2006 GMC Savana Owners Manual

tires (including the spare) are properly inflated.

See Tires on page 5-52 and Inflation - Tire Pressure on page 5-59 for more information on proper tire inflation.

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Tire Inspection and Rotation Tires should be rotated every 5,000 to 8,000 miles (8 000 to 13 000 km). Any time you notice unusual wear, rotate your tires as soon as possible and check wheel alignment. Also check for damaged tires or wheels. See When It Is Time for New Tires on page 5-63 and Wheel Replacement on page 5-67 for more information. Make sure the spare tire is stored securely. Push, pull, and then try to rotate or turn the tire. If it moves, use the ratchet/wheel wrench to tighten the cable. See Changing a Flat Tire on page 5-70. If your vehicle has dual rear wheels, also see Dual Tire Operation on page 5-60. The purpose of regular rotation is to achieve more uniform wear for all tires on the vehicle. The first rotation is the most important. See Scheduled Maintenance (Gasoline Engine) on page 6-4.

Single Rear Wheels

If your vehicle has single rear wheels, always use the correct rotation patterns shown here when rotating your vehicle’s tires. Do not include the spare tire in the tire rotation, if the spare tire/wheel assembly does not match your vehicle’s road tires and wheels in size and type.

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{CAUTION:

Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after a time. The wheel could come off and cause an accident. When you change a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, you can 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 5-70.

Dual Rear Wheels

If your vehicle has dual rear wheels, always use one of the correct rotation patterns shown here when rotating your tires. When you install dual wheels, be sure that vent holes in the inner and outer wheels on each side are lined up. After the tires have been rotated, adjust the front and rear inflation pressures as shown on the Tire and Loading Information label. See Loading Your Vehicle on page 4-30. Make certain that all wheel nuts are properly tightened. See “Wheel Nut Torque” under Capacities and Specifications on page 5-98.

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When It Is Time for New Tires

One way to tell when it is time for new tires is to check the treadwear indicators, which will appear when your tires have only 1/16 inch (1.6 mm) or less of tread remaining. Some commercial truck tires may not have treadwear indicators.

You need a new tire 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.

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.

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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 by the tire manufacturer. 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 5-53 for additional information.

{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 your 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 your 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. Your vehicle’s original equipment tires are listed on the Tire and Loading Information Label. This label is attached to the vehicle’s center pillar (B-pillar). See Loading Your Vehicle on page 4-30, for more information about the Tire and Loading Information Label.

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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 may 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, antilock brakes; 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 5-63 and Accessories and Modifications on page 5-3 for additional information.

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, 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 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.

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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. Warning: The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.

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. Warning: 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.

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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 may need to be checked. If you notice your vehicle vibrating when driving on a smooth road, your tires and wheels may need to be rebalanced. See your dealer 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 if any of these conditions exist. Your dealer 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 your wheels, wheel bolts or wheel nuts, replace them only with new GM original equipment parts. This way, you will be sure to have the right wheel, wheel bolts and wheel nuts for your 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 5-98.

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See Changing a Flat Tire on page 5-70 for more information. Used Replacement Wheels

Tire Chains

{CAUTION:

{CAUTION:

Putting a used wheel on your 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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If your vehicle has dual wheels or P235/75R16, P245/75R16 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. 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 wheels

Notice: and is equipped with a tire size other than P235/75R16, P245/75R16 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.

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 will create 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. The jack provided with your vehicle 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. Use the jack provided with your vehicle only 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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CAUTION:

(Continued)

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 your vehicle has a flat tire, use the following example as a guide to assist you in the placement of wheel blocks.

Changing a Flat Tire If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on your vehicle’s hazard warning flashers. See Hazard Warning Flashers on page 3-5 for more information.

{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 PARK (P). 3. Turn off the engine and do not restart

while the vehicle is raised.

4. Do not allow passengers to remain in

the vehicle.

CAUTION:

(Continued)

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The following information will tell you next 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.

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

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To lower the spare tire from the vehicle, do the following:

1. Attach the wheel

wrench and ratchet, with the DOWN side facing you. The wheel wrench has a socket end and a flat chisel end. Note that there is an UP side and a DOWN side on the ratchet.

The tools you will be using include the jack (A), jack handle extension (B), jack handle (C), wheel wrench (D), and the ratchet (E). The spare tire is stored underneath the rear of your vehicle. You will use the wheel wrench (D) and the ratchet (E) to lower the spare tire from the vehicle.

2. Put the flat chisel end of the wheel wrench on an angle through the hole between the body and the bumper. Be sure the flat end connects into the hoist shaft.

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3. Turn the ratchet counterclockwise to lower the spare tire to the ground. 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 5-79.

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 the body supplier/installer. The spare tire is a full-size tire, like the other tires on your vehicle.

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Rear Position

Rear Flat: Assemble the jack (A) together with the jack handle (B), jack handle extension (C) and ratchet (D) as shown. Be sure that the ratchet has the UP mark facing you. To assemble the jack handle and jack handle extension, use the art and text following.

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. With the DOWN side facing you, use the ratchet and wheel wrench to loosen all the wheel nuts. Do not remove them yet.

2. Assemble the jack and tools for a front or rear flat

as follows:

Front Position

Front Flat: Assemble the jack (A) together with the jack handle (B) and ratchet (C) as shown. Be sure that the ratchet has the UP mark facing you.

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Connect the jack handle (B) and jack handle extension (C) together and press the retention clip (arrow) so it engages.

Front Position

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3. Position the jack under the vehicle as shown.

{CAUTION:

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.

Rear Position

{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.

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4. Raise the vehicle by turning the ratchet clockwise.

Make sure the UP mark faces you. Raise the vehicle far enough off the ground so there is enough room for the spare tire to fit.

{CAUTION:

5. Remove all the

wheel nuts.

6. Take flat tire off of the mounting surface.

Rust or dirt on the wheel, or on the parts to which it is fastened, can make the wheel nuts become loose after a time. The wheel could come off and cause an accident. When you change a wheel, remove any rust or dirt from the places where the wheel attaches to the vehicle. In an emergency, you can 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.

7. Remove any rust or dirt

from the wheel bolts, mounting surfaces and spare wheel.

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{CAUTION:

{CAUTION:

Never use oil or grease on studs or nuts. If you do, the nuts might come loose. Your wheel could fall off, causing a serious accident.

8. 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.

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

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Incorrect wheel nuts or improperly tightened wheel nuts can cause the wheel to come loose and even come off. This could lead to an accident. Be sure to use the correct wheel nuts. If you have to replace them, be sure to get new GM original equipment wheel nuts. Stop somewhere as soon as you can and have the nuts tightened with a torque wrench to the proper torque specification. See Capacities and Specifications on page 5-98 for wheel nut torque specification.

Improperly tightened wheel nuts can lead

Notice: 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 5-98 for the wheel nut torque specification.

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

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

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

wheel nut caps back on. Remove any wheel blocks.

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 5-82
for instructions on storing the spare tire correctly.

{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 below.

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To release the spare tire from the secondary latch, do the following:

2. Turn the wrench counterclockwise until

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

{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 the spare.

3. Connect the jack handle (C) and jack handle

extension (B) together and press the retention clip (arrow) so it engages.

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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4. Attach the jack handle/jack handle extension to the jack. With the UP mark facing you, slide the ratchet onto the end of the jack handle extension. The set-up should look like the picture above.

8. 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, slide the ratchet onto the wheel wrench and insert the wheel wrench into the hoist shaft hole above the bumper. Turn the wheel wrench counterclockwise to lower the spare the rest of the way. Be sure the DOWN mark on the ratchet is facing you.

9. 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. 10. 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 5-74.

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5. 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.

6. 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.

7. Lower the jack by turning the ratchet

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

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.

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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. With the UP side facing you, attach the ratchet to

the wheel wrench.

5. Put the flat end of the wheel wrench on an

angle through the hole in the rear door frame, above the bumper.

6. Raise the tire fully against the underside of the

vehicle. Continue turning the ratchet until the tire is secure and the cable is tight. The spare tire hoist cannot be overtightened.

Spare Tire Your vehicle, when new, 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 5-59 and Loading Your Vehicle on page 4-30
for information regarding proper tire inflation and loading your vehicle. For instructions on how to remove, install or store a spare tire, see Removing the Flat Tire and Installing the Spare Tire on page 5-74 and Storing a Flat or Spare Tire and Tools on page 5-82. After installing the spare tire on your vehicle, you should stop as soon as possible and make sure the spare is correctly inflated. Have the damaged or flat road tire repaired or replaced as soon as you can and installed back onto your vehicle. This way, a spare tire will be available in case you need it again. Your vehicle may have a different size spare tire than the road tires — those originally installed on your vehicle. This spare tire was developed for use on your vehicle, so it’s all right to drive on it. If your vehicle has a spare tire that does not match your vehicle’s original road tires and wheels in size and type, do not include the spare in the tire rotation.

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

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

8. Return the jacking equipment to the proper location.

Secure the items and replace the jack cover.

Appearance Care

Cleaning the Inside of Your Vehicle Your vehicle’s interior will continue to look its best if it is cleaned often. Although not always visible, dust and dirt can accumulate on your upholstery. Dirt can damage carpet, fabric, leather, and plastic surfaces. Regular vacuuming is recommended to remove particles from your upholstery. It is important to keep your upholstery from becoming and remaining heavily soiled. Soils should be removed as quickly as possible. Your 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 your home furnishings may also transfer color to your vehicle’s interior. When cleaning your 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.

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If you use abrasive cleaners when cleaning

Notice: glass surfaces on your vehicle, you could scratch the glass and/or cause damage to the rear window defogger. When cleaning the glass on your vehicle, use only a soft cloth and glass cleaner. Many cleaners contain solvents that may become concentrated in your vehicle’s breathing space. Before using cleaners, read and adhere to all safety instructions on the label. While cleaning your vehicle’s interior, maintain adequate ventilation by opening your vehicle’s doors and windows. Dust may be removed from small buttons and knobs using a small brush with soft bristles. Your GM dealer has a product for cleaning your vehicle’s glass. Should it become necessary, you can also obtain a product from your GM dealer to remove odors from your vehicle’s upholstery. Do not clean your vehicle using the following cleaners or techniques: • Never use a knife or any other sharp object to

remove a soil from any interior surface.

• Never use a stiff brush. It can cause damage to

your vehicle’s interior surfaces.

• Never apply heavy pressure or rub aggressively

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

• Use only mild, neutral-pH soaps. Avoid laundry

detergents or dishwashing soaps with degreasers. Using too much soap will leave a residue that leaves streaks and attracts dirt. For liquid cleaners, about 20 drops per gallon (3.78 L) of water is a good guide.

• Do not heavily saturate your upholstery while

cleaning.

• Damage to your vehicle’s interior may result from the use of many organic solvents such as naptha, alcohol, etc.

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 soils, always try to remove them 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.

To clean, use the following instructions: 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.

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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 your interior and are not recommended. Do not use silicone or wax-based products, or those containing organic solvents to clean your 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 your 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.

Care of Safety Belts Keep belts clean and dry.

{CAUTION:

Do not bleach or dye safety belts. If you do, 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 (Gasoline Engine) on page 6-13.

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Washing Your Vehicle The paint finish on the vehicle provides beauty, depth of color, gloss retention, and durability. The best way to preserve the vehicle’s finish is to keep it clean by washing it often with lukewarm or cold water. Do not wash the vehicle in the direct rays of the sun. Use a car washing soap. Do not use strong soaps or chemical detergents. Be sure to rinse the vehicle well, removing all soap residue completely. GM-approved cleaning products can be obtained from your dealer. See Vehicle Care/Appearance Materials on page 5-91. Do not use cleaning agents that are petroleum based, or that contain acid or abrasives. All cleaning agents should be flushed promptly and not allowed to dry on the surface, or they could stain. Dry the finish with a soft, clean chamois or an all-cotton towel to avoid surface scratches and water spotting. High pressure car washes may cause water to enter the vehicle.

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 5-87.

Finish Care Occasional waxing or mild polishing of your vehicle by hand may be necessary to remove residue from the paint finish. You can get GM-approved cleaning products from your dealer. See Vehicle Care/Appearance Materials on page 5-91. If your 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 your 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 your 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.

5-87

Exterior painted surfaces are subject to aging, weather and chemical fallout that can take their toll over a period of years. You can help to keep the paint finish looking new by keeping your 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, you may use chrome polish 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.

Windshield and Wiper Blades If the windshield is not clear after using the windshield washer, or if the wiper blade chatters when running, wax, sap, or other material may be on the blade or windshield. Clean the outside of the windshield with a glass cleaning liquid or powder and water solution. The windshield is clean if beads do not form when it is rinsed with water. Grime from the windshield will stick to the wiper blades and affect their performance. Clean the blade by wiping vigorously with a cloth soaked in full-strength windshield washer solvent. Then rinse the blade with water. Check the wiper blades and clean them as necessary; replace blades that look worn.

5-88

If you use strong soaps, chemicals,

Aluminum Wheels Notice: abrasive polishes, cleaners, brushes, or cleaners that contain acid on aluminum or chrome-plated wheels, you could damage the surface of the wheel(s). The repairs would not be covered by your warranty. Use only GM-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 your warranty. Use chrome polish on chrome wheels only. 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.

If you drive your vehicle through an

Notice: automatic car wash that has silicone carbide tire cleaning brushes, you could damage the aluminum or chrome-plated wheels. The repairs would not be covered by your warranty. Never drive a vehicle equipped with aluminum or chrome-plated wheels through an automatic car wash that uses silicone carbide tire cleaning brushes. Do not take the vehicle through an automatic car wash that has silicone carbide tire cleaning brushes. These brushes can also damage the surface of these wheels.

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

5-89

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 or an underbody car washing system can do this for you.

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, GM 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.

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 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 GM dealer. Larger areas of finish damage can be corrected in your GM dealer’s body and paint shop.

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.

5-90

Vehicle Care/Appearance Materials

Description

Usage

Description

Polishing Cloth Wax-Treated Tar and Road Oil Remover Chrome Cleaner and Polish White Sidewall Tire Cleaner Vinyl Cleaner

Glass Cleaner

Chrome and Wire Wheel Cleaner

Finish Enhancer

Swirl Remover Polish

Usage

Cleaner Wax

Foaming Tire Shine Low Gloss

Wash Wax Concentrate

Spot Lifter

Odor Eliminator

Interior and exterior polishing cloth. Removes tar, road oil, and asphalt. Use on chrome or stainless steel. Removes soil and black marks from whitewalls. Cleans vinyl. Removes dirt, grime, smoke and fingerprints. Removes dirt and grime from chrome wheels and wire wheel covers. Removes dust, fingerprints, and surface contaminants. Spray on and wipe off. Removes swirl marks, fine scratches, and other light surface contamination.

Removes light scratches and protects finish. Cleans, shines, and protects in one step. No wiping necessary. Medium foaming shampoo. Cleans and lightly waxes. Biodegradable and phosphate free. Quickly removes spots and stains from carpets, vinyl, and cloth upholstery. Odorless spray odor eliminator used on fabrics, vinyl, leather and carpet.

5-91

Vehicle Identification

Vehicle Identification Number (VIN)

This is the legal identifier for your vehicle. It appears on a plate in the front corner of the instrument panel, on the driver’s side. You can see it if you look through the windshield from outside your vehicle. The VIN also appears on the Vehicle Certification 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 will help you identify your vehicle’s engine, specifications, and replacement parts.

Service Parts Identification Label You will find this label on the front passenger door frame. It is very helpful if you ever need to order parts. On this label you will find the following: • VIN • Model designation • Paint information • Production options and special equipment Be sure that this label is not removed from the vehicle.

5-92

Electrical System

Add-On Electrical Equipment Notice: Don’t add anything electrical to your vehicle unless you check with your dealer first. Some electrical equipment can damage your vehicle and the damage wouldn’t be covered by your warranty. Some add-on electrical equipment can keep other components from working as they should. Your vehicle has an air bag system. Before attempting to add anything electrical to your vehicle, see Servicing Your Airbag-Equipped Vehicle on page 1-79.

Headlamp Wiring The headlamp wiring is protected by a circuit breaker in the lamp switch. 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.

Fuses and Circuit Breakers The wiring circuits in your 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.

5-93

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

Fuse

Usage

Spare Outside Rear View Mirror Courtesy Lamp/SEO Left Rear Stop/Turn Signal

5-94

Fuse

Usage

10
11
12
13
14
15
16
17
18
19
20
21
22
32
33

Cargo Locks Right Rear Stop/Turn Signal Driver Locks Stop/Center High Mounted Stop Lamp Climate Control 1
Climate Control Brakes Heated Mirror/Defogger Right Rear Blower Driver Turn Mirror Door Locks Upfitter Park Not Available Left Rear Park Lamp Pass Turn Mirror Right Rear Park Lamp Trailer Park Lamp Front Park Lamp Auxilary 1
Auxilary 2

Engine Compartment Fuse Block The fuse block is located in the engine compartment on the driver’s side of the vehicle.

Relays

Usage

23
24
25
26
27
28
29
30
31

Window Residual Accessory Power Auxiliary Right Rear Defogger Courtesy Lamp Cargo Unlock Driver Unlock Park Lamp Door Locks Passenger Unlock

Circuit Breaker

Usage

34

Power Window

Fuse

Usage

Radio Battery Powertrain Control Module Battery (Gas), FOH, Engine Control Module, Transmission Control Module Battery (Diesel) Left Rear Turn Lamp Right Rear Turn Lamp

5-95

Fuse

Usage

Fuse

Usage

10

11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

Back-up Lamps Trailer Wiring Ignition 0
Stoplamp Rear Defogger/Heated Mirror Right Daytime Running Lamp/Turn Signal Left Daytime Running Lamp/Turn Signal Truck Body Control Module 4
Fuel Pump Trailer Hazard Flashers Horn Truck Body Control Module 3
Trailer Stop/Turn Signal Truck Body Control Module 2
Truck Body Control Module Remote Function Actuator Engine 2 (Gas), Spare (Diesel) Ignition E Engine 1
Truck Body Control Module Ignition 1
Spare (Gas), Fuel Heater (Diesel) Inside Rearview Mirror

5-96

27

28

29
30
31
32

33

34

35

36

37

38

39

40
41
42
43

Crankcase Brake Transmission Shift Interlock System Auxiliary Power Outlets Cigarette Lighter Instrument Panel Cluster Air Conditioning Spare (Gas), Engine Control Module (Diesel) Canister Vent Solenoid (Gas), Rear Fog Lamps (Diesel) Spare Brake Transmission Shift Interlock, Vehicle Back-Up Airbag Powertrain Control Module Ignition 1
(Gas), Engine Control Module, Transmission Control Module, Glow Plug Control Module Ignition 1
(Diesel) Oxygen Sensor B (Gas), Spare (Diesel) Oxygen Sensor A Windshield Wipers Right Headlamp - Low Beam Left Headlamp - Low Beam

Fuse

Usage

Relays

Usage

44
45

46

47

48

49
50
51
52

63

64

Left Headlamp - High Beam Right Headlamp - High Beam Truck Body Controller- Accessory (Gas), Truck Body Controller, Transmission Control Module Accessory (Diesel) Front Windshield Wiper Anti-lock Brakes, Vehicle Stability Enhancement System Ignition A Trailer Climate Control Blower Ignition B Spare (Gas), Engine Control Module Actuator (Diesel) Spare

53
54

55

56
57
58
59

SPARE (G), ECM (D) STRTR

Windshield Wiper Air Conditioning Spare (Gas), Rear Fog Lamps (Diesel) Headlamp - High Beam Fuel Pump Headlamp - Low Beam Horn Spare (Gas), Engine Control Module (Diesel) Starter

Circuit Breaker PWR SEAT

Power Seat

Usage

5-97

Capacities and Specifications The following approximate capacities are given in English and metric conversions. See Recommended Fluids and Lubricants (Gasoline Engine) on page 6-13 for more information. When adding, be sure to fill to the appropriate level or as recommended in this manual. See refrigerant charge label under the hood for charge capacity information and requirements.

Application

Cooling System

4300 V6
4800 V8, 5300 V8
6000 V8

Cooling System with Rear Heat

4300 V6
4800 V8, 5300 V8
6000 V8

Engine Oil with Filter

4300 V6
4800 V8, 5300 V8
6000 V8
Fuel Tank

Capacities

English

11.0 qt 13.4 qt 14.8 qt

14.0 qt 16.4 qt 17.8 qt

4.5 qt 6.0 qt 6.0 qt

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

5-98

Metric

10.4 L 12.7 L 14.0 L

13.2 L 15.5 L 17.0 L

4.3 L 5.7 L 5.7 L

117.3 L 124.9 L 215.7 L

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.

Capacities

English 140 ft lb

Metric 190 Y

Application

Engine

VIN Code

Transmission

Spark Plug Gap

Engine Specifications

VORTEC™ 4300 V6
VORTEC™ 4800 V8
VORTEC™ 5300 V8
VORTEC™ 6000 V8

Automatic Automatic Automatic Automatic

0.060 inches (1.52 mm) 0.040 inches (1.01 mm) 0.040 inches (1.01 mm) 0.040 inches (1.01 mm)

5-99

✍ NOTES

5-100

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 (Gasoline Engine) .........6-4
Additional Required Services (Gasoline Engine) ....6-6
Maintenance Footnotes (Gasoline Engine) ..........6-8
Owner Checks and Services ............................6-9

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

(160, 1 600 and 10 000 km) .......................6-10
At Each Fuel Fill ..........................................6-10
At Least Once a Month .................................6-10
At Least Once a Year ...................................6-11
Recommended Fluids and Lubricants

(Gasoline Engine) ......................................6-13
Normal Maintenance Replacement Parts ..........6-15
Maintenance Record .....................................6-16

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 your vehicle in good working condition. Any damage caused by failure to follow scheduled maintenance may not be covered by warranty.

Your Vehicle and the Environment Proper vehicle maintenance not only helps to keep your 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 your vehicle. To help protect our environment, and to keep your vehicle in good condition, be sure to maintain your vehicle properly.

Maintenance Schedule

Introduction 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 Engine Supplement. Important: Keep engine oil at the proper level and change as recommended.

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

6-2

Using the Maintenance Schedule We at General Motors want to help you keep your vehicle in good working condition. But we do not know exactly how you will drive it. You may drive very short distances only a few times a week. Or you may drive long distances all the time in very hot, dusty weather. You may use your vehicle in making deliveries. Or you may 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 may 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 your vehicle in good condition, see your GM Goodwrench® dealer. This schedule is for vehicles that: • carry passengers and cargo within recommended

limits. You will find these limits on the tire and loading information label. See Loading Your Vehicle on page 4-30.

• are driven on reasonable road surfaces within legal

driving limits.

• use the recommended fuel. See Gasoline Octane

on page 5-5.

The services in Scheduled Maintenance (Gasoline Engine) on page 6-4 should be performed when indicated. See Additional Required Services (Gasoline Engine) on page 6-6 and Maintenance Footnotes (Gasoline Engine) on page 6-8 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 GM Goodwrench® dealer 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, you should have your GM Goodwrench® dealer do these jobs.

6-3

When you go to your GM Goodwrench® dealer for your service needs, you will know that GM-trained and supported service technicians will perform the work using genuine GM parts. If you want to purchase service information, see Service Publications Ordering Information on page 7-14. Owner Checks and Services on page 6-9 tells you what should be checked, when to check it, and what you can easily do to help keep your vehicle in good condition. The proper replacement parts, fluids, and lubricants to use are listed in Recommended Fluids and Lubricants (Gasoline Engine) on page 6-13 and Normal Maintenance Replacement Parts on page 6-15. When your 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 GM parts.

Scheduled Maintenance (Gasoline Engine) 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 Engine Supplement.

When the change engine oil light comes on, it means that service is required for your vehicle. Have your vehicle serviced as soon as possible within the next 600 miles (1 000 km). It is possible that, if you are driving under the best conditions, the engine oil life system may not indicate that vehicle service is necessary for over a year. However, your engine oil and filter must be changed at least once a year and at this time the system must be reset. Your GM Goodwrench® dealer has GM-trained service technicians who will perform this work using genuine GM parts and reset the system. If the engine oil life system is ever reset accidentally, you must service your vehicle within 3,000 miles (5 000 km) since your last service. Remember to reset the oil life system whenever the oil is changed. See Engine Oil Life System (Gasoline Engine) on page 5-16
for information on the Engine Oil Life System and resetting the system. When the change engine oil light 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 your first service be Maintenance I, your second service be Maintenance II, and that you alternate Maintenance I and Maintenance II thereafter. However, in some cases, Maintenance II may be required more often.

6-4

Maintenance I — Use Maintenance I if the change engine oil light comes on 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 comes on 10 months or more since the last service or if the message has not come on at all for one year.

Scheduled Maintenance

Service

Maintenance I Maintenance II

Change engine oil and filter. See Engine Oil (Gasoline Engine) on page 5-13. Reset oil life system. See Engine Oil Life System (Gasoline Engine) on page 5-16. 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 5-17. See footnote (l). Rotate tires and check inflation pressures and wear. See Tire Inspection and Rotation on page 5-61 and “Tire Wear Inspection” in At Least Once a Month on page 6-10. Inspect brake system. See footnote (a). Check engine coolant and windshield washer fluid levels and add fluid as needed. 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).

•

• •

•

•

•

•

•

• •

•

•

•

•

•

• •

6-5

Scheduled Maintenance (cont’d) Service

Maintenance I Maintenance II

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).

• • • •

•

•

Additional Required Services (Gasoline Engine) 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 Engine Supplement.

The following services should be performed at the first maintenance service (I or II) after the indicated miles (kilometers) shown for each item.

6-6

Service and Miles (Kilometers)

Additional Required Services 75,000

25,000
(41 500)

50,000
(83 000)

(125 000)

100,000
(166 000)

125,000
(207 500)

150,000
(240 000)

•

•

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 5-17. Change automatic transmission fluid and filter (severe service). See footnote (h). Change automatic transmission fluid and filter (normal service). 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).

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

6-7

Maintenance Footnotes (Gasoline Engine) 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 Engine Supplement. † 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.

6-8

(c) Visually inspect hoses and have them replaced if they are cracked, swollen, or deteriorated. Inspect all pipes, fittings, and clamps; replace with genuine GM 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) Visually inspect wiper blades for wear or cracking. Replace wiper blades that appear worn or damaged or that streak or miss areas of the windshield. (e) Make sure the safety belt reminder light and all your belts, buckles, latch plates, retractors, and anchorages 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 look for any opened or broken airbag coverings, and have them repaired or replaced. The airbag system does not need regular maintenance. (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.

(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 perform this service. See Engine Coolant on page 5-21 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 you drive 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.

Owner Checks and Services These owner checks and services should be performed at the intervals specified to help ensure the safety, dependability, and emission control performance of your vehicle. Your GM Goodwrench® dealer can assist you with these checks and services. Be sure any necessary repairs are completed at once. Whenever any fluids or lubricants are added to your vehicle, make sure they are the proper ones, as shown in Recommended Fluids and Lubricants (Gasoline Engine) on page 6-13.

6-9

Windshield Washer Fluid Level Check Check the windshield washer fluid level in the windshield washer fluid reservoir and add the proper fluid if necessary.

At Least Once a Month Tire Inflation Check Visually inspect your vehicle’s tires and make sure they are inflated to the correct pressures. Do not forget to check the spare tire. See Tires on page 5-52 for further details. Check to make sure the spare tire is stored securely. See Changing a Flat Tire on page 5-70. 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 5-61.

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 5-98.

At Each Fuel Fill It is important to perform these underhood checks at each fuel fill. Engine Oil Level Check Check the engine oil level and add the proper oil if necessary. See Engine Oil (Gasoline Engine) on page 5-13 for further details. Notice: and keep it at the proper level. Failure to keep your engine oil at the proper level can cause damage to your engine not covered by your warranty. Engine Coolant Level Check Check the engine coolant level and add DEX-COOL® coolant mixture if necessary. See Engine Coolant on page 5-21 for further details.

It is important to check your oil regularly

6-10

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 you start, be sure you have enough room

around the vehicle.

2. Firmly apply both the parking brake and the regular

brake. See Parking Brake on page 2-23. 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 PARK (P) or NEUTRAL (N). If the vehicle starts in any other position, contact your GM Goodwrench® dealer for service.

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 you start, be sure you have enough room around the vehicle. It should be parked on a level surface.

2. Firmly apply the parking brake. See Parking Brake

on page 2-23. Be ready to apply the regular brake immediately if the vehicle begins to move.

3. With the engine off, turn the ignition to RUN, but do

not start the engine. Without applying the regular brake, try to move the shift lever out of PARK (P) with normal effort. If the shift lever moves out of PARK (P), contact your GM Goodwrench® dealer for service.

6-11

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

shift lever is in PARK (P).

• The key should come out only in LOCK. Contact your GM Goodwrench® dealer if service is required. Parking Brake and Automatic Transmission Park (P) Mechanism Check

{CAUTION:

When you are doing this check, your vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of your 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 transmission in NEUTRAL (N), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only.

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

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

Contact your GM Goodwrench® dealer 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.

6-12

Recommended Fluids and Lubricants (Gasoline Engine) 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 Engine Supplement. Fluids and lubricants identified below by name, part number, or specification may be obtained from your dealer.

Usage

Engine Oil

Engine Coolant

Fluid/Lubricant Engine oil which meets GM Standard GM6094M and displays the American Petroleum Institute Certified for Gasoline Engines starburst symbol. GM Goodwrench® oil meets all the requirements for your vehicle. To determine the proper viscosity for your vehicle’s engine, see Engine Oil (Gasoline Engine) on page 5-13. 50/50 mixture of clean, drinkable water and use only DEX-COOL® Coolant. See Engine Coolant on page 5-21.

Usage

Fluid/Lubricant

Hydraulic Brake

System

Delco® Supreme 11 Brake Fluid or equivalent DOT-3 brake fluid.

Windshield

Washer

Parking Brake Cable Guides

Power Steering

System

Automatic

Transmission

Key Lock