2009 Chevrolet Express Owners Manual

rotating the tires. See Tire Pressure Monitor Operation on page 5-67.

Make sure the spare tire is stored securely. Push, pull, and then try to rotate or turn the tire. If it moves, tighten the cable. See Storing a Flat or Spare Tire and Tools on page 5-97. When It Is Time for New Tires Various factors, such as maintenance, temperatures, driving speeds, vehicle loading, and road conditions, influence when you need new tires.

One way to tell when it is time for new tires is to check the treadwear indicators, which appear when your tires have only 1/16 inch (1.6 mm) or less of tread remaining.

Some commercial truck tires, including Goodyear LT225/75R16 G949 RSA and Goodyear LT225/75R16
G933 RSD, may not have treadwear indicators. If the tires do not have treadwear indicators, replace the tires when the tread depth is down to 1/8 inch (3.2 mm) for the front tires, or 1/16 inch (1.6 mm) for the rear tires.

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You need new tires if any of the following statements are true: • You can see the indicators at three or more places

around the tire.

• You can see cord or fabric showing through the

tire’s rubber.

• The tread or sidewall is cracked, cut, or snagged

deep enough to show cord or fabric. • The tire has a bump, bulge, or split. • The tire has a puncture, cut, or other damage that

cannot be repaired well because of the size or location of the damage.

The rubber in tires degrades over time, even if they are not being used. This is also true for the spare tire, if your vehicle has one. Multiple conditions affect how fast this aging takes place, including temperatures, loading conditions, and inflation pressure maintenance. With proper care and maintenance tires will typically wear out before they degrade due to age. If you are unsure about the need to replace your tires as they get older, consult the tire manufacturer for more information.

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Buying New Tires GM has developed and matched specific tires for your vehicle. The original equipment tires installed on your vehicle, when it was new, were designed to meet General Motors Tire Performance Criteria Specification (TPC spec) system rating. If you need replacement tires, GM strongly recommends that you get tires with the same TPC Spec rating. This way, your vehicle will continue to have tires that are designed to give the same performance and vehicle safety, during normal use, as the original tires. GM’s exclusive TPC Spec system considers over a dozen critical specifications that impact the overall performance of your vehicle, including brake system performance, ride and handling, traction control, and tire pressure monitoring performance. GM’s TPC Spec number is molded onto the tire’s sidewall near the tire size. If the tires have an all-season tread design, the TPC spec number will be followed by a MS, for mud and snow. See Tire Sidewall Labeling on page 5-56 for additional information. GM recommends replacing tires in sets of four (or six if your vehicle has dual rear wheels). This is because uniform tread depth on all tires will help keep your vehicle performing most like it did when the tires were new. Replacing less than a full set of tires can affect the braking and handling performance of your vehicle. See Tire Inspection and Rotation on page 5-71 for information on proper tire rotation.

{ CAUTION:

Mixing tires could cause you to lose control while driving. If you mix tires of different sizes, brands, or types (radial and bias-belted tires) the vehicle may not handle properly, and you could have a crash. Using tires of different sizes, brands, or types may also cause damage to your vehicle. Be sure to use the correct size, brand, and type of tires on your vehicle’s wheels.

{ CAUTION:

If you use bias-ply tires on the vehicle, the wheel rim flanges could develop cracks after many miles of driving. A tire and/or wheel could fail suddenly, causing a crash. Use only radial-ply tires with the wheels on the vehicle.

If you must replace your vehicle’s tires with those that do not have a TPC Spec number, make sure they are the same size, load range, speed rating, and construction type (radial and bias-belted tires) as your vehicle’s original tires. Vehicles that have a tire pressure monitoring system could give an inaccurate low-pressure warning if non-TPC Spec rated tires are installed on your vehicle. Non-TPC Spec rated tires may give a low-pressure warning that is higher or lower than the proper warning level you would get with TPC Spec rated tires. See Tire Pressure Monitor System on page 5-66. Your vehicle’s original equipment tires are listed on the Tire and Loading Information label. See Loading the Vehicle on page 4-19, for more information about the Tire and Loading Information label and its location on your vehicle.

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Different Size Tires and Wheels If you add wheels or tires that are a different size than your original equipment wheels and tires, this could affect the way your vehicle performs, including its braking, ride and handling characteristics, stability, and resistance to rollover. Additionally, if your vehicle has electronic systems such as anti-lock brakes, rollover airbags, traction control, and electronic stability control, the performance of these systems can be affected.

{ CAUTION:

If you add different sized wheels, your vehicle may not provide an acceptable level of performance and safety if tires not recommended for those wheels are selected. You may increase the chance that you will crash and suffer serious injury. Only use GM specific wheel and tire systems developed for your vehicle, and have them properly installed by a GM certified technician.

See Buying New Tires on page 5-74 and Accessories and Modifications on page 5-3 for additional information.

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Uniform Tire Quality Grading Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example: Treadwear 200 Traction AA Temperature A The following information relates to the system developed by the United States National Highway Traffic Safety Administration (NHTSA), which grades tires by treadwear, traction, and temperature performance. This applies only to vehicles sold in the United States. The grades are molded on the sidewalls of most passenger car tires. The Uniform Tire Quality Grading (UTQG) system does not apply to deep tread, winter-type snow tires, space-saver, or temporary use spare tires, tires with nominal rim diameters of 10 to 12 inches (25 to 30 cm), or to some limited-production tires. While the tires available on General Motors passenger cars and light trucks may vary with respect to these grades, they must also conform to federal safety requirements and additional General Motors Tire Performance Criteria (TPC) standards.

Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one and a half (1.5) times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices, and differences in road characteristics and climate. Traction – AA, A, B, C The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire’s ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.

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Temperature – A, B, C The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law. It should be noted that the temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.

Wheel Alignment and Tire Balance The tires and wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance. Adjustments to wheel alignment and tire balancing will not be necessary on a regular basis. However, if you notice unusual tire wear or your vehicle pulling to one side or the other, the alignment might need to be checked. If you notice your vehicle vibrating when driving on a smooth road, the tires and wheels might need to be rebalanced. See your dealer/retailer for proper diagnosis.

Wheel Replacement Replace any wheel that is bent, cracked, or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts and wheel nuts should be replaced. If the wheel leaks air, replace it (except some aluminum wheels, which can sometimes be repaired). See your dealer/retailer if any of these conditions exist.

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Your dealer/retailer will know the kind of wheel you need. Each new wheel should have the same load-carrying capacity, diameter, width, offset and be mounted the same way as the one it replaces. If you need to replace any of the wheels, wheel bolts, wheel nuts or Tire Pressure Monitor System (TPMS) sensors, replace them only with new GM original equipment parts. This way, you will be sure to have the right wheel, wheel bolts, wheel nuts, and TPMS sensors for the vehicle.

{ CAUTION:

Using the wrong replacement wheels, wheel bolts, or wheel nuts on your vehicle can be dangerous. It could affect the braking and handling of your vehicle, make your tires lose air and make you lose control. You could have a collision in which you or others could be injured. Always use the correct wheel, wheel bolts, and wheel nuts for replacement.

Notice: The wrong wheel can also cause problems with bearing life, brake cooling, speedometer or odometer calibration, headlamp aim, bumper height, vehicle ground clearance, and tire or tire chain clearance to the body and chassis. Whenever a wheel, wheel bolt or wheel nut is replaced on a dual wheel setup, check the wheel nut torque after 100, 1,000 and 6,000 miles (160, 1 600 and 10 000 km) of driving. For proper torque, see “Wheel Nut Torque” under Capacities and Specifications on page 5-114. See Changing a Flat Tire on page 5-82 for more information. Used Replacement Wheels

{ CAUTION:

Putting a used wheel on the vehicle is dangerous. You cannot know how it has been used or how far it has been driven. It could fail suddenly and cause a crash. If you have to replace a wheel, use a new GM original equipment wheel.

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Tire Chains

{ CAUTION:

If your vehicle has dual wheels or P245/70R17 or LT245/75R16 size tires, do not use tire chains. They can damage your vehicle because there is not enough clearance. Tire chains used on a vehicle without the proper amount of clearance can cause damage to the brakes, suspension, or other vehicle parts. The area damaged by the tire chains could cause you to lose control of your vehicle and you or others may be injured in a crash. Use another type of traction device only if its manufacturer recommends it for use on your vehicle and tire size combination and road conditions. Follow that manufacturer’s instructions.

CAUTION:

(Continued)

CAUTION:

(Continued)

To help avoid damage to your vehicle, drive slowly, readjust, or remove the device if it is contacting your vehicle, and do not spin the vehicle’s wheels. If you do find traction devices that will fit, install them on the rear tires.

If your vehicle does not have dual

Notice: wheels and has a tire size other than P245/70R17 or LT245/75R16, use tire chains only where legal and only when you must. Use chains that are the proper size for your tires. Install them on the tires of the rear axle. Do not use chains on the tires of the front axle. Tighten them as tightly as possible with the ends securely fastened. Drive slowly and follow the chain manufacturer’s instructions. If you can hear the chains contacting your vehicle, stop and retighten them. If the contact continues, slow down until it stops. Driving too fast or spinning the wheels with chains on will damage your vehicle.

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If a Tire Goes Flat It is unusual for a tire to blowout while you are driving, especially if you maintain your vehicle’s tires properly. If air goes 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: If a front tire fails, the flat tire creates a drag that pulls the vehicle toward that side. Take your foot off the accelerator pedal and grip the steering wheel firmly. Steer to maintain lane position, and then gently brake to a stop well out of the traffic lane. A rear blowout, particularly on a curve, acts much like a skid and may require the same correction you would use in a skid. In any rear blowout remove your foot from the accelerator pedal. Get the vehicle under control by steering the way you want the vehicle to go. It may be very bumpy and noisy, but you can still steer. Gently brake to a stop, well off the road if possible.

{ CAUTION:

Lifting a vehicle and getting under it to do maintenance or repairs is dangerous without the appropriate safety equipment and training. If a jack is provided with the vehicle, it is designed only for changing a flat tire. If it is used for anything else, you or others could be badly injured or killed if the vehicle slips off the jack. If a jack is provided with the vehicle, only use it for changing a flat tire.

If a tire goes flat, the next part shows how to use the jacking equipment to change a flat tire safely.

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Changing a Flat Tire If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on the hazard warning flashers. See Hazard Warning Flashers on page 3-6.

{ CAUTION:

Changing a tire can be dangerous. The vehicle can slip off the jack and roll over or fall on you or other people. You and they could be badly injured or even killed. Find a level place to change your tire. To help prevent the vehicle from moving:

1. Set the parking brake firmly. 2. Put the shift lever in P (Park).

CAUTION:

(Continued)

CAUTION:

(Continued)

3. Turn off the engine and do not restart while

the vehicle is raised.

4. Do not allow passengers to remain in the

vehicle.

To be even more certain the vehicle will not move, you should put blocks at the front and rear of the tire farthest away from the one being changed. That would be the tire, on the other side, at the opposite end of the vehicle.

When the vehicle has a flat tire (B), use the following example as a guide to assist you in the placement of wheel blocks (A).

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A. Wheel Block B. Flat Tire The following information explains how to use the jack and change a tire.

Removing the Spare Tire and Tools If you have a cargo van or a passenger van, the equipment you will need is located in the passenger side rear corner of the vehicle.

Remove the retaining wing bolt and lift it off of the mounting bracket. If you have a van with the 15-passenger seating arrangement, the equipment you will need is secured on the rear floor of the passenger side of the vehicle.

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To access the equipment, remove the retaining wing bolt and lift it out of the mounting bracket.

The tools you will be using include the jack (A), jack handle (B), hoist extension (C), jack handle extension (D), and the wheel wrench (E). The spare tire is mounted in the rear underbody of the vehicle. You will use the hoist extension, the jack handle extensions and the wheel wrench to remove the underbody-mounted spare tire.

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To lower the spare tire from the vehicle:

A. Spare Tire B. Tire/Wheel Retainer C. Hoist Cable D. Hoist Assembly

E. Hoist Shaft F. Jack Handle and Hoist Extensions

G. Wheel Wrench

1. Assemble the wheel wrench (G) to one or two of

the jack handle extensions and the hoist extension. Insert the hoist extension end through the hole in the rear bumper.

2. Be sure the hoist extension end connects to the hoist shaft (E). The chiseled end of the extension is used to lower the spare tire.

3. Turn the wheel wrench counterclockwise to lower the spare tire to the ground. Continue to turn the wheel wrench until the spare tire can be pulled out from under the vehicle. If the spare tire does not lower to the ground, the secondary latch is engaged causing the tire not to lower. See Secondary Latch System on page 5-94.

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Removing the Flat Tire and Installing the Spare Tire If your vehicle has plastic wheel nut caps, loosen them by turning the wheel wrench counterclockwise. The wheel nut caps are designed to remain with the center cap. Remove the center cap. If the wheel has a smooth center piece, place the chisel end of the wheel wrench in the slot on the wheel and gently pry it out. 1. Do a safety check before proceeding. See Changing

a Flat Tire on page 5-82 for more information.

2. Loosen all the wheel nuts with the wheel wrench.

Do not remove them yet.

4. When the tire has been lowered, pull the tire toward you so you can reach the tire retainer and pull it up through the wheel opening. If you have a vehicle which was completed from a cab and chassis, refer to the information from body supplier/installer. The spare tire is a full-size tire, like the other tires on the vehicle.

5. Put the spare tire near the flat tire.

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3. Assemble the jack and tools:

Front Flat: Assemble the jack (A) together with the jack handle (B), 1 or 2 jack handle extensions (D) and the wheel wrench (E). Rear Flat: Assemble the jack (A) together with the jack handle (B), 2 jack handle extensions (D), and the wheel wrench (E).

Front Position

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Front Position

Rear Position

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{ CAUTION:

Getting under a vehicle when it is jacked up is dangerous. If the vehicle slips off the jack you could be badly injured or killed. Never get under a vehicle when it is supported only by a jack.

{ CAUTION:

Rear Alternative Position (Diesel Vehicles)

4. Position the jack under the vehicle as shown.

The front position jacking point is on the frame. The rear position jacking point is on the rear axle. If the exhaust system interferes in the jack location in the rear axle, such as in Diesel vehicles, place the jack (A) on the rear axle between the axle housing and the shock absorber bracket in order to avoid any interference with the exhaust pipe (B).

Raising your vehicle with the jack improperly positioned can damage the vehicle and even make the vehicle fall. To help avoid personal injury and vehicle damage, be sure to fit the jack lift head into the proper location before raising the vehicle.

5. Raise the vehicle by turning the wheel wrench clockwise. Raise the vehicle far enough off the ground so there is enough room for the spare tire to fit.

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6. Remove all the

wheel nuts.

{ CAUTION:

Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if needed, to get all the rust or dirt off. See Changing a Flat Tire on page 5-82.

7. Take flat tire off of the mounting surface.

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8. Remove any rust or dirt

from the wheel bolts, mounting surfaces and spare wheel.

9. Put the wheel nuts

back on with the rounded end of the nuts toward the wheel. Tighten each wheel nut by hand until the wheel is held against the hub.

{ CAUTION:

Never use oil or grease on bolts or nuts because the nuts might come loose. The vehicle’s wheel could fall off, causing a crash.

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10. Lower the vehicle by turning the jack handle counterclockwise. Lower the jack completely.

{ CAUTION:

{ CAUTION:

Wheel nuts that are not tight can work loose. If all the nuts on a wheel come off, the wheel can come off the vehicle, causing a crash. All wheel nuts must be properly tightened. Follow the rules in this section to be sure they are.

If wheel studs are damaged, they can break. If all the studs on a wheel broke, the wheel could come off and cause a crash. If any stud is damaged because of a loose-running wheel, it could be that all of the studs are damaged. To be sure, replace all studs on the wheel. If the stud holes in a wheel have become larger, the wheel could collapse in operation. Replace any wheel if its stud holes have become larger or distorted in any way. Inspect hubs and hub-piloted wheels for damage. Because of loose running wheels, piloting pad damage may occur and require replacement of the entire hub, for proper centering of the wheels. When replacing studs, hubs, wheel nuts or wheels, be sure to use GM original equipment parts.

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{ CAUTION:

Wheel nuts that are improperly or incorrectly tightened can cause the wheels to become loose or come off. The wheel nuts should be tightened with a torque wrench to the proper torque specification after replacing. Follow the torque specification supplied by the aftermarket manufacturer when using accessory locking wheel nuts. See Capacities and Specifications on page 5-114 for original equipment wheel nut torque specifications.

Improperly tightened wheel nuts can

Notice: lead to brake pulsation and rotor damage. To avoid expensive brake repairs, evenly tighten the wheel nuts in the proper sequence and to the proper torque specification. See Capacities and Specifications on page 5-114 for the wheel nut torque specification.

11. Use the wheel wrench to tighten the nuts firmly.

Turn the wheel wrench clockwise and in a crisscross sequence as shown.

12. Put the wheel cover or the center cap and plastic

wheel nut caps back on. Remove any wheel blocks. Have a technician check the wheel nut tightness of all wheels with a torque wrench after the first 100 miles (160 km) and then 1,000 miles (1600 km) after that. Repeat this service whenever you have a tire removed or serviced. See Capacities and Specifications on page 5-114 for more information.

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Secondary Latch System Your vehicle has an underbody-mounted tire hoist assembly equipped with a secondary latch system. It is designed to stop the spare tire from suddenly falling off the vehicle if the cable holding the spare tire is damaged. For the secondary latch to work, the tire must be stowed with the valve stem pointing down. See Storing a Flat or Spare Tire and Tools on page 5-97
for instructions on storing the spare tire correctly.

To release the spare tire from the secondary latch:

{ CAUTION:

Someone standing too close during the procedure could be injured by the jack. If the spare tire does not slide off the jack completely, make sure no one is behind you or on either side of you as you pull the jack out from under the spare.

{ CAUTION:

Before beginning this procedure read all the instructions. Failure to read and follow the instructions could damage the hoist assembly and you and others could get hurt. Read and follow the instructions listed next.

1. Check under the

vehicle to see if the cable end is visible. If the cable is not visible, start this procedure at Step 6.

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2. Turn the hoist extension counterclockwise until

approximately 6 inches (15 cm) of cable is exposed.

3. Attach the jack handle/jack handle extension and

wheel wrench to the jack.

4. Place the jack under the vehicle, ahead of the rear

bumper. Position the center lift point of the jack under the center of the spare tire and turn the handle clockwise to raise the jack until it lifts the secondary latch spring.

5. Keep raising the jack until the spare tire stops

moving upward and is held firmly in place. This lets you know that the secondary latch has released. The spare tire is now balancing on the jack.

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8. Tilt the retainer at the end of the cable and pull it through the wheel opening. Pull the tire out from under the vehicle.

If you drive away before the spare tire or

Notice: secondary latch system cable has been reinstalled, you could damage your vehicle. Always reinstall this cable before driving your vehicle. 9. If the cable is hanging under the vehicle, turn the

wheel wrench in the hoist shaft hole in the bumper clockwise to raise the cable back up.

Have the hoist assembly inspected as soon as you can. You will not be able to store a spare or flat tire using the hoist assembly until it has been repaired or replaced. To continue changing the flat tire, return to Step 4 of Removing the Flat Tire and Installing the Spare Tire on page 5-86.

6. Lower the jack by turning the wheel wrench

counterclockwise. Keep lowering the jack until the spare tire slides off the jack or is hanging by the cable.

7. Disconnect the jack handle from the jack and

carefully remove the jack. Use one hand to push against the spare while firmly pulling the jack out from under the spare tire with the other hand. If the spare tire is hanging from the cable, assembly the wheel wrench onto the hoist extension and insert the chisel end of the hoist extension into the hoist shaft hole above the bumper. Turn the wheel wrench counterclockwise to lower the spare the rest of the way.

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Storing a Flat or Spare Tire and Tools

{ CAUTION:

Storing a jack, a tire, or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place.

1. Put the tire on the ground at the rear of the vehicle

with the valve stem pointed down.

2. Pull the retaining bar through the center of the

wheel, making sure it is properly attached.

3. Pull the wheel toward the rear of the vehicle,

keeping the cable tight.

4. Put the chisel end of the hoist extension on an angle through the hole in the rear door frame, above the bumper.

5. Raise the tire fully against the underside of the vehicle. Continue turning the wheel wrench until the tire is secure and the cable is tight. The spare tire hoist cannot be overtightened.

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Spare Tire This vehicle, when new, may have had a fully-inflated spare tire. A spare tire may lose air over time, so check its inflation pressure regularly. See Inflation - Tire Pressure on page 5-64 and Loading the Vehicle on page 4-19 for information regarding proper tire inflation and loading the vehicle. For instruction on how to remove, install or store a spare tire, see Removing the Flat Tire and Installing the Spare Tire on page 5-86
and Storing a Flat or Spare Tire and Tools on page 5-97. After installing the spare tire on the vehicle, you should stop as soon as possible and make sure the spare is correctly inflated. The spare tire is made to perform well at speeds up to 70 mph (112 km/h) at the recommended inflation pressure, so you can finish your trip. Have the damaged or flat road tire repaired or replaced as soon as you can and installed back onto the vehicle. This way, a spare tire will be available in case you need it again. Do not mix tires and wheels of different sizes, because they will not fit. Keep the spare tire and its wheel together.

6. Make sure the tire is stored securely. Push, pull (A),

and then try to turn (B) the tire. If the tire moves, use the wheel wrench to tighten the cable. You will hear two clicks when the tire is up all the way.

7. Return the jacking equipment to the proper location.

Secure the items and replace the jack cover.

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Appearance Care

Interior Cleaning The vehicle’s interior will continue to look its best if it is cleaned often. Although not always visible, dust and dirt can accumulate on the upholstery. Dirt can damage carpet, fabric, leather, and plastic surfaces. Regular vacuuming is recommended to remove particles from the upholstery. It is important to keep the upholstery from becoming and remaining heavily soiled. Soils should be removed as quickly as possible. The vehicle’s interior may experience extremes of heat that could cause stains to set rapidly. Lighter colored interiors may require more frequent cleaning. Use care because newspapers and garments that transfer color to home furnishings may also transfer color to the vehicle’s interior. When cleaning the vehicle’s interior, only use cleaners specifically designed for the surfaces being cleaned. Permanent damage may result from using cleaners on

surfaces for which they were not intended. Use glass cleaner only on glass. Remove any accidental over-spray from other surfaces immediately. To prevent over-spray, apply cleaner directly to the cleaning cloth. Notice: Using abrasive cleaners when cleaning glass surfaces on the vehicle, could scratch the glass and/or cause damage to the rear window defogger. When cleaning the glass on the vehicle, use only a soft cloth and glass cleaner. Many cleaners contain solvents that may become concentrated in the vehicle’s breathing space. Before using cleaners, read and adhere to all safety instructions on the label. While cleaning the vehicle’s interior, maintain adequate ventilation by opening the vehicle’s doors and windows. Dust may be removed from small buttons and knobs using a small brush with soft bristles. Products that remove odors from the vehicle’s upholstery and clean the vehicle’s glass can be obtained from your dealer/retailer.

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Do not clean the vehicle using: • A knife or any other sharp object to remove a soil

from any interior surface.

• A stiff brush. It can cause damage to the vehicle’s

interior surfaces.

• Heavy pressure or aggressive rubbing with a

cleaning cloth. Use of heavy pressure can damage the interior and does not improve the effectiveness of soil removal.

• Laundry detergents or dishwashing soaps with degreasers can leave residue that streaks and attracts dirt. For liquid cleaners, about 20 drops per gallon (3.78 L) of water is a good guide. Use only mild, neutral-pH soaps.

• Too much cleaner that saturates the upholstery. • Organic solvents such as naptha, alcohol, etc. that

can damage the vehicle’s interior.

Fabric/Carpet Use a vacuum cleaner with a soft brush attachment frequently to remove dust and loose dirt. A canister vacuum with a beater bar in the nozzle may only be used on floor carpet and carpeted floor mats. For any soil, always try to remove it first with plain water or club soda. Before cleaning, gently remove as much of the soil as possible using one of the following techniques: • For liquids: gently blot the remaining soil with a paper

towel. Allow the soil to absorb into the paper towel until no more can be removed.

• For solid dry soils: remove as much as possible and

then vacuum.

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To clean: 1. Saturate a lint-free, clean white cloth with water or

club soda.

2. Wring the cloth to remove excess moisture. 3. Start on the outside edge of the soil and gently rub toward the center. Continue cleaning, using a clean area of the cloth each time it becomes soiled. 4. Continue to gently rub the soiled area until the

cleaning cloth remains clean.

5. If the soil is not completely removed, use a mild

soap solution and repeat the cleaning process that was used with plain water.

If any of the soil remains, a commercial fabric cleaner or spot lifter may be necessary. When a commercial upholstery cleaner or spot lifter is to be used, test a small hidden area for colorfastness first. If the locally cleaned area gives any impression that a ring formation may result, clean the entire surface. After the cleaning process has been completed, a paper towel can be used to blot excess moisture from the fabric or carpet.

Instrument Panel, Vinyl, and Other Plastic Surfaces A soft cloth dampened with water may be used to remove dust. If a more thorough cleaning is necessary, a clean soft cloth dampened with a mild soap solution can be used to gently remove dust and dirt. Never use spot lifters or removers on plastic surfaces. Many commercial cleaners and coatings that are sold to preserve and protect soft plastic surfaces may permanently change the appearance and feel of the interior and are not recommended. Do not use silicone or wax-based products, or those containing organic solvents to clean the vehicle’s interior because they can alter the appearance by increasing the gloss in a non-uniform manner. Some commercial products may increase gloss on the instrument panel. The increase in gloss may cause annoying reflections in the windshield and even make it difficult to see through the windshield under certain conditions.

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Care of Safety Belts Keep belts clean and dry.

{ CAUTION:

Do not bleach or dye safety belts. It may severely weaken them. In a crash, they might not be able to provide adequate protection. Clean safety belts only with mild soap and lukewarm water.

Weatherstrips Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth. During very cold, damp weather frequent application may be required. See Recommended Fluids and Lubricants on page 6-15.

Washing Your Vehicle The best way to preserve the vehicle’s finish is to keep it clean by washing it often. Notice: Certain cleaners contain chemicals that can damage the emblems or nameplates on the vehicle. Check the cleaning product label. If it states that it should not be used on plastic parts, do not use it on the vehicle or damage may occur and it would not be covered by the warranty. Do not wash the vehicle in direct sunlight. Use a car washing soap. Do not use cleaning agents that are petroleum based or that contain acid or abrasives, as they can damage the paint, metal or plastic on the vehicle. Approved cleaning products can be obtained from your dealer/retailer. Follow all manufacturers’ directions regarding correct product usage, necessary safety precautions and appropriate disposal of any vehicle care product. Rinse the vehicle well, before washing and after to remove all cleaning agents completely. If they are allowed to dry on the surface, they could stain. Dry the finish with a soft, clean chamois or an all-cotton towel to avoid surface scratches and water spotting.

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High pressure car washes may cause water to enter the vehicle. Avoid using high pressure washes closer than 12 inches (30 cm) to the surface of the vehicle. Use of power washers exceeding 1,200 psi (8 274 kPa) can result in damage or removal of paint and decals.

Cleaning Exterior Lamps/Lenses Use only lukewarm or cold water, a soft cloth and a car washing soap to clean exterior lamps and lenses. Follow instructions under Washing Your Vehicle on page 5-102.

Finish Care Occasional waxing or mild polishing of the vehicle by hand may be necessary to remove residue from the paint finish. Approved cleaning products can be obtained from your dealer/retailer. If the vehicle has a basecoat/clearcoat paint finish, the clearcoat gives more depth and gloss to the colored basecoat. Always use waxes and polishes that are non-abrasive and made for a basecoat/clearcoat paint finish.

Notice: Machine compounding or aggressive polishing on a basecoat/clearcoat paint finish may damage it. Use only non-abrasive waxes and polishes that are made for a basecoat/clearcoat paint finish on the vehicle. 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., can damage the vehicle’s finish if they remain on painted surfaces. Wash the vehicle as soon as possible. If necessary, use non-abrasive cleaners that are marked safe for painted surfaces to remove foreign matter. Exterior painted surfaces are subject to aging, weather and chemical fallout that can take their toll over a period of years. To help keep the paint finish looking new, keep the vehicle garaged or covered whenever possible. Protecting Exterior Bright Metal Parts Bright metal parts should be cleaned regularly to keep their luster. Washing with water is all that is usually needed. However, chrome polish may be used on chrome or stainless steel trim, if necessary. Use special care with aluminum trim. To avoid damaging protective trim, never use auto or chrome polish, steam or caustic soap to clean aluminum. A coating of wax, rubbed to high polish, is recommended for all bright metal parts.

5-103

Windshield and Wiper Blades Clean the outside of the windshield with glass cleaner. Clean the rubber blades using a lint free cloth or paper towel soaked with windshield washer fluid or a mild detergent. Wash the windshield thoroughly when cleaning the blades. Bugs, road grime, sap, and a buildup of vehicle wash/wax treatments may cause wiper streaking. Replace the wiper blades if they are worn or damaged. Wipers can be damaged by: • Extreme dusty conditions • Sand and salt • Heat and sun • Snow and ice, without proper removal

Aluminum Wheels Notice: Using strong soaps, chemicals, abrasive polishes, cleaners, brushes, or cleaners that contain acid on aluminum or chrome-plated wheels, could damage the surface of the wheel(s). The repairs would not be covered by the warranty. Use only approved cleaners on aluminum or chrome-plated wheels. Keep the wheels clean using a soft clean cloth with mild soap and water. Rinse with clean water. After rinsing thoroughly, dry with a soft clean towel. A wax may then be applied. Notice: Using chrome polish on aluminum wheels could damage the wheels. The repairs would not be covered by the warranty. Use chrome polish on chrome wheels only.

5-104

The surface of these wheels is similar to the painted surface of the vehicle. Do not use strong soaps, chemicals, abrasive polishes, abrasive cleaners, cleaners with acid, or abrasive cleaning brushes on them because the surface could be damaged. Do not use chrome polish on aluminum wheels. Notice: Driving the vehicle through an automatic car wash that has silicone carbide tire cleaning brushes, could damage the aluminum or chrome-plated wheels. The repairs would not be covered by the warranty. Never drive a vehicle equipped with aluminum or chrome-plated wheels through an automatic car wash that uses silicone carbide tire cleaning brushes.

Tires To clean the tires, use a stiff brush with tire cleaner. Notice: Using petroleum-based tire dressing products on the vehicle may damage the paint finish and/or tires. When applying a tire dressing, always wipe off any overspray from all painted surfaces on the vehicle.

Sheet Metal Damage If the vehicle is damaged and requires sheet metal repair or replacement, make sure the body repair shop applies anti-corrosion material to parts repaired or replaced to restore corrosion protection. Original manufacturer replacement parts will provide the corrosion protection while maintaining the vehicle warranty.

Finish Damage Any stone chips, fractures or deep scratches in the finish should be repaired right away. Bare metal will corrode quickly and may develop into major repair expense. Minor chips and scratches can be repaired with touch-up materials available from your dealer/retailer. Larger areas of finish damage can be corrected in your dealer’s/ retailer’s body and paint shop.

5-105

Underbody Maintenance Chemicals used for ice and snow removal and dust control can collect on the underbody. If these are not removed, corrosion and rust can develop on the underbody parts such as fuel lines, frame, floor pan, and exhaust system even though they have corrosion protection. At least every spring, flush these materials from the underbody with plain water. Clean any areas where mud and debris can collect. Dirt packed in close areas of the frame should be loosened before being flushed. Your dealer/retailer or an underbody car washing system can do this.

Chemical Paint Spotting Some weather and atmospheric conditions can create a chemical fallout. Airborne pollutants can fall upon and attack painted surfaces on the vehicle. This damage can take two forms: blotchy, ring-shaped discolorations, and small, irregular dark spots etched into the paint surface. Although no defect in the paint job causes this, we will repair, at no charge to the owner, the surfaces of new vehicles damaged by this fallout condition within 12 months or 12,000 miles (20 000 km) of purchase, whichever occurs first.

5-106

Vehicle Identification

Vehicle Identification Number (VIN)

This is the legal identifier for the vehicle. It appears on a plate in the front corner of the instrument panel, on the driver side. It can be seen through the windshield from outside the vehicle. The VIN also appears on the Certification/Tire and Service Parts labels and the certificates of title and registration. Engine Identification The eighth character in the VIN is the engine code. This code helps identify the vehicle’s engine, specifications, and replacement parts. See “Engine Specifications” under Capacities and Specifications on page 5-114 for the vehicle’s engine code.

Service Parts Identification Label This label is on the front passenger door frame. It is very helpful if parts need to be ordered. The label has the following information: • Vehicle Identification Number (VIN) • Model designation • Paint information • Production options and special equipment Do not remove this label from the vehicle. Electrical System

Add-On Electrical Equipment Notice: Do not add anything electrical to the vehicle unless you check with your dealer/retailer first. Some electrical equipment can damage the vehicle and the damage would not be covered by the vehicle’s warranty. Some add-on electrical equipment can keep other components from working as they should.

Add-on equipment can drain the vehicle battery, even if the vehicle is not operating. The vehicle has an airbag system. Before attempting to add anything electrical to the vehicle, see Servicing Your Airbag-Equipped Vehicle on page 1-73.

Headlamp Wiring The headlamp wiring is protected by fuses in the engine compartment fuse block. An electrical overload will cause the lamps to flicker on and off, or in some cases to remain off. If this happens, have your headlamp wiring checked right away.

Windshield Wiper Fuses The windshield wiper motor is protected by a circuit breaker and a fuse. If the motor overheats due to heavy snow, etc., the wiper will stop until the motor cools. Although the circuit is protected from electrical overload, overload due to heavy snow, etc., may cause wiper linkage damage. Always clear ice and heavy snow from the windshield before using the windshield wipers. If the overload is caused by some electrical problem and not snow, etc., be sure to get it fixed.

5-107

Fuses and Circuit Breakers The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of fires caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating.

Floor Console Fuse Block The floor console fuse block is located under the driver seat.

5-108

Fuse

Usage

Fuse

Usage

10

11

12
13
14
15
16

Climate Control 2 (HVAC) Compass Ignition Switch, Theft Deterrent System Module (PK3) Upfitter Courtesy Lamps Climate Control 1 (HVAC) Empty Instrument Panel Cluster Audio System, Chime Auxiliary Park Lamp Auxiliary Trailer Back-up Lamps Remote Function Actuator, Tire Pressure Monitor (TPM) Climate Control (HVAC) Controls Trailer Park Lamps Front Park Lamps Taillamps, Back-up Lamps Empty

17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

32

33

Steering Wheel Sensor Outside Rearview Mirror Switch Empty Empty Rear Defogger Outside Rearview Mirror Heater Empty Empty Cargo Door Unlock Rear Door Lock Front Door Lock Rear Passenger Door Unlock Upfitter Park Lamps Front Passenger Door Unlock Driver Door Unlock Airbag System, Automatic Occupant Sensing (AOS) System Right Rear Park Lamp

5-109

Fuse

34
35
36
37
38

Usage Left Rear Park Lamp Upfitter Auxiliary 2 (J-Case) Upfitter Auxiliary 1 (J-Case) Rear Blower (J-Case) Empty (J-Case)

Relays

Usage

39
40
41

42

43

44

Run (High Current Micro) Park Lamps (High Current Micro) Empty (Mini Micro) Upfitter Auxiliary 2 (High Current ISO Relay) Retained Accessory Power (RAP) (High Current Micro) Rear Defogger (High Current Micro)

Circuit Breaker

Usage

45
46

Power Window Power Seats

Engine Compartment Fuse Block The fuse block is located in the engine compartment on the driver side of the vehicle. Notice: Spilling liquid on any electrical components on the vehicle may damage it. Always keep the covers on any electrical component.

5-110

Fuse

Usage

Left High-Beam Headlamp Fuel Pump Empty Fuel Heater (Diesel)

Fuse

Usage

Right High-Beam Headlamp Empty Left Low-Beam Headlamp Right Stoplamp, Trailer Turn Signal

5-111

Fuse

Usage

Fuse

Usage

10

11

12
13

14

15

16
17
18
19
20
21
22
23
24
25
26
27
28
29

Right Low-Beam Headlamp Daytime Running Lamps 2 (DRL) Fuel System Control Module Ignition (Gas) Daytime Running Lamps 1 (DRL) Auxiliary Stoplamp Fuel Operated Heater Module (Diesel) Fuel System Control Module Battery (Gas) Left Stoplamp, Trailer Turn Signal Canister Vent Solenoid (Gas) Empty Empty Body Control Module 1
Special Equipment Option (SEO) Body Control Module 4
Body Control Module 6
Empty Body Control Module 7
Body Control Module 3
Body Control Module 5
Empty Empty

5-112

30
31
32
33
34
35
36
37

38

39
40
41
42
43

44

45
46

47

48
49
50

Instrument Panel Cluster Empty Brake Switch Auxiliary Power Outlet Airbag Trailer Wiring Steering Wheel Sensor (Gas) Body Control Module 2
Cigarette Lighter, Data Link Controller Windshield Wiper Empty Windshield Washer Empty Horn Transmission Control Module Battery Empty Oxygen Sensor 1 (Gas) Transmission Control Module Ignition Engine Control Module Ignition Mass Airflow Sensor, Canister Vent Engine Control Module, Powertrain

Fuse

Usage

51
52
53
54
55
56
57
58
59

60

61

62
63
64

65

Transmission Even Ignition Injectors (Gas) Glow Plug Module (Diesel) Engine Control Module Battery Odd Ignition Injectors (Gas) Oxygen Sensor 2 (Gas) Air Conditioning Compressor Fan Clutch (Diesel) V6 Fuel Injectors (Gas) Antilock Brake System Module (J-Case) Antilock Brake System Motor (J-Case) Trailer Wiring (J-Case) Empty Starter Solenoid (J-Case) Engine Control Module (ECM), Powertrain (Diesel) (J-Case)

Fuse

66
67
77

Relays

68
69

70

71

72
73

74

75
76

Usage Front Blower (J-Case) Empty Body BEC (Mega Fuse)

Usage

Empty Run, Crank (High Current Micro) Windshield Wiper High (High Current Micro) Windshield Wiper (High Current Micro) Fuel Pump (Mini Micro) Crank (High Current Micro) Air Conditioning Compressor (Mini Micro) Fan Clutch (Diesel) (Solid State) Powertrain (High Current Micro)

5-113

Capacities and Specifications If your vehicle has the DURAMAX Diesel engine, see the DURAMAX Diesel manual for more information. The following approximate capacities are given in English and metric conversions. See Recommended Fluids and Lubricants on page 6-15 for more information.

Application

Air Conditioning Refrigerant R134a

Cooling System

4.3L V6
4.8L V8, 5.3L V8
6.0L V8

Cooling System with Rear Heat

4.3L V6
4.8L V8, 5.3L V8
6.0L V8

Engine Oil with Filter

4.3L V6
4.8L V8, 5.3L V8, 6.0L V8

5-114

Capacities

English

Metric

For the air conditioning system refrigerant charge amount, see the refrigerant caution label located under the hood. See your dealer/retailer for more

information.

10.0 qt 12.4 qt 13.8 qt

13.0 qt 15.4 qt 17.0 qt

4.5 qt 6.0 qt

9.5 L 11.8 L 13.1 L

12.3 L 14.6 L 16.1 L

4.3 L 5.7 L

Application

Fuel Tank

Capacities

English

Standard Tank (Passenger and Cargo) Standard Tank (Cab and Chassis) Optional Tank (Cab and Chassis)* * 159 inch (4 039 mm) wheelbase or 177 inch (4 496 mm) wheelbase only

31.0 gal 33.0 gal 57.0 gal

Metric

117.3 L 124.9 L 215.7 L

Transmission Fluid

4-SPD 4L60-E 4-SPD 4L80-E (Standard and Heavy Duty)

Wheel Nut Torque All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck fluid level after filling.

5.0 qt 7.7 qt 140 ft lb

4.7 L 7.3 L 190 Y

Engine

VIN Code

Transmission

Engine Specifications

4.3L V6
4.8L V8
5.3L V8
6.0L V8

Automatic Automatic Automatic Automatic

Spark Plug Gap 0.060 in (1.52 mm) 0.040 in (1.01 mm) 0.040 in (1.01 mm) 0.040 in (1.01 mm)

5-115

✍ NOTES

5-116

Section 6

Maintenance Schedule

Maintenance Schedule ......................................6-2
Introduction ...................................................6-2
Maintenance Requirements ..............................6-2
Your Vehicle and the Environment ....................6-2
Using the Maintenance Schedule ......................6-3
Scheduled Maintenance ...................................6-4
Additional Required Services ............................6-7
Maintenance Footnotes

(Gasoline Engine) .......................................6-9
Owner Checks and Services ..........................6-11

At the First 100, 1,000 and 6,000 Miles

(160, 1 600 and 10 000 km) ..........................6-11
At Each Fuel Fill ..........................................6-11
At Least Once a Month .................................6-12
At Least Once a Year ...................................6-12
Recommended Fluids and Lubricants ...............6-15
Maintenance Replacement Parts .....................6-17
Engine Drive Belt Routing ..............................6-18
Maintenance Record .....................................6-19

6-1

Maintenance Requirements Notice: Maintenance intervals, checks, inspections, replacement parts, and recommended fluids and lubricants as prescribed in this manual are necessary to keep this vehicle in good working condition. Any damage caused by failure to follow scheduled maintenance might not be covered by the vehicle warranty.

Your Vehicle and the Environment Proper vehicle maintenance not only helps to keep the vehicle in good working condition, but also helps the environment. All recommended maintenance is important. Improper vehicle maintenance can even affect the quality of the air we breathe. Improper fluid levels or the wrong tire inflation can increase the level of emissions from the vehicle. To help protect the environment, and to keep the vehicle in good condition, be sure to maintain the vehicle properly.

Maintenance Schedule

Introduction This maintenance section applies to vehicles with a gasoline engine. For diesel engine vehicles, see the maintenance schedule section in the DURAMAX Diesel manual. Important: Keep engine oil at the proper level and change as recommended.

Have you purchased the GM Protection Plan? The Plan supplements the vehicle warranties. See the Warranty and Owner Assistance booklet or your dealer/retailer for details.

6-2

Using the Maintenance Schedule We want to help keep this vehicle in good working condition. But we do not know exactly how you will drive it. You might drive very short distances only a few times a week. Or you might drive long distances all the time in very hot, dusty weather. You might use the vehicle in making deliveries. Or you might drive it to work, to do errands, or in many other ways. Because of all the different ways people use their vehicles, maintenance needs vary. You might need more frequent checks and replacements. So please read the following and note how you drive. If you have any questions on how to keep the vehicle in good condition, see your dealer/retailer. This schedule is for vehicles that: • carry passengers and cargo within recommended

limits on the Tire and Loading Information label. See Loading the Vehicle on page 4-19.

• are driven on reasonable road surfaces within legal

• use the recommended fuel. See Gasoline Octane

driving limits.

on page 5-6.

The services in Scheduled Maintenance on page 6-4
should be performed when indicated. See Additional Required Services on page 6-7 and Maintenance Footnotes (Gasoline Engine) on page 6-9 for further information.

{ CAUTION:

Performing maintenance work on a vehicle can be dangerous. In trying to do some jobs, you can be seriously injured. Do your own maintenance work only if you have the required know-how and the proper tools and equipment for the job. If you have any doubt, see your dealer/retailer to have a qualified technician do the work. See Doing Your Own Service Work on page 5-4.

Some maintenance services can be complex. So, unless you are technically qualified and have the necessary equipment, have your dealer/retailer do these jobs. When you go to your dealer/retailer for service, trained and supported service technicians will perform the work using genuine parts. To purchase service information, see Service Publications Ordering Information on page 7-16. Owner Checks and Services on page 6-11 tells what should be checked, when to check it, and what can easily be done to help keep the vehicle in good condition.

6-3

The proper replacement parts, fluids, and lubricants to use are listed in Recommended Fluids and Lubricants on page 6-15 and Maintenance Replacement Parts on page 6-17. When the vehicle is serviced, make sure these are used. All parts should be replaced and all necessary repairs done before you or anyone else drives the vehicle. We recommend the use of genuine parts from your dealer/retailer.

Scheduled Maintenance This maintenance section applies to vehicles with a gasoline engine. For diesel engine vehicles, see the maintenance schedule section in the DURAMAX® Diesel manual. When the CHANGE ENGINE OIL SOON message displays, service is required for the vehicle. Have the vehicle serviced as soon as possible within the next 600 miles (1 000 km). It is possible that, if driving under the best conditions, the engine oil life system may not indicate that vehicle service is necessary for over a year. However, the engine oil and filter must be changed at least once a year and at this time the system must be reset. Your dealer/retailer has trained service technicians who will perform this work using genuine parts and reset the system.

If the engine oil life system is ever reset accidentally, service the vehicle within 3,000 miles (5 000 km) since the last service. Remember to reset the oil life system whenever the oil is changed. See Engine Oil Life System on page 5-18 for information on the Engine Oil Life System and resetting the system. When the CHANGE ENGINE OIL SOON message appears, certain services, checks, and inspections are required. Required services are described in the following for “Maintenance I” and “Maintenance II.” Generally, it is recommended that the first service be Maintenance I, the second service be Maintenance II, and then alternate Maintenance I and Maintenance II thereafter. However, in some cases, Maintenance II may be required more often. Maintenance I — Use Maintenance I if the CHANGE ENGINE OIL SOON message displays within 10 months since the vehicle was purchased or Maintenance II was performed. Maintenance II — Use Maintenance II if the previous service performed was Maintenance I. Always use Maintenance II whenever the message displays 10 months or more since the last service or if the message has not come on at all for one year.

6-4

Scheduled Maintenance

Service

Maintenance I Maintenance II

Change engine oil and filter. See Engine Oil on page 5-15. Reset oil life system. See Engine Oil Life System on page 5-18. An Emission Control Service.

Lubricate chassis components. See footnote #.

Visually check for any leaks or damage. See footnote (j).

Inspect engine air cleaner filter. If necessary, replace filter. See Engine Air Cleaner/Filter on page 5-20. See footnote (l).

Rotate tires and check inflation pressures and wear. See Tire Inspection and Rotation on page 5-71 and “Tire Wear Inspection” in At Least Once a Month on page 6-12.

Inspect brake system. See footnote (a).

Check engine coolant and windshield washer fluid levels and add fluid as needed.

•

• •

•

•

•

•

• •

•

•

•

•

6-5

Scheduled Maintenance (cont’d) Service

Maintenance I Maintenance II

Perform any needed additional services. See “Additional Required Services” in this section.

•

Inspect suspension and steering components. See footnote (b).

Inspect engine cooling system. See footnote (c).

Inspect wiper blades. See footnote (d).

Inspect restraint system components. See footnote (e).

Lubricate body components. See footnote (f).

Check transmission fluid level and add fluid as needed.

Inspect shields, vehicles with GVWR above 10,000 lbs (4 536 kg) only. See footnote (g).

Inspect throttle system. See footnote (m).

•

• • • • • •

•

•

6-6

Additional Required Services This maintenance section applies to vehicles with a gasoline engine. If your vehicle has a diesel engine, see the maintenance schedule section in the DURAMAX® Diesel manual. The following services should be performed at the first maintenance service (I or II) after the indicated miles (kilometers) shown for each item.

Service and Miles (Kilometers)

Inspect fuel system for damage or leaks.

Inspect exhaust system for loose or damaged components.

Replace engine air cleaner filter. See Engine Air Cleaner/Filter on page 5-20.

Change automatic transmission fluid and filter (severe service). See footnote (h).

Change automatic transmission fluid and filter (normal service).

Additional Required Services 75,000

25,000
(40 000)

50,000
(80 000)

(120 000)

100,000
(160 000)

125,000
(200 000)

150,000
(240 000)

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

6-7

Additional Required Services (cont’d)

Service and Miles (Kilometers)

25,000
(40 000)

50,000
(80 000)

75,000

(120 000)

100,000
(160 000)

125,000
(200 000)

150,000
(240 000)

•

•

•

•

•

•

•

•

•

•

Four-wheel drive: Change transfer case fluid (severe service). See footnotes (o) and (p).

Four-wheel drive: Change transfer case fluid (normal service). See footnote (o).

Replace spark plugs and inspect spark plug wires. An Emission Control Service.

Engine cooling system service (or every five years, whichever occurs first). An Emission Control Service. See footnote (i).

Inspect engine accessory drive belt. An Emission Control Service. See footnote (n).

Inspect evaporative control system. An Emission Control Service. See footnotes † and (k).

6-8

Maintenance Footnotes (Gasoline Engine) This maintenance section applies to vehicles with a gasoline engine. For diesel engine vehicles, see the maintenance schedule section in the DURAMAX® Diesel manual. † The U.S. Environmental Protection Agency or the California Air Resources Board has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of the vehicle’s useful life. We, however, urge that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded. # Lubricate the front suspension, kingpin bushings, steering linkage, and rear driveline center splines. (a) Visually inspect brake lines and hoses for proper hook-up, binding, leaks, cracks, chafing, etc. Inspect disc brake pads for wear and rotors for surface condition. Inspect other brake parts, including calipers, parking brake, etc. (b) Visually inspect front and rear suspension and steering system for damaged, loose, or missing parts, signs of wear, or lack of lubrication. Inspect power steering lines and hoses for proper hook-up, binding, leaks, cracks, chafing, etc.

(c) Visually inspect hoses and have them replaced if they are cracked, swollen, or deteriorated. Inspect all pipes, fittings, and clamps; replace with genuine parts as needed. To help ensure proper operation, a pressure test of the cooling system and pressure cap and cleaning the outside of the radiator and air conditioning condenser is recommended at least once a year. (d) Inspect wiper blades for wear, cracking, or contamination. Clean the windshield and wiper blades, if contaminated. Replace wiper blades that are worn or damaged. See Windshield Wiper Blade Replacement on page 5-54 and Windshield and Wiper Blades on page 5-104 for more information. (e) Make sure the safety belt reminder light and safety belt assemblies are working properly. Look for any other loose or damaged safety belt system parts. If you see anything that might keep a safety belt system from doing its job, have it repaired. Have any torn or frayed safety belts replaced. Also see Checking the Restraint Systems on page 1-75. (f) Lubricate all key lock cylinders, hood hinges, hood prop rod pivot, hood latch assembly, secondary latch, pivots, spring anchor, release pawl, rear compartment hinges, latches, locks, fuel door hinge, and any moving seat hardware. More frequent lubrication may be required when exposed to a corrosive environment. Applying silicone grease on weatherstrips with a clean cloth will make them last longer, seal better, and not stick or squeak.

6-9

(g) Vehicles with Gross Vehicle Weight Rating (GVWR) above 10,000 lbs (4 536 kg) only: Inspect shields for damage or looseness. Adjust or replace as required. This is a Noise Emission Control Service. Applicable to vehicles sold in the United States and recommended for vehicles sold in Canada. (h) Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions:

− In heavy city traffic where the outside temperature

regularly reaches 90°F (32°C) or higher.

− In hilly or mountainous terrain. − When doing frequent trailer towing. − Uses such as found in taxi, police, or delivery

service.

(i) Drain, flush, and refill cooling system. This service can be complex; you should have your dealer/retailer perform this service. See Engine Coolant on page 5-25
for what to use. Inspect hoses. Clean radiator, condenser, pressure cap, and filler neck. Pressure test the cooling system and pressure cap. (j) A fluid loss in any vehicle system could indicate a problem. Have the system inspected and repaired and the fluid level checked. Add fluid if needed.

(k) Inspect system. Check all fuel and vapor lines and hoses for proper hook-up, routing, and condition. Check that the purge valve works properly, if equipped. Replace as needed. (l) If driving regularly under dusty conditions, inspect the filter at each engine oil change. (m) Check system for interference or binding and for damaged or missing parts. Replace parts as needed. Replace any components that have high effort or excessive wear. Do not lubricate accelerator or cruise control cables. (n) Visually inspect belt for fraying, excessive cracks, or obvious damage. Replace belt if necessary. (o) Check vent hose at transfer case for kinks and proper installation. Check to be sure vent hose is unobstructed, clear, and free of debris. During any maintenance, if a power washer is used to clean mud and dirt from the underbody, care should be taken to not directly spray the transfer case output seals. High pressure water can overcome the seals and contaminate the transfer case fluid. Contaminated fluid will decrease the life of the transfer case and should be replaced. (p) Severe Service: Change transfer case fluid if the vehicle is mainly used for trailer towing or driven in city traffic, wet environment, or high ambient temperatures.

6-10

Owner Checks and Services These owner checks and services should be performed at the intervals specified to help ensure vehicle safety, dependability, and emission control performance. Your dealer/retailer can assist with these checks and services. Be sure any necessary repairs are completed at once. Whenever any fluids or lubricants are added to the vehicle, make sure they are the proper ones, as shown in Recommended Fluids and Lubricants on page 6-15.

At the First 100, 1,000 and 6,000 Miles (160, 1 600 and 10 000 km) For vehicles with dual wheels, check dual wheel nut torque. For proper torque, see Capacities and Specifications on page 5-114.

It is important to check the engine oil

At Each Fuel Fill It is important to perform these underhood checks at each fuel fill. Engine Oil Level Check Notice: regularly and keep it at the proper level. Failure to keep the engine oil at the proper level can cause damage to the engine not covered by the vehicle warranty. Check the engine oil level and add the proper oil if necessary. See Engine Oil on page 5-15. Engine Coolant Level Check Check the engine coolant level and add DEX-COOL® coolant mixture if necessary. See Engine Coolant on page 5-25. Windshield Washer Fluid Level Check Check the windshield washer fluid level in the windshield washer fluid reservoir and add the proper fluid if necessary.

6-11

At Least Once a Month Tire Inflation Check Inspect the vehicle’s tires and make sure they are inflated to the correct pressures. Do not forget to check the spare tire. See Inflation - Tire Pressure on page 5-64. Check to make sure the spare tire is stored securely. See Changing a Flat Tire on page 5-82. Tire Wear Inspection Tire rotation may be required for high mileage highway drivers prior to the Engine Oil Life System service notification. Check the tires for wear and, if necessary, rotate the tires. See Tire Inspection and Rotation on page 5-71.

At Least Once a Year Starter Switch Check

{ CAUTION:

When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be sure there is enough

room around the vehicle.

2. Firmly apply both the parking brake and the regular

brake. See Parking Brake on page 2-28. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts.

3. Try to start the engine in each gear. The vehicle

should start only in P (Park) or N (Neutral). If the vehicle starts in any other position, contact your dealer/retailer for service.

6-12

Automatic Transmission Shift Lock Control System Check

{ CAUTION:

When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be sure there is enough room around the vehicle. It should be parked on a level surface.

2. Firmly apply the parking brake. See Parking Brake

on page 2-28. Be ready to apply the regular brake immediately if the vehicle begins to move.

3. With the engine off, turn the ignition to ON/RUN, but do not start the engine. Without applying the regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer/retailer for service.

Ignition Transmission Lock Check While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position. • The ignition should turn to LOCK/OFF only

when the shift lever is in P (Park).

• The ignition key should come out only in

LOCK/OFF.

Contact your dealer/retailer if service is required.

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Parking Brake and Automatic Transmission P (Park) Mechanism Check

{ CAUTION:

When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move.

Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake. • To check the parking brake’s holding ability:

With the engine running and the transmission in N (Neutral), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only.

• To check the P (Park) mechanism’s holding ability:

With the engine running, shift to P (Park). Then release the parking brake followed by the regular brake.

Contact your dealer/retailer if service is required. Underbody Flushing Service At least every spring, use plain water to flush any corrosive materials from the underbody. Take care to clean thoroughly any areas where mud and other debris can collect.

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Recommended Fluids and Lubricants