one of the air brake parking parking brake will work best after it has been burnished controls while the vehicle is moving, your rig following these instructions:...
Page 110: Air Suspension
Air Suspension Press the bottom of the switch to deﬂate the air suspension and lower the deck height. Press the top of the switch to return the suspension to normal Your vehicle may have the Hendrickson HAS Series deck height. single-axle air suspension which is designed for a single-axle on-highway use.
Page 111: Engine Exhaust
Engine Exhaust CAUTION: (Continued) • CAUTION: Your vehicle was damaged when driving over high points on the road or over road debris. Engine exhaust can kill. It contains the gas • Repairs were not done correctly. carbon monoxide (CO), which you cannot see •...
Page 112: Diesel Particulate Filter (Diesel Engine)
Diesel Particulate Filter (Diesel The DPF will regenerate (self-clean) itself as part of normal operation. During regeneration, the green DPF Engine) indicator is lit and you will notice a difference in engine noise and engine speed, but this is normal. The Your vehicle has a Diesel Particulate Filter (DPF) as Engine Control Module (ECM) controls this function part of the exhaust system to reduce vehicle emissions.
Page 113 During regeneration, the green DPF indicator light CAUTION: will come on. See Diesel Particulate Filter Warning Light on During DPF regeneration, the exhaust system page 3-45. and exhaust gases are very hot. Things that burn could touch hot exhaust parts under your vehicle and ignite.
Page 114 For vehicles with Power Take-Off (PTO), monitor the If the yellow or red DPF indicator is on, you can clean instrument panel cluster for lights related to the DPF. the DPF by performing a manual regeneration. All engines consume some amount of engine oil. This is When it is safe to do so, stop the vehicle.
Page 115 4. Fully set the parking brake. Under certain operating conditions, manual regeneration might not be able to be performed, even if the soot 5. Shift the transmission to PARK (P) or level in the DPF requires regeneration. This can occur NEUTRAL (N).
Page 116: Running The Vehicle While Parked
Running the Vehicle While Parked CAUTION: It is better not to park with the engine running. But if you ever have to, here are some things to know. It can be dangerous to get out of your vehicle if the automatic transmission shift lever is not CAUTION: fully in PARK (P) with the parking brake ﬁrmly set.
Page 117: Mirrors
Mirrors Outside Power Mirrors If you have outside power mirrors, they can be adjusted Manual Rearview Mirror from the inside of the vehicle. When you are sitting in a comfortable driving position, The control for this adjust the mirror so you can see clearly behind your feature is located on the vehicle.
Page 118: Outside Convex Mirrors
Outside Convex Mirrors Outside Heated Mirrors If your vehicle has this feature, your outside rearview mirrors can be defrosted. CAUTION: The switch for this feature is located in the instrument A convex mirror can make things (like other panel switchbank. vehicles) look farther away than they really are.
Page 119: Storage Areas
Storage Areas Center Console Storage Your vehicle may have a center console compartment. Your vehicle includes a number of storage compartments. The back of your center bench seat may also fold forward to reveal a console compartment. Some vehicles have storage areas in the instrument panel.
Page 120 NOTES 2-54...
Page 121 Section 3 Instrument Panel Instrument Panel Overview .......3-4 Warning Lights, Gages, and Indicators ....3-24 Hazard Warning Flashers ........3-6 Instrument Panel Cluster ........3-25 Other Warning Devices ........3-6 Speedometer and Odometer ......3-26 Horn .............3-6 Trip Odometer ..........3-26 Tilt Wheel .............3-7 Tachometer ..........3-26 Turn Signal/Multifunction Lever ......3-7 Engine Speed Limiter ........3-27 Turn and Lane-Change Signals ......3-8...
Page 122 Section 3 Instrument Panel Exhaust Brake Indicator Light ......3-40 Diesel Particulate Filter Warning Light ....3-45 Differential Lock Indicator Light .......3-40 Air Filter Restriction Indicator ......3-45 Reduced Engine Power Light ......3-41 Air Pressure Gage ........3-46 Highbeam On Light ........3-41 Hourmeter Gage ...........3-46 Daytime Running Lamps (DRL) Indicator Audio System(s) ..........3-47 Light ............3-41...
Page 123 NOTES...
Page 124: Instrument Panel Overview
Instrument Panel Overview Automatic Transmission Shown, Manual Transmission Similar.
Page 125 A. Air Outlets. See Outlet Adjustment on page 3-23. H. Turn Signal/Multifunction Lever. See Turn Signal/Multifunction Lever on page 3-7. B. Instrument Panel Cluster. See Instrument Panel Cluster on page 3-25. I. Hazard Warning Flashers Button. See Hazard Warning Flashers on page 3-6. C.
Page 126: Hazard Warning Flashers
Hazard Warning Flashers Other Warning Devices The hazard warning ﬂashers warn others. They also let If you carry reﬂective triangles, you can set them up at the police and other emergency vehicles know you the side of the road about 300 feet (100 m) behind have a problem.
Page 127: Tilt Wheel
Tilt Wheel Turn Signal/Multifunction Lever A tilt wheel allows you to adjust the steering wheel before you drive. You can raise it to the highest level to give your legs more room when you exit and enter the vehicle. The lever that allows you to tilt the steering wheel is located on the left side of the steering column.
Page 128: Turn And Lane-Change Signals
Turn and Lane-Change Signals As you signal a turn or a lane change, if the arrows don’t ﬂash but just stay on, check the turn signal ﬂasher and circuit breaker. See Fuses and Circuit Breakers The turn signal has two upward (for right) and two on page 5-103.
Page 129: Windshield Wipers
Windshield Wipers For steady wiping at low speed, turn the band toward you to the ﬁrst solid band below the delay settings. You control the windshield For high-speed wiping, turn the band farther, to the wipers by turning the band last solid band below the delay settings.
Page 130: Windshield Washer
Windshield Washer Cruise Control If your vehicle has (Washer Fluid): There is a paddle marked with the this feature, it is located at windshield washer symbol at the top of the multifunction the end of the multifunction lever. To spray washer ﬂuid on the windshield, press lever.
Page 131: Setting Cruise Control
Setting Cruise Control With cruise control, you can maintain a speed of about 25 mph (40 km/h) or more without keeping your foot on the accelerator. Cruise control does not work at speeds below about 25 mph (40 km/h). CAUTION: If you have an automatic transmission and you apply your brakes, the cruise control will shut off.
Page 132: Resuming A Set Speed
Resuming a Set Speed Increasing Speed While Using Cruise Control Suppose you set your cruise control at a desired speed and then you apply the brake. This, of course, shuts There are two ways to go to a higher speed: off the cruise control.
Page 133 Passing Another Vehicle While Using Ending Cruise Control Cruise Control There are four different ways to turn off the cruise control: Use the accelerator pedal to increase your speed. • When you take your foot off the pedal, your vehicle will Step lightly on the brake pedal slow down to the cruise control speed you set earlier.
Page 134: Exterior Lamps
Exterior Lamps (Parking Lamps): Turning the control to this position turns on the parking lamps, together with the following: • Marker Lamps • Taillamps • License Plate Lamps • Instrument Panel Lights (Headlamps): Turning the control to this position turns on the headlamps, together with the previously listed lamps and lights.
Page 135: Headlamps On Reminder
Headlamps on Reminder When the DRL are on, only the headlamps will be on. The taillamps, sidemarker and other lamps will not be on. Your instrument panel will not be lit up either. If you have this system, a tone will sound when your headlamps and/or parking lamps are turned on and your When it gets dark, the ignition is in LOCK or ACCESSORY.
Page 136: Marker Lamps
Marker Lamps Instrument Panel Brightness If your vehicle has this feature, you can manually blink This feature controls the brightness of the instrument the marker and clearance lamps. panel lights. The thumbwheel for this feature is located to the right of The marker lamp defeat the exterior lamp control.
Page 137: Entry Lighting
You can use the dome override button to set the dome If the dome override button is pushed in, the dome lamps to automatically come on when a door is lamps will not come on. Use this feature when you want open, or to remain off.
Page 138: Instrument Panel Switchbank
Instrument Panel Switchbank This switchbank is located in the center of the instrument panel. (Marker Lamp Defeat Switch): See Marker Lamps on page 3-16. (Power Take Off/Manual High Idle Switch): See Power Take-Off (PTO) on page 2-32 and High Idle System on page 2-20. (Traction Control Switch): See Traction Control System (TCS) on page 4-8.
Page 139: Accessory Power Outlet(S)
Certain electrical accessories may not be compatible (Differential Lock Control Switch): See Rear with the accessory power outlet and could result Axle Differential Lock Control on page 4-7. in blown vehicle or adapter fuses. If you experience a (Airbag On/Off Switch): See Airbag Off Switch on problem, see your dealer for additional information on accessory power outlets.
Page 140: Ashtray(S) And Cigarette Lighter
Ashtray(s) and Cigarette Lighter Climate Controls Your vehicle may have an ashtray and a cigarette lighter Climate Control System located in the center ﬂoor console. To open the removable ashtray, ﬂip open the top. With these systems, you can control the heating, Notice: If you put papers, pins, or other ﬂammable cooling, and ventilation for your vehicle.
Page 141 Temperature Knob: Turn the middle knob located If your vehicle has air conditioning, the controls will look clockwise or counterclockwise to increase or decrease like this: the temperature inside of your vehicle. Turn the knob toward the red area for warmer air. Turn the knob toward the blue area for cooler air.
Page 142: Defogging And Defrosting
Turn the mode knob on the right of the climate control (Bi-Level Air Conditioning): This setting divides panel to select the defog or defrost mode. airﬂow between the ﬂoor vents and instrument panel vents. The air conditioning compressor will cycle (Defog): With this setting, the outside air comes out continuously in this setting as long as the outside of both the ﬂoor and defroster outlets.
Page 143: Outlet Adjustment
Rear Window Defogger Outlet Adjustment For vehicles with a rear window defogger, a warming Your vehicle has air outlets on the instrument panel that grid is used to remove fog or frost from the rear window. allow you to adjust the direction and amount of airﬂow inside the vehicle.
Page 144: Rear Heating System
Rear Heating System Warning Lights, Gages, and Indicators If you have a crew cab and your vehicle has This part describes the warning lights and gages that may a rear heater, be on your vehicle. The pictures will help you locate them. the thumbwheel for this feature is located Warning lights and gages can signal that something is...
Page 145: Instrument Panel Cluster
Instrument Panel Cluster The instrument panel cluster is designed to let you know at a glance how your vehicle is running. You will know how fast you are going, about how much fuel is left and many other things you will need to drive safely and economically. Isuzu 6H Diesel Engine shown, 6.6L &...
Page 146: Speedometer And Odometer
Speedometer and Odometer Tachometer Your speedometer lets you see your speed in both miles per hour (mph) and kilometers per hour (km/h). Your odometer shows how far your vehicle has been driven, in either miles (used in the United States) or kilometers (used in Canada).
Page 147: Engine Speed Limiter
Engine Speed Limiter Safety Belt Reminders All engines have electronic engine speed limiting. Safety Belt Reminder Light The engine limited speeds range between 2,900 and 4,400 rpm depending on engine option When the engine is started, a light will come on for content.
Page 148: Airbag Readiness Light
Airbag Readiness Light The airbag readiness light should ﬂash for a few seconds when you turn the ignition key to RUN or START. If the light doesn’t come on then, have it ﬁxed If your vehicle has airbags, there is an airbag readiness so it will be ready to warn you if there is a problem.
Page 149: Airbag Off Light
Airbag Off Light CAUTION: If your vehicle has an airbag on-off switch, it also has a passenger airbag status indicator located in the instrument panel. If the right front passenger’s airbag is turned off for a person who is not in a risk group identiﬁed When you manually turn the right front passenger’s airbag off using the airbag on-off switch on the by the national government, that person will not...
Page 150: Charging System Light
Charging System Light CAUTION: The charging system light may be located in the instrument panel cluster, or If the airbag readiness light ever comes on with the auxiliary warning when you have turned off the airbag, it means lights in the center of that something may be wrong with the airbag the instrument panel.
Page 151: Voltmeter Gage
Voltmeter Gage Service Transmission Warning Light ® If your vehicle has an Allison automatic transmission, When your engine is certain transmission malfunctions will turn this light on. running, the voltmeter gage shows the charging This light is located with system voltage. the auxiliary warning lights in the center of the instrument panel.
Page 152: Range Inhibit Warning Indicator
Range Inhibit Warning Indicator Brake System Warning Light Your vehicle has either hydraulic or air brakes. If your vehicle has an Allison 1000/2200/2300/2500 series Each system has different warning lights. automatic transmission, a lighted bar under the current gear selected will ﬂash. Hydraulic Brake System Warning Lights If your vehicle has an Allison 3000/3500 series Vehicles with hydraulic brake systems have two brake...
Page 153 Parking Brake Warning Light When the warning light comes on while you are driving, you should drive only as far as the nearest point of Your vehicle has a brake warning light. When the safety and then stop the vehicle. Here is a very ignition is on, this light will come on when you set your important thing for you to know: parking brake.
Page 154: Anti-Lock Brake System (Abs) Warning Light
Anti-lock Brake System (ABS) Trailer Antilock Brake System Warning Light Warning Light This light will come on If your vehicle is connected brieﬂy when you start the to a trailer with antilock engine, then it will turn brakes, this light should off.
Page 155: Engine Coolant Temperature Gage
Engine Coolant Temperature Gage Low Coolant Warning Light This gage shows the Your vehicle has a low engine coolant coolant warning light. temperature. If the gage If this light comes on, the pointer moves into the system is low on coolant red area, your engine and the engine may coolant might have...
Page 156: Driving Your Vehicle
Wait to Start Indicator Malfunction Indicator Lamp ® If your vehicle has the DURAMAX 6.6L diesel engine, Service Engine Soon Light it will have glow plugs and an air intake heater. If your vehicle has the Isuzu 6H diesel engine, it will If this light comes on or have glow plugs and an inlet heater.
Page 157: Maintenance Schedule
Oil Pressure Gage A reading in the low pressure zone may be caused by a dangerously low oil level or other problem. ® If you have a Caterpillar diesel engine, also see your The engine oil pressure ® Caterpillar Operation & Maintenance Manual. gage, on the lower right portion of your instrument panel cluster, shows...
Page 158: Maintenance Schedule
Low Oil Level Light Change Engine Oil Light Your vehicle may have a The change engine oil light low oil level light. should come on brieﬂy as a bulb check when you start the engine. If the light does not come on, have it serviced.
Page 159: Engine Overspeed Warning Light
Engine Overspeed Warning Light Transmission Temperature Gage If your vehicle has this If you have an automatic light, it will come on if your transmission and this engine is operating at gage, it is located too many revolutions per above the switchbank minute (rpm).
Page 160: Exhaust Brake Indicator Light
Exhaust Brake Indicator Light Differential Lock Indicator Light For vehicles with an If your vehicle has this exhaust brake, this light is feature, this light is located above the located in the center of climate controls. the instrument panel. The light is on when the rear differential lock system is in use.
Page 161: Reduced Engine Power Light
Reduced Engine Power Light Highbeam On Light If the check engine and This light comes on when reduced engine power the high-beam headlamps lights are on, the electronic are in use. throttle control may be disabled. A noticeable change in the vehicle’s performance may See Headlamp High/Low-Beam Changer on page 3-8 also occur.
Page 162: Low Washer Fluid Warning Light
Low Washer Fluid Warning Light Check Gages Warning Light This light is located above This light will come on the climate controls in the brieﬂy when the engine is center of the instrument started. panel. This light will come on when your vehicle is low on If this light comes on and stays on while you are driving.
Page 163: Fuel Gage
Fuel Gage Here are four concerns of some operators. None of these shows a problem with your fuel gage: Your fuel gage is located • The gage moves a little when you turn a corner or on the right side of your speed up.
Page 164: Water In Fuel Warning Light
Water in Fuel Warning Light Change Fuel Filter Warning Light This light is located above For vehicles with this light, the climate controls in the it is located in the center of center of the instrument the instrument panel. panel. ®...
Page 165: Diesel Particulate Filter Warning Light
Diesel Particulate Filter Air Filter Restriction Indicator Warning Light If your vehicle has this feature, the gage is Your vehicle may have located above the two Diesel Particulate switchbank in the center Filter (DPF) Warning lights. of the instrument panel. It monitors the engine air ﬁlter.
Page 166: Air Pressure Gage
Air Pressure Gage Hourmeter Gage To access the engine hourmeter gage, press the trip If your vehicle has air odometer button three times. brakes, the air pressure gage is located above the The instrument panel cluster displays the accumulated switchbank in the center engine run time hours using the reconﬁgurable of the instrument panel.
Page 167: Audio System(S)
Audio System(s) While your vehicle is parked: • Familiarize yourself with all of its controls. If your vehicle came without a radio, the wiring • Familiarize yourself with its operation. provisions for a radio and an antenna were installed at •...
Page 168: Setting The Clock
Setting the Clock Press and hold the HR (down) or MIN (up) arrow for two seconds. Then press HR until the correct hour displays. Press and hold MIN until the correct minute displays. The time can be set with the ignition on or off. Radio(s) Radio with Cassette Your vehicle has one of these radios as its radio system.
Page 169: Finding A Station
Finding a Station Setting Preset Stations Up to 18 stations (six FM1, six FM2, and six AM), AM FM: Press to switch between FM1, FM2, and AM. can be programmed on the six numbered pushbuttons, The selection displays. by performing the following steps: TUNE: Turn to select radio stations.
Page 170: Adjusting The Speakers (Balance/Fade
Setting the Tone (Bass/Treble) Adjusting the Speakers (Balance/Fade) AUDIO: To adjust the bass or the treble, press and AUDIO: To adjust the balance between the right release the AUDIO button until BAS (bass) or TRE and the left speakers, press and release the AUDIO button until BAL (balance) displays.
Page 171: Radio Messages
Radio Messages As each new track starts to play, the track number displays. CAL (Calibration): The audio system has been The CD player can play the smaller 3 inch (8 cm) calibrated for your vehicle from the factory. If CAL single CDs with an adapter ring.
Page 172: Care Of Your Cd Player
Care of Your CD Player 1 PREV (Previous): Press to go to the beginning of the current track if more than eight seconds have played. Do not add any label to a CD, it could get caught in the The track number displays. If this pushbutton is held or CD player.
Page 173 CD Messages 6 RPT (Repeat): Press once to hear a track over again. RPT displays. The current track continues to If the CD comes out, it could be for one of the repeat. Press again to turn off repeat play. OFF displays. following reasons: SEEK : Press the left or right arrow to go to...
Page 174: Playing A Cassette Tape
Playing a Cassette Tape Cassette tape adapter kits for portable CD players works in the cassette tape player. See “CD Adapter Kits” The tape player is built to work best with tapes that are later for more information. up to 30 to 45 minutes long on each side. Tapes The tape bias is set automatically when a metal or longer than that are so thin they might not work well in chrome tape is inserted.
Page 175 2 NEXT: The tape must have at least three seconds of 6 RPT (Repeat): The tape must have at least three silence between each selection for next to work. seconds of silence between each selection for repeat to Press this pushbutton to go to the next selection on the work.
Page 176: Care Of The Cassette Tape Player
Care of the Cassette Tape Player The cut tape detection feature of the cassette tape player may identify the cleaning cassette as a damaged A tape player that is not cleaned regularly can cause tape. To prevent the cleaning cassette from being reduced sound quality, ruined cassettes, or a damaged ejected, use the following steps: mechanism.
Page 177: Theft-Deterrent Feature
CD Adapter Kits After the player is cleaned, press and hold the eject button for three seconds to reset the CLN indicator. It is possible to use a portable CD player adapter kit The radio will display --- to show the indicator was reset. with the cassette tape player after deactivating the Cassettes are subject to wear and the sound quality tight/loose tape sensor feature on the tape player.
Page 178: Radio Reception
Radio Reception Fixed Mast Antenna Frequency interference and static can occur during The ﬁxed mast antenna can withstand most car washes normal radio reception if items such as cell phone without being damaged. If the mast should ever chargers, vehicle convenience accessories, and external become slightly bent, straighten it out by hand.
Page 179 Section 4 Driving Your Vehicle Your Driving, the Road, and Your Vehicle ..4-2 Driving at Night ..........4-13 Defensive Driving ...........4-2 Driving in Rain and on Wet Roads ....4-14 Drunk Driving ..........4-3 Highway Hypnosis ........4-15 Control of a Vehicle ........4-3 Hill and Mountain Roads ........4-15 Braking ............4-4 Winter Driving ..........4-16 Hydraulic Brake Systems .........4-4...
Page 180: Your Driving, The Road, And Your Vehicle
Your Driving, the Road, and CAUTION: Your Vehicle Assume that other road users (pedestrians, Defensive Driving bicyclists, and other drivers) are going to be careless and make mistakes. Anticipate what Defensive driving means “always expect the they might do and be ready. In addition: unexpected.”...
Page 181: Drunk Driving
Drunk Driving 17,000 annual motor vehicle-related deaths have been associated with the use of alcohol, with about 250,000 people injured. For persons under 21, it is against the law in every CAUTION: U.S. state to drink alcohol. There are good medical, psychological, and developmental reasons for Drinking and then driving is very dangerous.
Page 182: Braking
Braking faster if you do a lot of heavy braking. If you keep pace with the traffic and allow realistic following distances, you will eliminate a lot of unnecessary braking. See Brake System Warning Light on page 3-32. That means better braking and longer brake life. Braking action involves perception time and reaction If your vehicle’s engine ever stops while you are driving, time.
Page 183: Antilock Brake System (Abs)
Antilock Brake System (ABS) ABS can change the brake pressure faster than any driver could. The computer is programmed to make the most of available tire and road conditions. This can Your vehicle has the Antilock Brake System (ABS), an help you steer around the obstacle while braking hard.
Page 184: Trailer Brake Hand Control Valve
Trailer Brake Hand Control Valve CAUTION: If your vehicle has this feature, the control is mounted on the ﬂoor console. Using the trailer brake hand control for parking This feature lets you apply or for holding the vehicle on a hill may not the trailer brakes without keep the vehicle from rolling.
Page 185: Rear Axle Differential Lock Control
Rear Axle Differential Lock Control Notice: Turning on the inter-axle differential lock while the rear wheels are spinning freely, as they might on snow or ice, can damage the axle(s). If your vehicle has a Turn on this control only while the wheels are controlled traction or not spinning freely.
Page 186: Traction Control System (Tcs)
Traction Control System (TCS) The traction control system automatically comes on whenever you start your vehicle. To limit wheel spin, especially in slippery road conditions, you should always Your vehicle may have a traction control system that leave the system on. But you can turn the traction control limits wheel spin.
Page 187: Steering
Adding non-dealer/non-retailer accessories can affect The traction you can get in a curve depends on the your vehicle’s performance. See Accessories and condition of the tires and the road surface, the angle Modiﬁcations on page 5-4 for more information. at which the curve is banked, and your speed. While you are in a curve, speed is the one factor you can control.
Page 188: Steering In Emergencies
Steering in Emergencies There are times when steering can be more effective than braking. For example, you come over a hill and ﬁnd a truck stopped in your lane, or a car suddenly pulls out from nowhere, or a child darts out from between parked cars and stops right in front of you.
Page 189: Off-Road Recovery
Off-Road Recovery Passing You may ﬁnd that your right wheels have dropped off Passing another vehicle on a two-lane road can be the edge of a road onto the shoulder while you are dangerous. To reduce the risk of danger while passing, driving.
Page 190: Loss Of Control
Loss of Control A cornering skid is best handled by easing your foot off the accelerator pedal. Let us review what driving experts say about what If you have the Traction Control System (TCS), happens when the three control systems — brakes, remember: It helps avoid only the acceleration skid.
Page 191: Driving At Night
• If you have the Antilock Brake System (ABS), Slow down and keep more space between you and remember: It helps avoid only the braking skid. If you do other vehicles because your headlamps can only not have ABS, then in a braking skid, where the light up so much road ahead.
Page 192: Driving In Rain And On Wet Roads
Driving in Rain and on Wet Roads Hydroplaning Hydroplaning is dangerous. Water can build up under Rain and wet roads can reduce vehicle traction your vehicle’s tires so they actually ride on the and affect your ability to stop and accelerate. Always water.
Page 193: Highway Hypnosis
Highway Hypnosis CAUTION: Always be alert and pay attention to your surroundings while driving. If you become tired or sleepy, ﬁnd a safe place to park your vehicle and rest. If you do not shift down, the brakes could get so hot that they would not work well.
Page 194: Winter Driving
• Driving on Snow or Ice Stay in your own lane. Do not swing wide or cut across the center of the road. Drive at speeds Most of the time, those places where the tires meet the that let you stay in your own lane. road probably have good traction.
Page 195 If your vehicle has the Traction Control System (TCS), it Remember, unless your vehicle has ABS, if you brake improves your ability to accelerate when driving on a so hard that the wheels stop rolling, you will just slippery road. But you can turn the TCS off if you ever slide.
Page 196: If You Are Caught In A Blizzard
If You Are Caught in a Blizzard CAUTION: If you are stopped by heavy snow, you could be in a serious situation. You should probably stay with your vehicle unless you know for sure that you are near Snow can trap exhaust gases under your help and you can hike through the snow.
Page 197: If Your Vehicle Is Stuck In Sand, Mud, Ice, Or Snow
If Your Vehicle is Stuck in Sand, Run your engine only as long as you must. This saves fuel. When you run the engine, make it go a little Mud, Ice, or Snow faster than just idle. That is, push the accelerator slightly.
Page 198: Rocking Your Vehicle To Get It Out
Rocking Your Vehicle to Get It Out Tow Hooks First, turn the steering wheel left and right to clear the area around the front wheels. For four-wheel-drive CAUTION: vehicles, shift into 4HI. See Four-Wheel Drive on page 2-32. Turn off any traction system. See Traction Control System (TCS) on page 4-8.
Page 199: Loading Your Vehicle
Loading Your Vehicle If your vehicle has tow hooks, the hooks are at the front and, on some models, the rear of the vehicle. You may need to use them if you are stuck off-road and need It is the responsibility of the Final Stage manufacturer to to be pulled to some place where you can continue install a Certiﬁcation label on your vehicle.
Page 200 Never exceed the GVWR for your vehicle, or the GAWR If you put things inside your vehicle — like suitcases, for either the front or rear axle. tools, packages, or anything else — they go as fast as the vehicle goes. If you have to stop or turn quickly, And, if you do have a heavy load, spread it out.
Page 201: Adding A Snow Plow Or Similar Equipment
Adding a Snow Plow or Similar CAUTION: Equipment If you will be installing a snow plow on your vehicle, we On some vehicles that have certain front recommend that the vehicle have the snow plow mounted equipment, such as a snow plow, it prep package (RPO ANQ).
Page 202: Towing
Towing 1. Block the wheels of the vehicle. Towing Your Vehicle Consult your dealer/retailer or a professional towing service if you need to have your disabled vehicle towed. See Roadside Assistance Program on page 7-5. Releasing Air-Operated Parking Brakes If your vehicle has air brakes, you could have a special towing problem.
Page 203 3. Remove the rubber 6. Turn the stud nut cap from the rear of clockwise several turns the chamber. to release the brakes. Follow the same procedure to release the other brake or brakes. 4. Put the release stud, nut and ﬂat washer into the 7.
Page 204: Electrical Connections
Trailer Connections Trailer Connections (C7/C8 Models Only) Heavy-Duty Trailer Wiring Package If your vehicle has these trailer connections, they are Your vehicle may be equipped with an eight-wire trailer located at the rear of the cab for a tractor and at the rear towing harness.
Page 205: Service And Appearance Care
Section 5 Service and Appearance Care Service ............5-4 Engine Oil (Isuzu Diesel Engine) .....5-32 Accessories and Modiﬁcations ......5-4 Engine Oil Life System (Gasoline Engine) ..5-36 ® California Proposition 65 Warning .....5-5 Engine Oil Life System (DURAMAX /Isuzu California Perchlorate Materials Requirements ..5-5 Diesel Engines) .........5-37 ®...
Page 206 Section 5 Service and Appearance Care Four-Wheel Drive ..........5-73 Tightening the Wheel Nuts ......5-86 Wheel Replacement ........5-90 Front Axle ............5-74 If a Tire Goes Flat ........5-92 Noise Control System ........5-75 Appearance Care ..........5-94 Tampering with Noise Control System Interior Cleaning ...........5-94 Prohibited ..........5-75 Fabric/Carpet ..........5-95 Bulb Replacement ..........5-76...
Page 207 Section 5 Service and Appearance Care Vehicle Identiﬁcation ........5-101 Power Windows and Other Power Options ..5-103 Vehicle Identiﬁcation Number (VIN) ....5-101 Fuses and Circuit Breakers ......5-103 Service Parts Identiﬁcation Label ....5-102 Instrument Panel Fuse Block ......5-103 Underhood Fuse Block ........5-106 Electrical System ..........5-102 Add-On Electrical Equipment ......5-102 Capacities and Speciﬁcations ......5-109...
Page 208: Service
Service Accessories and Modiﬁcations Adding non-dealer accessories to your vehicle can For service and parts needs, visit your dealer/retailer. affect its performance and safety. Such things as, You will receive genuine GM parts and GM-trained and airbags, braking, stability, ride and handling, emissions supported service people.
Page 209: California Proposition 65 Warning
Aftermarket Engine Performance California Proposition 65 Warning Enhancement Products and Most motor vehicles, including this one, contain and/or Modiﬁcations emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some aftermarket engine performance products and Engine exhaust, many parts and systems (including modiﬁcations promise a way to increase the horsepower some inside the vehicle), many ﬂuids, and some...
Page 210: Doing Your Own Service Work
Doing Your Own Service Work You should keep a record with all parts receipts and list the mileage and the date of any service work you perform. See Part D: Maintenance Record on page 6-33. CAUTION: Engine Fan Breakage You can be injured and your vehicle could be damaged if you try to do service work on a CAUTION: vehicle without knowing enough about it.
Page 211: Fuel
Gasoline Octane CAUTION: (Continued) Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, Winter Fronts, Grille Covers or Obstructions: you might notice an audible knocking noise when you drive, commonly referred to as spark knock.
Page 212: Additives
Additives Notice: Your vehicle was not designed for fuel that contains methanol. Do not use fuel containing methanol. It can corrode metal parts in the fuel To provide cleaner air, all gasolines in the United States system and also damage plastic and rubber parts. are now required to contain additives that help prevent That damage would not be covered under your engine and fuel system deposits from forming, allowing...
Page 213: Diesel Engine Fuel
Diesel Engine Fuel What Fuel to Use ® ® For the Caterpillar diesel, see the Caterpillar Notice: Use of diesel fuel other than Ultra Low Operation & Maintenance Manual for information Sulfur Diesel (15 ppm sulfur maximum) or engine oil concerning fuel usage.
Page 214 In the United States, for best results use No. 2-D diesel Because of the cleansing properties of biodiesel, fuel year-round (above and below freezing conditions) switching from straight diesel to a biodiesel blend can as oil companies blend No. 2-D fuel to address climate prematurely restrict the fuel ﬁlter with normal deposits in differences.
Page 215 What Fuel to Use in Canada Canadian fuels are blended for seasonal changes. Diesel Type “A” fuel is blended for better cold weather starting (below 0°F or −18°C); however, you might notice Notice: Use of diesel fuel other than Ultra Low Sulfur Diesel (15 ppm sulfur maximum) or engine oil some power and fuel economy loss.
Page 216: Very Cold Weather Operation
Very Cold Weather Operation Notice: If there is water in your diesel fuel and the weather is warm or humid, fungus and bacteria can grow in the fuel. They can damage your Follow the instructions listed previously under the fuel system. A diesel fuel biocide can be used to heading “What Fuel to Use.”...
Page 217 Water In Fuel Light Notice: If you drive when this warning indicator is on, you can damage your fuel injection system Problem Recommended Action and your engine. If the indicator comes on right after Light comes on Drain water from the fuel you refuel, it means water was pumped into your intermittently.
Page 218 4. Open the drain valve If the water-in-fuel light comes on again after driving a by turning two to three short distance or the engine runs rough or stalls, a large turns. When fuel amount of water has probably been pumped into the empties from the valve, fuel tank.
Page 219 If one or more of the above occurred, it is very likely 3. Make sure the fuel lines are properly connected that air has entered your fuel system and that you will and the fuel ﬁlter is cool enough to touch. need to prime the fuel system before operating the 4.
Page 220 ® Priming the 7.8L DURAMAX Diesel 6. Repeatedly push down on the fuel ﬁlter primer Engine pump with the palm ® If your vehicle is equipped with the 7.8L DURAMAX of your hand. Let the diesel engine, use the following procedure to prime the pump return upward engine: between pushes.
Page 221: Running Out Of Fuel
Running Out of Fuel 5. Use a clean cloth to remove dirt and oil from the fuel ﬁlter head and breather valve. If the diesel engine stalls and you think that you have 6. Use the palm of your hand to repeatedly press and run out of fuel, do this to restart your engine: release the plunger at the top of the fuel ﬁlter priming pump.
Page 222: Fuel Filter Replacement
4. Turn the ignition key to START for 10 to 15 seconds If your vehicle has the 6.6L engine, the fuel ﬁlter is at a time until your engine starts. If the engine tries located in the engine compartment on the driver’s side to run, but does not run smoothly, increase the rpm of the vehicle.
Page 223: Fuels In Foreign Countries
5. Reinstall and tighten the ﬁlter container and To reset the Fuel Filter Change light: reconnect the water sensor wire to the ﬁlter. 1. Turn the ignition key to RUN with the engine off 6. Use the fuel ﬁlter priming procedure earlier in this 2.
Page 224: Filling The Tank
Filling the Tank The fuel cap can be on either or both sides of your vehicle depending on option content. To take off the cap, turn it slowly counterclockwise. CAUTION: If you get fuel on yourself and then something ignites it, you could be badly burned. Fuel can spray out on you if you open the fuel cap too quickly.
Page 225: Filling A Portable Fuel Container
Filling a Portable Fuel Container If you have dual tanks, ﬁll the driver’s side tank, or forward tank, ﬁrst. The fuel gage will give better readings this way. Your gage will show the total fuel left in both tanks. CAUTION: If your vehicle is a C4/C5 model and you have dual tanks, the engine must be off when refueling or the fuel Never ﬁll a portable fuel container while it is in...
Page 226: Checking Things Under The Hood
Checking Things Under Hood Latches the Hood CAUTION: Things that burn can get on hot engine parts and start a ﬁre. These include liquids like fuel, oil, coolant, brake ﬂuid, windshield washer and other ﬂuids, and plastic or rubber. You or others could be burned.
Page 227: Engine Oil
® Engine Oil (Caterpillar Diesel Engine) ® See your Caterpillar Operation & Maintenance Manual for information on oil quality and viscosities as well as the temperature range chart. Then take the hand hold and pull the hood forward. When you tilt the hood far enough, there are cables that will support it.
Page 228: Engine Oil (Gasoline Engine)
Engine Oil (Gasoline Engine) Checking Engine Oil It is a good idea to check the engine oil every time you If the low oil light appears get fuel. In order to get an accurate reading, the oil on the instrument cluster, must be warm and the vehicle must be on level ground.
Page 229: When To Add Engine Oil
When to Add Engine Oil The engine oil ﬁll cap is located near the engine oil dipstick in the engine compartment, on the driver’s side of the vehicle. Be sure to add enough oil to put the level somewhere in the proper operating range in the cross-hatched area.
Page 230: What Kind Of Engine Oil To Use
What Kind of Engine Oil to Use Look for three things: • GM6094M Your vehicle’s engine requires oil meeting GM Standard GM6094M. Look for and use only an oil that meets GM Standard GM6094M. • SAE 5W-30 As shown in the viscosity chart, SAE 5W-30 is best for your vehicle.
Page 231: Engine Oil Additives
Look for this information on the oil container, and use If you are in an area of extreme cold, where the temperature falls below −20°F (−29°C), it is only those oils that are identiﬁed as meeting GM Standard GM6094M and have the starburst symbol on recommended that you use either an SAE 5W-30 the front of the oil container.
Page 232: Engine Oil
® Engine Oil (DURAMAX Diesel If the engine has not been run long enough to bring it up to normal operating temperature and the oil Engine) is cool, turn off the engine and allow 30 minutes for the oil to drain back into the oil pan. If you do not do Checking Engine Oil this, the oil dipstick might not show the actual level.
Page 233 When to Add Engine Oil Add oil at the engine oil ﬁll cap in the engine If the oil is below the cross-hatched area at the tip of compartment. Install and the dipstick, add at least two quarts/liters of the fully tighten the ﬁll cap recommended oil.
Page 234 What Kind of Engine Oil to Use Look for three things: • CJ-4 Oils designated as API CJ-4 are required for your vehicle. The CJ-4 designation can appear either alone or in combination with other American Petroleum Institute (API) designations, such as API CJ-4/SL.
Page 235 • Engine Oil Additives SAE 15W-40 As shown in the viscosity chart, SAE 15W-40 is best Do not add anything to the oil. The recommended oils for your vehicle. When it is very cold, below 0°F with the API service symbol are all you need for good (−18°C), you should use SAE 5W-40 to improve cold performance and engine protection.
Page 236 Engine Oil (Isuzu Diesel Engine) If the engine has not been run long enough to bring it up to normal operating temperature and the oil is cool, turn off the engine and allow 30 minutes for Checking Engine Oil the oil to drain back into the oil pan. If you do not do this, the oil dipstick might not show the actual level.
Page 237 If the oil is below the ADD Add oil at the engine oil ﬁll mark on the dipstick, add cap in the engine at least one quart/liter compartment. Install and of the recommended oil. fully tighten the ﬁll cap when you are through. Be sure to add enough oil to put the level somewhere in the proper operating range.
Page 238 What Kind of Engine Oil to Use Look for three things: • CJ-4 Oils designated as API CJ-4 are required for your vehicle. The CJ-4 designation can appear either alone or in combination with other American Petroleum Institute (API) designations, such as API CJ-4/SL.
Page 239 • Engine Oil Additives SAE 10W-40 or SAE 15W-40 As shown in the viscosity chart, SAE 10W-40 or Do not add anything to the oil. The recommended oils SAE 15W-40 is best for your vehicle. When it is very with the API service symbol are all you need for cold, below 0°F (−18°C), you should use SAE 5W-40 good performance and engine protection.
Page 240: Engine Oil Life System (Gasoline Engine)
Engine Oil Life System (Gasoline If the system is ever reset accidentally, you must change the oil at 3,000 miles (5 000 km) since your last Engine) oil change. Remember to reset the oil life system whenever the oil is changed. When to Change Engine Oil How to Reset the Engine Oil Life Your vehicle has a computer system that lets you know...
Page 241: Diesel Engines)
What to Do with Used Oil which an oil change will be indicated can vary considerably. For the oil life system to work properly, you Used engine oil contains certain elements that can be must reset the system every time the oil is changed. unhealthy for your skin and could even cause cancer.
Page 242: How To Reset The Engine Oil Life System
How to Reset the Engine Oil Life What to Do with Used Oil System Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer. The Engine Oil Life System calculates when to change Do not let used oil stay on your skin for very long.
Page 243 Engine Oil Life System Engine Air Cleaner/Filter ® (Caterpillar Diesel Engine) How to Reset the Engine Oil Life System The Engine Oil Life System calculates when to change the engine oil and ﬁlter based on vehicle use. Whenever the oil is changed, reset the system so it can calculate when the next oil change is required.
Page 244 When to Inspect the Engine Air How to Inspect the Engine Air ® Cleaner/Filters Cleaner/Filter (DURAMAX Diesel 6.6L, V8 Gas and CAT Diesel Engines) CAUTION: Operating the engine with the air cleaner/ﬁlter off can cause you or others to be burned. The air cleaner not only cleans the air;...
Page 245 How to Inspect the Engine Air The engine air cleaner/ﬁlter is located in the center of the engine compartment. ® Cleaner/Filters (DURAMAX 7.8L and To inspect the engine air cleaner/ﬁlter, perform the Isuzu 6H Diesel Engine) following: 1. Disconnect the air CAUTION: compressor hose by pinching the connector...
Page 246 Hood Inlet Seal If your vehicle is being used in heavy snow conditions or for snow plowing, there is a possibility of snow and ice build up in the inlet to the air cleaner, blocking airﬂow to the engine and negatively impacting engine performance.
Page 247: Automatic Transmission Fluid
Automatic Transmission Fluid Manual Transmission Fluid When to Check When to Check A good time to check your automatic transmission ﬂuid A good time to have it checked is when the engine oil is level is when the engine oil is checked. See your checked.
Page 248: Engine Coolant
How to Add Fluid Engine Coolant (Gas and ® DURAMAX /Isuzu 7.8L L6 Engines) To add transmission ﬂuid, do the following: 1. Remove the ﬁller plug. The cooling system in your vehicle is ﬁlled with ® DEX-COOL engine coolant. This coolant is designed 2.
Page 249: What To Use
What to Use Notice: If you use an improper coolant mixture, your engine could overheat and be badly damaged. Use a mixture of one-half clean, drinkable water and The repair cost would not be covered by your ® one-half DEX-COOL coolant which will not damage warranty.
Page 250: Checking Coolant
Checking Coolant CAUTION: Turning the surge tank pressure cap when the engine and radiator are hot can allow steam and scalding liquids to blow out and burn you badly. Never turn the surge tank pressure cap — even a little — when the engine and radiator are hot.
Page 251: Adding Coolant
Adding Coolant Coolant Surge Tank Pressure Cap ® If you need more coolant, add the proper DEX-COOL The coolant surge tank pressure cap is located in coolant mixture at the surge tank, but only when the the engine compartment, on the driver’s side of the engine is cool.
Page 252: Engine Overheating
Engine Overheating If Steam Is Coming From Your Engine You will ﬁnd an engine coolant temperature gage, as well as a low coolant warning light, on your vehicle’s CAUTION: instrument panel. See Engine Coolant Temperature Gage on page 3-35 and Low Coolant Warning Light on page 3-35 for more information.
Page 253: If No Steam Is Coming From Your Engine
If No Steam Is Coming From Your If you no longer have the overheat warning, you can drive. Just to be safe, drive slower for about 10 minutes. Engine If the warning does not come back on, you can drive normally.
Page 254: Cooling System
Cooling System The coolant level should be at the FULL COLD mark or higher. If it is not, When you decide it is safe to lift the hood, here is what you may have a leak at you will see: the pressure cap or in the radiator hoses, heater hoses, radiator, water...
Page 255 Notice: Engine damage from running the engine without coolant is not covered by the warranty. CAUTION: ® Notice: Using coolant other than DEX-COOL cause premature engine, heater core or radiator Heater and radiator hoses, and other engine corrosion. In addition, the engine coolant may parts, can be very hot.
Page 256: How To Add Coolant To The Coolant Surge Tank
How to Add Coolant to the Coolant CAUTION: (Continued) Surge Tank If you have not found a problem yet, check to see if cap when the cooling system, including the coolant is visible in the surge tank. If coolant is visible coolant surge tank pressure cap, is hot.
Page 257 Notice: In cold weather, water can freeze and crack 2. Then keep turning the pressure cap slowly, and the engine, radiator, heater core and other parts. remove it. Use the recommended coolant and the proper coolant mixture. CAUTION: You can be burned if you spill coolant on hot engine parts.
Page 258: Engine Fan Noise
Engine Fan Noise Your vehicle has a clutched engine cooling fan. When the clutch is engaged, the fan spins faster to provide more air to cool the engine. In most everyday driving conditions, the clutch is not fully engaged. This improves fuel economy and reduces fan noise.
Page 259: Windshield Washer Fluid
How To Check Power Steering Fluid What to Use Check your power steering ﬂuid only when the engine is To determine what kind of ﬂuid to use, see warm. If the engine is not warm, you probably will not Part C: Recommended Fluids and Lubricants on get an accurate reading.
Page 260: Adding Washer Fluid
Adding Washer Fluid Notice: • When using concentrated washer ﬂuid, follow Open the cap with the the manufacturer’s instructions for adding washer symbol on it. Add water. washer ﬂuid until the • Do not mix water with ready-to-use washer ﬂuid. tank is full.
Page 261: Brakes
Brakes Checking Brake Fluid Apply the brake pedal several times with the ignition off. Brake Fluid The brake ﬂuid reservoir is in the engine compartment on the driver side of the vehicle. Clean one of the If your vehicle has reservoir caps and the area around the cap, and hydraulic brakes, there is a remove it.
Page 262: What To Add
What to Add Notice: • Using the wrong ﬂuid can badly damage brake Use the proper ﬂuid listed in the Maintenance Schedule. hydraulic system parts. For example, just a Use new brake ﬂuid from a sealed container only. few drops of mineral-based oil, such as engine Always clean the brake ﬂuid reservoir cap/cover and the oil, in the brake hydraulic system can damage area around the cap/cover before removing it.
Page 263: Brake Adjustment
Four-Wheel and Six-Wheel Drum Notice: Do not manually adjust automatic slack adjusters. Manual adjustment of the automatic slack Brakes (Air Only) adjusters can result in a degradation of the slack adjuster performance over time. If the brake The brake drums should be removed and inspected chamber pushrod stroke is out of adjustment, the each time the tires are removed for rotation or changing.
Page 264: Air Dryer
Hydraulic Brake Pads Drain the air brakes at full system pressure. To be sure you are at full pressure, check the air pressure gage. Brake pad lining life will vary depending on vehicle It should read at least 100 psi (692 kPa). application, working environment, equipment Air Dryer maintenance, and style of driving.
Page 265 Clutch Pedal Free Travel The air supply for this system must be If you have a V8 engine and a manual transmission, the maintained by releasing clutch will need adjustment when pedal free travel gets the drain valve to eject any down to about 1/4 inch (6 mm), as measured at the clutch moisture that could have pedal pad.
Page 266 Single Axle Models 5-62...
Page 267 Item Number Item Remarks Brake Camshaft** One ﬁtting each (apply sparingly). Steering Column Slip Joint* One ﬁtting. Steering Drag Link Ends One ﬁtting each end. Pivot Points and Hinges Apply chassis lubricant. Pivot Points and Hinges Apply chassis lubricant. Slack Adjuster** One ﬁtting.
Page 268 Item Number Item Remarks Lubricate with GM Part No. 1051344 Wheel Bearing Propshaft U-Joints Lubricant. Parking Brake Clevis Pin$ Apply chassis lubricant. Parking Brake Lever Pivot*, $ Apply chassis lubricant. Clutch Release Cross Shaft, Master Apply chassis lubricant, ﬁll to 1/4 inch (6 mm) below Cylinder$ opening.
Page 269 Tandem Axle Models Item Number Item Remarks Brake Camshafts One ﬁtting each. One ﬁtting each joint. Lubricate with Propshaft U-Joint GM Part No. 1051344, Wheel Bearing Lubricant Fill to level of Rear Axles ﬁller plug. Apply engine oil at Brake Shoe pin to shoe Roller Pins joint only.
Page 270: Battery
Battery Vehicle Storage Your vehicle has two or more maintenance free batteries. When it is time for a new battery, see your CAUTION: dealer/retailer for one that has the replacement number shown on the original battery’s label. Batteries have acid that can burn you and gas Warning: Battery posts, terminals, and related accessories contain lead and lead compounds, that can explode.
Page 271: Jump Starting
Jump Starting Trying to start your vehicle by pushing or pulling it will not work, and it could damage your vehicle. If your vehicle’s battery (or batteries) has run down, you 1. Check the other vehicle. It must have a 12-volt may want to use another vehicle and some jumper battery (or batteries) with a negative ground system.
Page 272 Notice: If you leave your radio or other accessories You will not see the battery (or batteries) of your on during the jump starting procedure, they could vehicle under the hood. They are located in a frame be damaged. The repairs would not be covered mounted battery box, which is located on either by your warranty.
Page 273 6. Connect the red positive (+) cable to the CAUTION: positive (+) terminal of the dead battery. Use a remote Fans or other moving engine parts can injure positive (+) terminal if you badly. Keep your hands away from moving the vehicle has one.
Page 274 8. Now connect the black negative (−) cable to the 10. Now start the vehicle with the good battery and run negative (−) terminal of the good battery. Use a the engine for a while. Use the high idle option if remote negative (−) terminal if the vehicle has one.
Page 275 To disconnect the jumper cables from both vehicles, do the following: 1. Disconnect the black negative (−) cable from the vehicle that had the dead battery. 2. Disconnect the black negative (−) cable from the vehicle with the good battery. 3.
Page 276: Rear Axle
Rear Axle How to Check Lubricant When to Check and Change Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant and when to change it. See Scheduled Maintenance on page 6-5. Notice: If you drive your vehicle through deep water that is higher than the front or rear axle, water may enter the axle housing and cause the axle lubricant to break down.
Page 277: Rear Axle Shift Motor
Rear Axle Shift Motor How to Check Lubricant When to Check and Change Fluid If you have an optional air-shift two-speed, controlled traction, or locking differential type rear axle, a good time to check the ﬂuid level in the axle shift motor is when the rear axle lubricant is checked.
Page 278: Front Axle
When to Change Lubricant You should avoid driving your vehicle through deep puddles or standing water. If you must drive through Refer to the Maintenance Schedule to determine how water that is higher than the front or rear axle, see your often to change the lubricant.
Page 279: Noise Control System
What to Use These standards apply only to vehicles sold in the United States. To determine what kind of lubricant to use see Part C: Federal law prohibits the following acts or the causing Recommended Fluids and Lubricants on page 6-31. thereof: Noise Control System 1.
Page 280: Bulb Replacement
Fan and Drive: Bulb Replacement • Removal of fan clutch, if the vehicle has one, or It is recommended that all bulbs be replaced by your rendering clutch inoperative. dealer/retailer. • Removal of the fan shroud, if the vehicle has one. Windshield Wiper Blade Air Intake: Replacement...
Page 281 Here’s how to remove the wiper blade: 2. Push the release lever and slide the wiper assembly toward the driver side of the vehicle. 1. Pull the windshield wiper arm away from the 3. Install a new blade by reversing Steps 1 and 2. windshield.
Page 282: Other Service Items
Other Service Items Fuel Filter (Diesel Engines) If you have a diesel engine, your fuel ﬁlter is located in the engine compartment on the driver’s side of the Fuel Filter vehicle, or along the driver’s side frame rail. See “Fuel Filter Replacement”...
Page 283: Primary Fuel Filter And Water Separator
Primary Fuel Filter and Water Secondary Fuel Filter and Heater Separator Your vehicle may have this fuel ﬁlter and fuel heater. It is mounted on the left side of the engine. Your vehicle may have this spin-on ﬁlter. It is located on the driver’s side frame rail.
Page 284: Secondary Fuel Filter And Water Separator/Heater
Secondary Fuel Filter and Water To check or drain the bowl, do the following: • Shut off the engine. Separator/Heater • Push up on the spring loaded drain valve until clear ® (Caterpillar Diesel) fuel is ﬂowing from the valve. The particles or water will drain out ﬁrst.
Page 285: Front Wheel Bearings With
Front Wheel Bearings with If your vehicle has oil-ﬁlled hubs, occasionally check Oil-Filled Hubs to see if they have enough oil. You can tell if there Notice: If you drive your vehicle through deep is oil there by using water that is higher than the front or rear axle, water the circular gage on the may enter the axle housing and cause the axle sight glass.
Page 286: Tires
Tires CAUTION: (Continued) Your new vehicle comes with high-quality tires made by a leading tire manufacturer. If you ever • Overinﬂated tires are more likely to be have questions about your tire warranty and where cut, punctured, or broken by a sudden to obtain service, see your vehicle Warranty impact —...
Page 287: How To Check
How to Check Notice: Do not let anyone tell you that under-inﬂation or over-inﬂation is all right. It is Use a good quality pocket-type gage to check tire not. If your tires do not have enough air pressure. You cannot tell if your vehicle’s tires are (under-inﬂation), you can get the following: properly inﬂated simply by looking at them.
Page 288: Dual Tire Operation
Dual Tire Operation When It Is Time for New Tires When the vehicle is new, check the wheel nut tightness Various factors, such as maintenance, temperatures, on all wheels with a torque wrench after your ﬁrst driving speeds, vehicle loading, and road conditions, 100 miles (160 km) and then 1,000 miles (1 600 km) inﬂuence when you need new tires.
Page 289: Buying New Tires
If your vehicle has four-wheel drive, the axle differentials, propshafts, and transfer case may be damaged if tires CAUTION: of different sizes, brands or tread types are installed on the front and rear axles. That damage would not be covered under your warranty. Mixing tires could cause you to lose control while driving.
Page 290: Wheel Alignment And Tire Balance
Wheel Alignment and Tire Balance First, use these pictures to decide what kind of wheels you have. The wheels on your vehicle were aligned at the factory to give you the longest tire life and best overall performance. Proper front wheel alignment must be maintained in order to ensure efficient steering, good directional stability, and prevent abnormal tire wear.
Page 291 Hub-Piloted Wheels, 8-Hole or 10-Hole 4. Finger-tighten the nuts. The studs and nuts used with these wheels have 5. Oil the surfaces (B) right-hand threads. between the nuts (C) and washers (A). 1. With intermittent pilot pads, position a pad at Do not oil the studs or 12 o’clock to center the wheel and reduce run-out.
Page 292 6. Tighten the nuts to 400 lb ft (542 Y) if an 8-hole stud or 480 lb ft (650 Y) if a 10-hole stud, using the following diagrams. 10-Hole (Front) 10-Hole (Rear) CAUTION: 8-Hole Never use oil or grease on studs or the threads of the wheel nuts.
Page 293 CAUTION: CAUTION: If wheel studs are damaged, they can break. Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts If all the studs on a wheel broke, the wheel become loose after a time. The wheel could come off and cause a crash.
Page 294: Wheel Replacement
Wheel Replacement If you need to replace any of your wheels, wheel bolts or wheel nuts, replace them only with new GM original equipment parts. This way, you will be sure to Replace any wheel that is bent, cracked, or badly rusted have the right wheel, wheel bolts and wheel nuts for or corroded.
Page 295 Using wheels and tires with higher load-carrying limits than the original wheels and tires does not change CAUTION: the Gross Axle Weight Rating (GAWR) or the Gross Vehicle Weight Rating (GVWR) of your vehicle. See Loading Your Vehicle on page 4-21 for more Without the correct wheel, wheel bolts or information.
Page 296: If A Tire Goes Flat
Used Replacement Wheels If a Tire Goes Flat It is unusual for a tire to blowout while you are driving, especially if you maintain your tires properly. If air goes CAUTION: out of a tire, it is much more likely to leak out slowly. But if you should ever have a blowout, here are a few tips about what to expect and what to do: Putting a used wheel on your vehicle is...
Page 297 CAUTION: CAUTION: Your vehicle, when new, did not include tire If you try to put air back into a tire that has run changing equipment or a place to store a tire ﬂat, even a tire that was extremely low on air, in the vehicle.
Page 298: Appearance Care
Appearance Care Notice: If you use abrasive cleaners when cleaning glass surfaces on your vehicle, you could scratch the glass and/or cause damage to the rear window Interior Cleaning defogger. When cleaning the glass on your vehicle, use only a soft cloth and glass cleaner. Your vehicle’s interior will continue to look its best if it is Many cleaners contain solvents that may become cleaned often.
Page 299: Fabric/Carpet
• To clean, use the following instructions: Use only mild, neutral-pH soaps. Avoid laundry detergents or dishwashing soaps with degreasers. 1. Saturate a lint-free, clean white cloth with water or Using too much soap will leave a residue that club soda. leaves streaks and attracts dirt.
Page 300: Instrument Panel, Vinyl, And Other Plastic Surfaces
Instrument Panel, Vinyl, and Other Care of Safety Belts Plastic Surfaces Keep belts clean and dry. A soft cloth dampened with water may be used to remove dust. If a more thorough cleaning is necessary, CAUTION: a clean soft cloth dampened with a mild soap solution can be used to gently remove dust and dirt.
Page 301: Washing Your Vehicle
Washing Your Vehicle Use of power washers exceeding 1,200 psi (8 274 kPa) can result in damage or removal of paint and decals. The best way to preserve your vehicle’s ﬁnish is to keep it clean by washing it often. Cleaning Exterior Lamps/Lenses Notice: Certain cleaners contain chemicals that can Use only lukewarm or cold water, a soft cloth and a car...
Page 302: Windshield And Wiper Blades
Windshield and Wiper Blades Foreign materials such as calcium chloride and other salts, ice melting agents, road oil and tar, tree sap, bird droppings, chemicals from industrial chimneys, etc., Clean the outside of the windshield with glass cleaner. can damage your vehicle’s ﬁnish if they remain on Clean the rubber blades using a lint free cloth or paper painted surfaces.
Page 303: Tires
Tires Notice: If you use strong soaps, chemicals, abrasive polishes, cleaners, brushes, or cleaners that contain acid on aluminum or chrome-plated To clean the tires, use a stiff brush with tire cleaner. wheels, you could damage the surface of the Notice: Using petroleum-based tire dressing wheel(s).
Page 304: Underbody Maintenance
Underbody Maintenance Vehicle Care/Appearance Materials Description Usage Chemicals used for ice and snow removal and dust Polishing Cloth Interior and exterior control can collect on the underbody. If these are not Wax-Treated polishing cloth. removed, corrosion and rust can develop on the underbody parts such as fuel lines, frame, ﬂoor pan, Tar and Road Oil Removes tar, road oil and...
Page 305: Vehicle Identiﬁcation
Vehicle Care/Appearance Materials Vehicle Identiﬁcation (cont’d) Description Usage Vehicle Identiﬁcation Number (VIN) Removes light scratches Cleaner Wax and protects ﬁnish. Cleans, shines and Foaming Tire Shine protects in one easy step, Low Gloss no wiping necessary. Medium foaming shampoo. Cleans and Wash Wax Concentrate lightly waxes.
Page 306: Service Parts Identiﬁcation Label
Service Parts Identiﬁcation Label Your vehicle has an airbag system. Before attempting to add anything electrical to your vehicle, see Servicing Your Airbag-Equipped Vehicle on page 1-59. This label is in a location determined by the body manufacturer. It is very helpful if you ever need to order parts.
Page 307: Fusible Links
Fusible Links Fuses and Circuit Breakers A fusible link is a short piece of wire several gauge The wiring circuits in your vehicle are protected from sizes smaller than the circuit it protects. It will melt in an short circuits by a combination of fuses, circuit breakers, overload situation, opening the circuit.
Page 308 Fuse Usage Fuse Usage Stoplamps Hazard Warning Flashers Not Used Power Post Parking Lamps Courtesy Lamps Powertrain Control Module Warning Lights, Gages and Indicators Auxiliary Wiring Starter Heater/Air Conditioning Rear Axle/Four-Wheel-Drive 5-104...
Page 309 Fuse Usage Fuse Usage Blank Not Used Trailer Turn Signals/Hazard Warning Flashers Brake Warning Lamp Radio/Chime RT PRK Passenger Side Parking Lamps Daytime Running Lamps Blank Not Used Blank Not Used Airbag System LT PARK Driver Side Parking Lamps Exterior/Interior Lamps RT REAR Passenger Side Rear Turn Parking Brake...
Page 310: Underhood Fuse Block
To access the fuse blocks, gently squeeze both sides of Relay Usage the cover to unlatch the tabs at the top. Then, unsnap Engine Control Unit/Power Take-Off both attachments at the bottom and remove the cover. ECU/PTO* ® *Diesel 7.8 DURAMAX Notice: Spilling liquid on any electrical components C4/C5 Brake Lamps, BRK LAMP...
Page 311 Fuse Usage Fuse Usage RR DEFOG Rear Defogger Fuel (L18/LMM), Electronic Control NOTE 2 Module (LF6) ENG 1 Engine 1 NOTE 4 Electronic Control Module (LF6) ENG 3 Engine 3 (L18/LF6/LF8) STUD A Spare PCM-B Powertrain Control Module STUD B Spare Transmissions (LF8) ENG 4...
Page 312 Fuse Usage IGN 1 Ignition 1 IGN 4 Ignition 4 IGN 3 Ignition 3 BATT/HAZ Battery/Hazard Warning Flashers HEADLAMP Headlamps LIGHTING Interior/Exterior Lamps HVAC Climate Control System C4/C5 Electric Brake, NOTE C6/C7/C8 Brake Lamps Secondary Underhood Fuse Block 5-108...
Page 313: Capacities And Speciﬁcations
Capacities and Speciﬁcations The following approximate capacities are given in English and metric conversions. See Part C: Recommended Fluids and Lubricants on page 6-31 for more information. Capacities Application English Metric For the air conditioning system refrigerant charge amount, see the refrigerant caution label located Air Conditioning Refrigerant R134a under the hood.
Page 314 Capacities Application English Metric Cooling System – C6/C7/C8 Manual Transmission 7.2L L6 Engine 30.4 qt 28.8 L 7.2L L6 Engine with A/C and Increased Cooling 33.9 qt 32.1 L Isuzu 6H Engine (207–275 hp) 32.7 qt 31.0 L Isuzu 6H Engine (207–275 hp) with A/C and Increased 35.9 qt 34.0 L Cooling...
Page 315 Capacities Application English Metric Fuel Capacity – C4/C5 Models Standard (Mid-Mounted) 25 gal 94.6 L Optional (Dual-Tank) (Mid-Mounted) 40 gal 151.4 L Optional (Mid-Mounted) 32 gal 121.1 L Optional (Side-Mounted) 35 gal 132.5 L Optional (Mid-Mounted) 40 gal 151.4 L Optional (Mid-Mounted) 60 gal 227.1 L...
Page 316 Capacities Application English Metric Front 4WD Axle (G38) 7.0 pt 3.6 L Rear Axle – Single Speed 80 (GL4) 8.0 pt 3.7 L 19060D (HPM), 19060S (HPK), 21060D (HPN), 31.0 pt 14.7 L 21060S (HPP), 22060S (HPG) 23090S (HPT) 42.5 pt 20.1 L 23105D (HNB), 23105S (HNA) 51.0 pt...
Page 317 Capacities Application English Metric Rear Axle – Two-Speed 19060T (HPL), 22060T (HPH) 38.0 pt 18.0 L 21060T (H15) 38.0 pt 18.0 L 23082T (H25) 44.0 pt 20.8 L 26080T (GJ4) 44.0 pt 20.8 L Transfer Case (Four-Wheel Drive) 4.0 pt 1.9 L Transmission Fluid, Automatic 3000 RDS and EVS, and 3500 RDS and EVS with PTO...
Page 318 Capacities Application English Metric Transmission Fluid, Manual ES052-7, ES066-7 22.0 pt 10.4 L FS5205A 12.5 pt 5.9 L FSO8406, FS6305A, FS6305B, FS6406, FS5406A 19.5 pt 9.2 L FS4205A, FS4205B 11.5 pt 5.4 L RT6609 12.0 pt 5.7 L RT8709 26.0 pt 12.3 L RT8908LL 28.0 pt...
Page 319: Maintenance Replacement Parts
Maintenance Replacement Parts Replacement parts identiﬁed by name, part number, or speciﬁcation can be obtained from your dealer. ® Part GM Part Number ACDelco Part Number Air Compressor Filter 88915425 A507CF Haldex compressor (8.1L Engine Only) Engine Air Cleaner/Filter 6.6L V8 (C4/C5 Models) 19152817 A3102C 7.2L L6;...
Page 320 ® Part GM Part Number ACDelco Part Number Fuel Filter 6.6L V8 97385488 TP1298A 7.2L L6 — 1R-0751†† Isuzu 6H 98026037 — 8.1L V8 (C4/C5 with NG6/NK1 or U-Haul) 21998364 — 8.1L V8 (C4/C5 with all other fuel tanks) 10376257 —...
Page 321: Engine Drive Belt Routing
Engine Drive Belt Routing 8.1L V8 Engine (C6,C7,C8) 8.1L V8 Engine (C4, C5) Air conditioning compressor (A) Air brake compressor (B) Air conditioning compressor (A) Dual Generators (B) 5-117...
Page 322 Isuzu 6H Diesel Engine ® 6.6L V8 DURAMAX Diesel Engine Air conditioning compressor (A) Dual Generators (A) 5-118...
Page 323 7.2L I6 ® Caterpillar Diesel Engine Air conditioning compressor (A) 5-119...
Page 324 NOTES 5-120...
Page 325 Section 6 Maintenance Schedule Maintenance Schedule ........6-2 Scheduled Maintenance ........6-5 Introduction ...........6-2 Part B: Owner Checks and Services ....6-26 Maintenance Requirements ......6-2 At Each Fuel Fill ..........6-26 Your Vehicle and the Environment ....6-2 At Least Twice a Year ........6-27 How This Section is Organized ......6-3 At Least Once a Year ........6-30 Part A: Scheduled Maintenance Services ...6-4 Part C: Recommended Fluids and Lubricants ..6-31...
Page 326: Maintenance Schedule
Maintenance Schedule Maintenance Requirements Maintenance intervals, checks, inspections and Introduction recommended ﬂuids and lubricants as prescribed in this manual are necessary to keep your vehicle in good Important: Keep engine oil at the proper level and working condition. Any damage caused by failure to change as recommended.
Page 327: How This Section Is Organized
How This Section is Organized “Part B: Owner Checks and Services” tells you what should be checked and when. It also explains what you can easily do to keep your vehicle in good condition. This maintenance schedule is divided into four parts: “Part C: Recommended Fluids and Lubricants”...
Page 328: Part A: Scheduled Maintenance Services
Part A: Scheduled Maintenance The proper ﬂuids and lubricants to use are listed in Part C. Make sure whoever services your vehicle uses Services these. All parts should be replaced and all necessary repairs done before you or anyone else drives the In this part are scheduled maintenance services which vehicle.
Page 329: Scheduled Maintenance
Scheduled Maintenance 1,000 Miles (1 600 km) Wheel stud nut service. (36) The services shown in this schedule up to 100,000 miles Rear axle air shift motor service. (10) (166 000 km) should be repeated after 100,000 miles (166 000 km) at the same intervals for the life of 7,500 Miles (12 000 km) this vehicle.
Page 330 Clean air brake application valve (or every 3 months, Diesel Engine: Inspect engine air cleaner ﬁlter change or every 300 hours, whichever occurs ﬁrst). Lubricate indicator. If necessary, replace the ﬁlter. If vehicle is linkage. driven in dusty/dirty conditions, inspect ﬁlter change indicator at every engine oil change.
Page 331 Clean air brake application valve (or every 3 months, Cooling system service. Clean the cooling system or every 300 hours, whichever occurs ﬁrst). Lubricate ﬁlter cap with clean water, clean the core, pressure linkage. test the cap and the system for proper pressure capability, and inspect condition of cooling and heater Air brake chamber service (or every 2 months, hoses and clamps.
Page 332 Evaporative Control System service, if equipped, (or Diesel Engine: Inspect engine air cleaner ﬁlter every 24 months, whichever occurs ﬁrst). (2) (24) † change indicator. If necessary, replace the ﬁlter. If vehicle is driven in dusty/dirty conditions, inspect Rear axle air shift motor service. (10) ﬁlter change indicator at every engine oil change.
Page 333 37,500 Miles (60 000 km) Air brake service (or every 6 months, whichever occurs ﬁrst). (32) Gasoline Engine Only: Check engine oil life system. Air brake automatic slack adjuster service (or every If engine oil and ﬁlter are changed, reset system. 500 hours, whichever occurs ﬁrst).
Page 334 45,000 Miles (72 000 km) Chassis lubrication service (or every 6 months, whichever occurs ﬁrst). (11) Gasoline Engine Only: Check engine oil life system. Cooling system service. Clean the cooling system If engine oil and ﬁlter are changed, reset system. ﬁller cap with clean water, clean the core, pressure See “Engine Oil (Gasoline Engine)”...
Page 335 48,000 Miles (75 000 km) Check air brake relay valve operation and check for leaks (or every month, or every 300 hours, whichever Lubricate U-joints (or every 6 months, whichever occurs ﬁrst). occurs ﬁrst). Clean air brake application valve (or every 3 months, or every 300 hours, whichever occurs ﬁrst).
Page 336 Air brake service (or every 6 months, whichever Check ﬂuid levels (or every 3 months, whichever occurs ﬁrst). (32) occurs ﬁrst). (1) (5) Air brake automatic slack adjuster service (or every Gasoline Engine: Inspect engine air cleaner ﬁlter. 500 hours, whichever occurs ﬁrst). (33) If necessary, replace the ﬁlter.
Page 337 Exhaust system service (or every 6 months, C600, C700, and C800 Gasoline Engines Only: whichever occurs ﬁrst). (2) (3) (16) Engine drive belts service (or every 12 months, whichever occurs ﬁrst). (17) Wheel bearing (grease type) service (and whenever hubs are removed). (22) (36) Thermostatically controlled engine cooling fan service.
Page 338 72,000 Miles (115 000 km) Hydraulic brake service (or every 6 months, whichever occurs ﬁrst). (6) (36) Lubricate U-joints (or every 6 months, whichever Parking brake service (or every 6 months, whichever occurs ﬁrst). occurs ﬁrst). (21) 75,000 Miles (120 000 km) Air brake service (or every 6 months, whichever occurs ﬁrst).
Page 339 Diesel Engine: Inspect engine air cleaner ﬁlter Check air brake relay valve operation and check for change indicator. If necessary, replace the ﬁlter. leaks (or every month, or every 300 hours, whichever If vehicle is driven in dusty/dirty conditions, inspect occurs ﬁrst).
Page 340 82,500 Miles (132 000 km) 90,000 Miles (144 000 km) Gasoline Engine Only: Check engine oil life system. Gasoline Engine Only: Check engine oil life system. If engine oil and ﬁlter are changed, reset system. If engine oil and ﬁlter are changed, reset system. See “Engine Oil (Gasoline Engine)”...
Page 341 Chassis lubrication service (or every 6 months, Air brake service (or every 6 months, whichever whichever occurs ﬁrst). (11) occurs ﬁrst). (32) Cooling system service. Clean the cooling system Air brake automatic slack adjuster service (or every ﬁller cap with clean water, clean the core, pressure 500 hours, whichever occurs ﬁrst).
Page 342 Evaporative Control System service, if equipped, (or Air brake automatic slack adjuster service (or every every 24 months, whichever occurs ﬁrst). (2) (24) † 500 hours, whichever occurs ﬁrst). (33) Gasoline Engine: Air compressor remote mounted air Check air brake relay valve operation and check for ﬁlter dry element pleated paper air strainer service leaks (or every month, or every 300 hours, whichever (or every 6 months or every 1800 hours, whichever...
Page 343 ® ® ® 150,000 Miles (240 000 km) Rear axle service — Eaton , Rockwell , Spicer axles (or every 12 months, whichever occurs Cooling system service (or every 60 months since ﬁrst). (30) last service, whichever occurs ﬁrst). (2) (29) Exhaust brake service, if equipped.
Page 344 300,000 Miles (480 000 km) (4) = Applies to vehicles sold in the United States and is recommended for vehicles sold in Canada. ® ® ® Rear axle service — Eaton , Rockwell , Spicer (5) = Check ﬂuid level in brake master cylinder, power axles (or every 12 months, whichever occurs steering pump, front and rear axles, transmission, and ﬁrst).
Page 345 Remember to reset the Engine Oil Life System (11) = Chassis Lubrication Service: Lubricate all grease whenever the oil is changed. For more information, see ﬁttings in front suspension, front axle, and steering Engine Oil Life System (Gasoline Engine) on page 5-36 linkage.
Page 346 (12) = Check steering system: (15) = Check spring-to-axle U-bolts and shackle bolts for proper torque. See the service manual for torque • Look for damaged, loose, or missing parts. Inspect sequence and speciﬁcations. When parts are replaced, the steering linkage relay rod and tie rod ends for the torque must be checked and adjusted more often looseness or lack of lubricant.
Page 347 (21) = Inspect parking brake drum and linings for wear (25) = Replace spark plugs. Inspect wires for damage. or cracks and check linkage and adjustment. Check the wire boot and boot heat shield ﬁt at spark plugs and coil. Replace parts as needed. (22) = Wheel bearing service: (26) = Check the fuel tank, fuel cap and fuel lines for •...
Page 348 • (30) = Change the lubricant. See Part C: Recommended Inspect air parking brake chamber for leaks and Fluids and Lubricants on page 6-31. damage. Inspect lines and hoses for leaks, cracks, chaﬁng, etc. Also check all attachments for tightness, (31) = Front axle service: Re-pack upper kingpin roller wear, or damage.
Page 349 (33) = Clean and lubricate air brake automatic slack (38) = Estimated minimum. Actual mileage depends on adjuster. Check pushrod travel and auto adjustment fuel and oil consumed. operation. Have serviced if needed. (39) = If the vehicle has the Isuzu diesel engine and is (34) = Air brake chamber service: Check operation, used primarily for long trip, highway service, change mounting clamps, and air lines and check for leaks.
Page 350: Engine Oil Level Check
Part B: Owner Checks and Services Check the engine oil level and add the proper oil if ® necessary. See Engine Oil (Caterpillar Diesel Engine) on page 5-23 or Engine Oil (Gasoline Engine) on Listed in this part are owner checks and services ®...
Page 351: At Least Twice A Year
At Least Twice a Year Parking Brake Check Park on a fairly steep hill and hold the vehicle with the Wiper Blade Check parking brake only. This checks holding ability. See Parking Brake (With Hydraulic Brakes) on page 2-38 or Inspect wiper blades for wear, cracking, or Parking Brake (With Air Brakes) on page 2-41.
Page 352: Exhaust System Inspection
Automatic Transmission Shift Indicator Engine Cooling System Service Check Inspect the hoses and have them replaced if they are cracked, swollen, or deteriorated. Inspect all pipes, Check that the indicator points to the gear chosen. ﬁttings, and clamps; replace as needed. Clean the Steering Check outside of the radiator and air conditioning condenser.
Page 353 Windshield Wipers and Washers Check Glass, Mirrors, Lamps, and/or Reﬂectors Condition Check Check operation and condition of the wiper blades. Check the ﬂow of the washer spray. Look for broken, scratched, dirty, or damaged glass, mirrors, lamps, or reﬂectors that could reduce the view Defroster Check or visibility or cause injury.
Page 354: At Least Once A Year
Underbody Inspection At Least Once a Year Corrosive materials used for ice, snow removal, and Key Lock Cylinders Service dust control can collect on the underbody. If these materials are not removed, accelerated corrosion (rust) Lubricate the key lock cylinders with the lubricant can occur on underbody parts such as fuel lines, frame, speciﬁed in Part C.
Page 355: Part C: Recommended Fluids And Lubricants
Part C: Recommended Fluids and Usage Fluid/Lubricant ® Lubricants Engine Coolant See the Caterpillar Operation & ® (Caterpillar Maintenance Manual for engine Diesel Engine) coolant recommendations. Fluids and lubricants identiﬁed below by name, part 50/50 mixture of clean, drinkable number, or speciﬁcation can be obtained from your Engine Coolant ®...
Page 356 Usage Fluid/Lubricant Usage Fluid/Lubricant ® See the Allison Transmission SAE 75W-90 Synthetic Axle Automatic Operator’s Manual for correct Rear Axle and Lubricant for Medium Duty Trucks Transmission transmission ﬂuid. Rear Hubs (GM Part No. U.S. 89021675, in Canada 10953512). Multi-Purpose Lubricant, Superlube Key Lock (GM Part No.
Page 357: Part D: Maintenance Record
Part D: Maintenance Record After the scheduled services are performed, record the date, odometer reading and who performed the service, and any additional information from “Owner Checks and Services” on the following record pages. Also, you should retain all maintenance receipts. Miles/km Or Date Serviced By...
Page 358 Miles/km Or Date Serviced By Maintenance Record Hours 6-34...
Page 359 Miles/km Or Date Serviced By Maintenance Record Hours 6-35...
Page 360 Miles/km Or Date Serviced By Maintenance Record Hours 6-36...
Page 361: Customer Assistance Information
Section 7 Customer Assistance Information Customer Assistance and Information ....7-2 Reporting Safety Defects to Customer Satisfaction Procedure ......7-2 General Motors ...........7-9 Customer Assistance for Text Service Publications Ordering Information ..7-10 Telephone (TTY) Users ........7-3 Vehicle Data Recording and Privacy ....7-11 Customer Assistance Offices ......7-4 Vehicle Data Recording and Privacy GM Mobility Reimbursement Program ....7-5...
Page 362: Customer Assistance And Information
Oshawa by calling 1-800-263-3777 (English) or Your satisfaction and goodwill are important to 1-800-263-7854 (French). your dealer and to Chevrolet. Normally, any concerns We encourage you to call the toll-free number in order with the sales transaction or the operation of your to give your inquiry prompt attention.
Page 363: Customer Assistance For Text Telephone (Tty) Users
To assist customers who are deaf, hard of hearing, or venue for relief available to you. speech-impaired and who use Text Telephones (TTYs), Chevrolet has TTY equipment available at its Customer Assistance Center. Any TTY user in the U.S. can communicate with Chevrolet by dialing: 1-800-833-CHEV (2438).
Page 364: Customer Assistance Offices
Customer Assistance Offices Canada — Customer Assistance General Motors of Canada Limited Chevrolet encourages customers to call the toll-free Customer Communication Centre, CA1-163-005 number for assistance. However, if a customer wishes 1908 Colonel Sam Drive to write or e-mail, refer to the addresses below.
Page 365: Gm Mobility Reimbursement Program
GM Mobility Reimbursement Roadside Assistance Program Program GM Medium Duty truck’s Roadside Assistance provides stranded owner/operators with towing service for disabled GM Medium Duty trucks, during the base and/or engine warranty period, to the nearest authorized GM Medium Duty dealer. This service combines the efforts of trained telephone representatives with a network of GM Medium Duty truck services.
Page 366: Collision Damage Repair
Collision Damage Repair Aftermarket collision parts are also available. These are made by companies other than GM and may not have been tested for your vehicle. As a result, these If your vehicle is involved in a collision and it is damaged, parts may ﬁt poorly, exhibit premature have the damage repaired by a qualiﬁed technician using durability/corrosion problems, and may not perform...
Page 367: Insuring Your Vehicle
Insuring Your Vehicle If a Crash Occurs Protect your investment in your GM vehicle with Here is what to do if you are involved in a crash. comprehensive and collision insurance coverage. There • Try to relax and then check to make sure you are all are signiﬁcant differences in the quality of coverage right.
Page 368 • Managing the Vehicle Damage Repair Gather the important information you will need from the other driver. Things like name, address, phone Process number, driver’s license number, vehicle license plate, vehicle make, model and model year, Vehicle In the event that your vehicle requires damage repairs, Identiﬁcation Number (VIN), insurance company and GM recommends that you take an active role in its policy number, and a general description of the...
Page 369: Reporting Safety Defects
Reporting Safety Defects Reporting Safety Defects to the Canadian Government Reporting Safety Defects to the If you live in Canada, and you believe that your vehicle United States Government has a safety defect, notify Transport Canada immediately, in addition to notifying General Motors of If you believe that your vehicle has a defect which Canada Limited.
Page 370: Service Publications Ordering Information
Service Publications Ordering Current and Past Model Order Forms Information Technical Service Bulletins and Manuals are available for current and past model GM vehicles. To request Service Manuals an order form, specify year and model name of the vehicle. Service Manuals have the diagnosis and repair ORDER TOLL FREE: 1-800-551-4123 information on engines, transmission, axle suspension, brakes, electrical, steering, body, etc.
Page 371: Vehicle Data Recording And Privacy
Vehicle Data Recording and Event Data Recorders (Isuzu 7.8L L6 Engine) Privacy This vehicle has an Event Data Recorder (EDR). The main purpose of an EDR is to record, in certain crash or Vehicle Data Recording and Privacy near crash-like situations, such as an airbag deployment (Isuzu 7.8L L6 Engine) or hitting a road obstacle, data that will assist in understanding how a vehicle’s systems performed.
Page 372: Onstar ® (Isuzu 7.8L L6 Engine)
Navigation System To read data recorded by an EDR, special equipment is required, and access to the vehicle or the EDR is (Isuzu 7.8L L6 Engine) needed. In addition to the vehicle manufacturer, other parties, such as law enforcement, that have the special If your vehicle has a navigation system, use of the equipment, can read the information if they have system may result in the storage of destinations,...
Page 373 Antilock Brake System (ABS) ......4-5 Antilock Brake, System Warning Light ....3-34 Accessories and Modiﬁcations ......5-4 Antilock Brakes, Trailer System Warning Light ..3-34 Adding a Snow Plow or Similar Equipment ..4-23 Appearance Care Adding Equipment to Your Airbag-Equipped Aluminum or Chrome-Plated Wheels ....
Page 374: Checking Things Under The Hood
Audio System(s) ..........3-48 Capacities and Speciﬁcations ......5-109 Automatic Transmission Carbon Monoxide ........2-45, 4-16 Fluid ............5-43 Care of Operation ........... 2-29 Safety Belts ..........5-96 Center Console Storage Area ......2-53 Change Fuel Filter Warning Light ...... 3-44 Charging System Light ........
Page 375 Cleaning Customer Assistance Information (cont.) Aluminum or Chrome-Plated Wheels ....5-98 Customer Satisfaction Procedure ..... 7-2 Exterior Lamps/Lenses ......... 5-97 GM Mobility Reimbursement Program ....7-5 Fabric/Carpet ..........5-95 Reporting Safety Defects to General Motors ..7-9 Finish Care ..........5-97 Reporting Safety Defects to the Canadian Instrument Panel, Vinyl, and Other Plastic Government ..........
Page 376 Dome Lamps ..........3-16 Engine Door Air Cleaner/Filter ......... 5-39 Locks ............2-6 Alarm and Automatic Shutdown ..... 2-18 Power Door Locks ......... 2-7 Change Engine Oil Light ....... 3-38 Driving Check and Service Engine Soon Light .... 3-36 At Night ............. 4-13 Checks Before Operating ......
Page 377 Exhaust Brake Indicator Light ......3-40 Fuel (cont.) Exhaust Restrictor ........... 2-22 Gage ............3-43 Extender, Safety Belt ........1-28 Gasoline Octane ........... 5-7 Exterior Lamps ..........3-14 Gasoline Speciﬁcations ........5-7 Primary Filter and Water Separator ....5-79 Running Out of ........... 2-50 Running Out of Fuel ........
Page 378 Gage (cont.) Hood Speedometer ..........3-26 Checking Things Under ........ 5-22 Tachometer ..........3-26 Latches ............5-22 Transmission Temperature ......3-39 Horn ............... 3-6 Voltmeter Gage ........... 3-31 Hourmeter Gage ..........3-46 Gasoline How to Wear Safety Belts Properly ....1-16 Octane ............
Page 379 Light (cont.) Low Coolant Warning ........3-35 Lamps Low Oil Level ..........3-38 Dome ............3-16 Low Washer Fluid Warning ......3-42 Marker ............3-16 Malfunction Indicator ........3-36 Reading ............. 3-17 Power Take-Off ........... 3-42 Lap Belt ............1-27 Range Inhibit Warning Indicator .....
Page 380 Mirrors (cont.) Outside Manual Mirrors ........ 2-51 Maintenance, Replacement Parts ..... 5-115 Outside Power Mirrors ........2-51 Maintenance Schedule At Each Fuel Fill ......... 6-25 At Least Once a Year ........6-29 At Least Twice a Year ........6-26 Navigation System, Privacy ......7-12 How This Section is Organized .......
Page 381 Outlet Adjustment ..........3-23 Power (cont.) Outlets Steering Fluid ..........5-54 Accessory Power ......... 3-19 Windows ............2-9 Outside Power Take-Off Light ........3-42 Convex Mirrors ..........2-52 Power Take-Off (PTO) ........2-32 Heated Mirrors ..........2-52 Privacy ............7-11 Manual Mirrors ..........
Page 382 Reduced Engine Power Light ......3-41 Safety Belts (cont.) Remote Keyless Entry (RKE) System ....2-3 Safety Belt Use During Pregnancy ....1-26 Remote Keyless Entry (RKE) System, Safety Belts Are for Everyone ....... 1-11 Operation ............. 2-4 Safety Warnings and Symbols ......iii Replacement Parts, Maintenance .....
Page 383 Speciﬁcations, Capacities ....... 5-109 Tires (cont.) Speedometer ..........3-26 Wheel Alignment and Tire Balance ....5-86 Split Bench Seat ..........1-6 Wheel Loading ..........5-83 Starting Diesel Engine ........2-14 Wheel Replacement ........5-90 Starting the Gasoline Engine ......2-12 When It Is Time for New Tires ......
Page 384 Water in Fuel Warning Light ......3-44 What Fuel to Use ..........5-9 Vehicle Wheels Control ............4-3 Alignment and Tire Balance ......5-86 Damage Warnings ........... iv Front Bearings with Oil-Filled Hubs ....5-81 Loading ............4-21 Loading ............5-83 Symbols ............

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