2006 Chevrolet Avalanche Owners Manual

1. Remove the jack cover by turning the two wing nuts

one-quarter turn counterclockwise and pulling the jack cover off.

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2. Release the jack (E) from the mounting bracket (G) by turning the knob (B) on the jack counterclockwise to lower the jack head (F) from the mounting bracket.

3. Remove the wheel blocks (A) attached to the

jack (E) by turning the wing nut (C) counterclockwise. Place the wheel blocks where needed as indicated in previously in this section.

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A. Wheel Blocks B. Knob C. Wing Nut D. Retaining Hook

E. Jack F. Jack Head G. Mounting Bracket

The tools for changing a flat tire are located in the passenger’s side top-box storage unit. To remove the tools, do the following: 1. Open the top door on the passenger’s side top-box storage unit. Use the ignition/door key to unlock it if it is locked. See Top-Box Storage on page 2-82
for more information.

You will use the jack handle extensions and the wheel wrench to remove the underbody-mounted spare tire.

Top-Box Storage Unit (Passenger’s Side) 2. Remove the black pouch from the storage box.

You now have all of the tools you will need to lower the spare tire and change a flat.

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A. Spare Tire

(Valve Stem Pointed Down) B. Hoist Assembly C. Hoist Cable D. Tire Retainer E. Hoist Shaft F. Hoist End of

Extension Tool

G. Hoist Shaft

Access Hole

H. Wheel Wrench I. Jack Handle

Extensions

J. Spare Tire Lock

(If Equipped)

Follow these instructions to lower the spare tire: 1. Your vehicle may be equipped with a spare tire

lock (J). Open the spare tire lock cover on the bumper and use the ignition key to remove the lock.

3. Insert the hoist end

(open end) (F) of the extension through the hole (G) in the rear bumper.

2. Assemble the wheel wrench (H) and the two jack

handle extensions (I) as shown.

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

4. Turn the wheel wrench (H) 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 5-95 for more information.

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5. Use the hook on the

wheel wrench to pull the hoist cable towards you to assist in reaching the spare tire.

Removing the Flat Tire and Installing the Spare Tire Use the following pictures and instructions to remove the flat tire and raise the vehicle.

6. Tilt the retainer at the end of the cable when the tire has been lowered, so it can be pulled up through the wheel opening.

7. Put the spare tire near the flat tire.

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The tools you will be using include the jack (A), the wheel blocks (B), the jack handle (C), the jack handle extensions (D), and the wheel wrench (E).

1. If your vehicle has

wheel nut caps, loosen them by turning the wheel wrench counterclockwise. If the vehicle has a center cap with wheel nut caps, the wheel nut caps are designed to stay with the center cap after they are loosened. Remove the entire center cap.

If the wheel has a smooth center cap, place the chisel end of the wheel wrench in the slot on the wheel and gently pry it out.

2. Use the wheel wrench

to loosen all the wheel nuts. Turn the wheel wrench counterclockwise to loosen the wheel nuts. Do not remove the wheel nuts yet.

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{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.

3. Position the jack under the vehicle.

Jack Positions (Overall View)

Refer to the above graphic which shows the general area of jack placement, front position (A), and rear position (B). See the text and art following for the exact jack placement.

{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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Front Position

Front Tire Flat: If the flat tire is on a front tire of the vehicle, you will need to use the jack handle and only one jack handle extension. Attach the wheel wrench to the jack handle extension. Attach the jack handle to the jack. Position the jack on the frame behind the flat tire where the frame sections overlap.

Rear Position — 1500

Series

Rear Position — 2500

Series

Rear Tire Flat: If the flat tire is on a rear tire of the vehicle, you will need to use the jack handle and both jack handle extensions. Attach the wheel wrench to the jack handle extensions. Attach the jack handle to the jack. On all 1500 Series vehicles, use the jacking pad provided on the rear axle. On 2500 series vehicles, use the axle between the spring and shock bracket.

4. Turn the wheel wrench clockwise to raise the

vehicle. Raise the vehicle far enough off the ground so there is enough room for the spare tire to clear the vehicle.

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5. Remove all the wheel nuts and take off the flat tire.

{CAUTION:

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.

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6. Remove any rust or dirt

from the wheel bolts, mounting surfaces, and spare wheel.

8. Put the wheel nuts back on with the rounded end of the nuts toward the wheel after mounting the spare.

9. Tighten each wheel nut by hand. Then use

the wheel wrench to tighten the wheel nuts until the wheel is held against the hub.

7. Install the spare tire.

{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.

Front Position

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{CAUTION:

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 5-120 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 5-120 for the wheel nut torque specification.

Rear Position — 1500

Series

Rear Position — 2500

Series

10. Turn the wheel wrench counterclockwise to lower

the vehicle. Lower the jack completely.

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If you are reinstalling the smooth center cap, place it on the wheel and tap it into place until it seats flush with the wheel.

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 your vehicle. For the secondary latch to work, the spare must be installed with the valve stem pointing down. See Storing a Flat or Spare Tire and Tools on page 5-99.

{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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11. Tighten the nuts firmly in a crisscross sequence as

shown by turning the wheel wrench clockwise.

When you reinstall the full-size wheel and tire, you must also reinstall the wheel cover with attached plastic nuts, the plastic nut caps, or the smooth center cap.

If you are reinstalling a wheel cover with attached plastic nuts, place it on the wheel and tighten the nuts by hand to get them started. Then tighten the nut caps with the wheel wrench until they are snug. Do not overtighten the nut caps or they may break. If you are reinstalling plastic nut caps, tighten the nuts by hand to get them started. Then tighten the nut caps with the wheel wrench until they are snug. Do not overtighten the nut caps or they may break.

(cid:127) (cid:127) (cid:127) To release the spare tire from the secondary latch, do the following:

4. Repeat this procedure at least two times. If the

spare tire lowers to the ground, continue with Step 5 of Removing the Spare Tire and Tools on page 5-84.

5. Turn the wrench counterclockwise until

approximately 6 inches (15 cm) of cable is exposed. 6. Stand the wheel blocks on their shortest ends, with

the backs facing each other.

7. Place the bottom edge

of the jack (A) on the wheel blocks (B), separating them so that the jack is balanced securely.

1. Check under the vehicle to see if the cable end is

visible. If the cable is not visible, proceed to Step 6.

2. If it is visible, first try to tighten the cable by turning

the wheel wrench clockwise until you hear two clicks or feel it skip twice. You cannot overtighten the cable.

3. Loosen the cable by turning the wheel wrench

counterclockwise three or four turns.

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8. Attach the jack handle, extension, and wheel

wrench to the jack and place it (with the wheel blocks) under the vehicle towards the front of the rear bumper.

9. Position the center lift point of the jack under the

center of the spare tire.

10. Turn the wheel wrench clockwise to raise the jack

until it lifts the end fitting.

11. Continue raising the jack until the spare tire stops

moving upward and is held firmly in place. The secondary latch has released and the spare tire is balancing on the jack.

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

16. Turn the wheel wrench clockwise to raise the cable

back up if the cable is hanging under the vehicle.

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 replaced. To continue changing the flat tire, see Removing the Flat Tire and Installing the Spare Tire on page 5-88.

12. 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.

{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.

13. Disconnect the jack handle from the jack. Carefully

remove the jack from underneath the vehicle. 14. 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, insert the hoist handle, extension and wheel wrench into the hoist shaft hole in the bumper and 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.

Notice: Storing an aluminum wheel with a flat tire under your vehicle for an extended period of time or with the valve stem pointing up may damage the wheel. Always stow the wheel with the valve stem pointing down and have the wheel/tire repaired as soon as possible.

A. Spare Tire

(Valve Stem Pointed Down) B. Hoist Assembly C. Hoist Cable D. Tire Retainer E. Hoist Shaft F. Hoist End of

Extension Tool

G. Hoist Shaft

Access Hole

H. Wheel Wrench I. Jack Handle

Extensions

J. Spare Tire Lock

(If Equipped)

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To store the flat or spare tire, do the following: 1. Put the tire on the ground at the rear of the vehicle

with the valve stem pointed down and toward the rear of the vehicle.

2. Tilt the retainer

downward and through the wheel opening. Make sure the retainer is fully seated across the underside of the wheel.

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3. Attach the wheel wrench (H) and extensions (I)

together.

4. Insert the hoist end (F) through the hole (G) in the rear bumper and into the hoist shaft.

5. Raise the tire part way upward. Make sure the

retainer is seated in the wheel opening.

6. Raise the tire fully against the underside of the vehicle by turning the wheel wrench clockwise until you hear two clicks or feel it skip twice. You cannot overtighten the cable.

To store the tools, follow these steps: 1. Return the tools to the tool bag and place it back in

the top-box storage unit.

2. Assemble the wheel blocks and jack together with the wing nut by reversing Step 2 under Removing the Spare Tire and Tools on page 5-84.

3. Replace the jack cover and tighten the jack-cover

wing nuts.

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 wheel wrench to tighten the cable. Reinstall the spare tire lock (if equipped).

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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 5-68 and Loading Your Vehicle on page 4-46
for information regarding proper tire inflation and loading your 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 5-88 and Storing a Flat or Spare Tire and Tools on page 5-99. Your vehicle may have a different size spare tire than the road tires originally installed on your vehicle. This spare tire was developed for use on your vehicle, so it is all right to drive on it. If your vehicle has four-wheel drive and the different size spare tire is installed, keep the vehicle in two-wheel drive.

If your vehicle has four-wheel drive and the

Notice: different size spare tire is installed on your vehicle, do not drive in four-wheel drive until you can have your flat tire repaired and/or replaced. You could damage your vehicle, and the repair costs would not be covered by your warranty. Never use four-wheel drive when the different size spare tire is installed on your vehicle. After installing the spare tire on your vehicle, you should stop as soon as possible and make sure the spare tire 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, the 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 your spare tire and its wheel together. 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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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.

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: (cid:127) Never use a knife or any other sharp object to

remove a soil from any interior surface.

(cid:127) Never use a stiff brush. It can cause damage to

your vehicle’s interior surfaces.

(cid:127) 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.

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(cid:127) 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.

(cid:127) Do not heavily saturate your upholstery while

cleaning.

(cid:127) 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.

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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.

(cid:127) (cid:127) Leather A soft cloth dampened with water may be used to remove dust. If a more thorough cleaning is necessary, a soft cloth dampened with a mild soap solution can be used. Allow the leather to dry naturally. Do not use heat to dry. Never use steam to clean leather. Never use spot lifters or spot removers on leather. Many commercial leather cleaners and coatings that are sold to preserve and protect leather may permanently change the appearance and feel of your leather 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. Never use shoe polish on your leather.

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.

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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 on page 6-13.

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 5-110. 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 5-106.

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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 5-110. 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.

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.

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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.

Aluminum or Chrome-Plated Wheels The vehicle may be equipped with either 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: 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.

If you use strong soaps, chemicals,

The surface of these wheels is similar to the painted surface of your vehicle. Do not use strong soaps, chemicals, abrasive polishes, abrasive cleaners, cleaners with acid, or abrasive cleaning brushes on them because you could damage the surface. Do not use chrome polish on aluminum wheels. 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. Use chrome polish only on chrome-plated wheels, but avoid any painted surface of the wheel, and buff off immediately after application. 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 your vehicle through an automatic car wash that has silicone carbide tire cleaning brushes. These brushes can also damage the surface of these wheels.

If you drive your vehicle through an

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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.

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. 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.

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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

Usage

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.

Swirl Remover Polish

Cleaner Wax

Foaming Tire Shine Low Gloss

Wash Wax Concentrate

Spot Lifter

Odor Eliminator

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.

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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 inside of the glove box. It is very helpful if you ever need to order parts. On this label, you will find the following: (cid:127) VIN (cid:127) Model designation (cid:127) Paint information (cid:127) Production options and special equipment Be sure that this label is not removed from the vehicle. Electrical System 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 to your vehicle, see Servicing Your Airbag-Equipped Vehicle on page 1-65.

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Windshield Wiper Fuses The windshield wiper motor is protected by an internal circuit breaker and a fuse. If the motor overheats due to heavy snow, etc., the wiper will stop until the motor cools. If the overload is caused by some electrical problem and not snow, etc., be sure to get it fixed.

Power Windows and Other Power Options Circuit breakers protect the power windows and other power accessories. When the current load is too heavy, the circuit breaker opens and closes, protecting the circuit until the problem is fixed or goes away.

Fuses and Circuit Breakers The wiring circuits in your vehicle are protected from short circuits by a combination of fuses, circuit breakers and fusible thermal links. 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.

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If you ever have a problem on the road and don’t have a spare fuse, you can borrow one that has the same amperage. Just pick some feature of your vehicle that you can get along without – like the radio or cigarette lighter – and use its fuse, if it is the correct amperage. Replace it as soon as you can.

Instrument Panel Fuse Block

The fuse block access door is on the driver’s side edge of the instrument panel. Pull off the cover to access the fuse block.

To remove fuses if you don’t have a fuse extractor, hold the end of the fuse between your thumb and index finger and pull straight out. You may have spare fuses located behind the fuse block access door. These can be used to replace a bad fuse. However, make sure it is of the correct amperage.

Fuses

Usage

LCK

HVAC 1

LT DR

CRUISE

UNLCK

RR FOG LP BRAKE

DRIVER UNLCK

IGN 0

TBC IGN 0

VEH CHMSL

LT TRLR ST/TRN

LT TRN

Power Door Lock Relay (Lock Function) Inside Rearview Mirror, Climate Control System Driver’s Door Harness Connection Cruise Control Power Door Lock Relay (Unlock Function) Rear Fog Lamp (Export Only) Anti-lock Brake System Power Door Lock Relay (Driver’s Door Unlock Function) Powertrain Control Module, Transmission Control Module Truck Body Controller Vehicle and Trailer High Mounted Stoplamp Left Turn Signal/Stop Trailer Left Turn Signals and Sidemarkers

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Fuses

Usage

RR Wiper

SEO ACCY

WS WPR

TBC ACCY

IGN 3
4WD HTR A/C

Not Used Special Equipment Option Accessory Windshield Wipers Truck Body Controller Accessory Ignition, Heated Seats Four-Wheel Drive System Climate Control System

Fuses

Usage

VEH STOP

BODY RT TRLR ST/TRN

RT TRN

Vehicle Stoplamps, Brake Module, Electronic Throttle Control Module Harness Connector Right Turn Signal/Stop Trailer Right Turn Signals and Sidemarkers Driver Door Module

ECC, TPM

DDM AUX PWR 2, M/GATE Rear Cargo Area Power Outlets, Midgate Power Door Lock System LCKS Rear Electronic Climate Control, Tire Pressure Monitoring System (If Equipped) Truck Body Controller Flasher Module Left Power Window Circuit Breaker Truck Body Controller Truck Body Controller

TBC 2C HAZRD

TBC 2B TBC 2A

CB LT DRS

5-114

Center Instrument Panel Fuse Block The center instrument panel utility block is located underneath the instrument panel, to the left of the steering column.

Device

SEO

TRAILER UPFIT SL RIDE HDLR 2
BODY DEFOG

Usage Special Equipment Option/Off-road Lamps Harness Connector Trailer Brake Wiring Upfitter (Not Used) Ride Control (Not Used) Headliner Wiring Connector 2
Body Wiring Connector Rear Defogger Relay

Underhood Fuse Block

Device

HDLNR 1
SPARE RELAY

CB SEAT

CB RT DOOR

SPARE INFO

Usage

Headliner Wiring Connector 1
Not Used Driver and Passenger Seat Module Circuit Breaker Rear Right Power Window, Passenger Door Module Not Used Not Used

The underhood fuse block is located in the engine compartment on the driver’s side of the vehicle, near the battery. Lift the cover for access to the fuse/relay block. To remove fuses, hold the end of the fuse between your thumb and index finger and pull straight out. See Engine Compartment Overview on page 5-14 for more information on its location.

5-115

5-116

*1 — Gasoline Engine and Fuel Injection Rail #2. *2 — Gasoline Engine and Fuel Injection Rail #1. *3 — Gasoline Engine; Oxygen Sensors. *4 — Gasoline Engine; Oxygen Sensors. *5 — Ignition 1
*6 — Powertrain Control Module, Fuel Pump. *7 — Rear Climate Control. *8 — Sunroof.

Fuses GLOW PLUG CUST FEED HYBRID STUD #1

MBEC

BLWR

LBEC

STUD #2*

ABS

Usage

Not Used Accessory Power Not Used Auxiliary Power Mid-Bussed Electrical Center Power Feed, Front Seats, Right Doors Front Climate Control Fan Left Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet — Rear Cargo Area and Instrument Panel Accessory Power/Trailer Wiring Brake Feed Anti-lock Brakes

Fuses

VSES/ECAS

IGN A IGN B

LBEC 1

TRL PARK

RR PARK

LR PARK

PARK LP STRTR INTPARK STOP LP

TBC BATT

SEO B2
4WS

AUX PWR

PCM 1

ETC/ECM

Usage

Automatic Level Control (ALC) Compressor Ignition Power Ignition Power Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module Parking Lamps Trailer Wiring Right Rear Parking and Sidemarker Lamps Left Rear Parking and Sidemarker Lamps Parking Lamps Relay Starter Relay Interior Lamps Stoplamps Truck Body Controller Battery Feed Off-Road Lamps Not Used Accessory Power Outlet — Console Powertrain Control Module Electronic Throttle Control, Electronic Brake Controller

5-117

Fuses

Usage

Fuses

Usage

Instrument Panel Cluster, Air Conditioning Relay, Turn Signal/Hazard Switch, Starter Relay Electronic Suspension Control, Automatic Level Control (ALC) Exhaust Backup Lamps Trailer Wiring Fuel Pump (Relay) Back-up Lamps, Automatic Transmission Shift Lock Control System Rear Window Defogger Headlamp High Beam Relay Not Used Supplemental Inflatable Restraint System Front Parking Lamps, Sidemarker Lamps Daytime Running Lamps Relay Rear Defog Relay Truck Body Controller Ignition Driver’s Side High Beam Headlamp

LH HID

DRL RVC

IPC/DIC

HVAC/ECAS CIG LTR

HI HDLP-RT

HDLP-LOW

A/C COMP

A/C COMP TCMB RR WPR RADIO

SEO B1

LO HDLP-LT

BTSI

Left Hand High Intensity Discharge Lamps Daytime Running Lamps Regulated Voltage Control Instrument Panel Cluster/Driver Information Center Climate Control Controller Cigarette Lighter Passenger’s Side High Beam Headlamp Headlamp Low Beam Relay Air Conditioning Compressor Relay Air Conditioning Compressor Transmission Control Module Not Used Audio System Mid Bussed Electrical Center, Universal Home Remote System, Rear Heated Seats Driver’s Side Headlamp Low Beam Brake Transmission Shift Interlock System

IGN E

RTD

TRL B/U F/PMP

B/U LP

RR DEFOG HDLP-HI PRIME

AIRBAG

FRT PARK

DRL

SEO IGN TBC IGN1

HI HDLP-LT

5-118

Fuses

Usage

CRNK

LO HDLP-RT

FOG LP FOG LP HORN W/S WASH W/S WASH

INFO

RADIO AMP

RH HID

HORN EAP

TREC

SBA

Starting System Passenger’s Side Headlamp Low Beam Fog Lamp Relay Fog Lamps Horn Relay Not Used Not Used OnStar®/Rear Seat Entertainment Radio Amplifier Right Hand High Intensity Discharge Lamp Horn Fuse Electric Adjustable Pedals All-Wheel Drive Module (If Equipped) Supplemental Brake Assist

Auxiliary Electric Cooling Fan Fuse Block

The auxiliary electric cooling fan fuse block is located in the engine compartment on the driver’s side of the vehicle next to the underhood fuse block.

Lift the cover for access to the fuse/relay block.

Fuses COOL/FAN COOL/FAN COOL/FAN

Usage

Cooling Fan Cooling Fan Relay Fuse Cooling Fan Fuse

Relays

COOL/FAN 1
COOL/FAN 3
COOL/FAN 2

Usage Cooling Fan Relay 1
Cooling Fan Relay 3
Cooling Fan Relay 2

5-119

Capacities and Specifications The following approximate capacities are given in English and metric conversions. See Recommended Fluids and Lubricants on page 6-13 for more information.

Application

Engine Cooling System

5.3L V8 with Front A/C (Engine Fan Driven Cooling System) 5.3L V8 with Front A/C* (Electric Cooling Fan System)* 5.3L V8 with Front A/C (Electric Cooling Fan System)** 8.1L V8 (Engine Fan Driven Cooling System

*Vehicles with a cladded front. **Vehicles with an uncladded front. Engine Oil with Filter

5.3L V8
8.1L V8

Fuel Tank Capacity

1500
2500

Capacities

English

16.5 qt

17.2 qt 17.4 qt 25.0 qt

6.0 qt 6.5 qt

Metric

15.6 L

16.3 L 16.5 L 23.7 L

5.7 L 6.1 L

31.0 gal 37.5 gal 2.0 qt 140 lb ft

117.0 L 142.0 L 1.9 L

Transfer Case Fluid 190 Y 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.

5-120

Engine Specifications

Engine

VIN Code

Transmission

Spark Plug Gap

VORTEC™ 5.3L V8
VORTEC™ 5.3L V8
VORTEC™ 8.1L V8

Automatic Automatic Automatic

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

5-121

✍ NOTES

5-122

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 ......................6-2
Scheduled Maintenance ...................................6-4
Additional Required Services ............................6-6
Maintenance Footnotes ...................................6-7

Owner Checks and Services ............................6-9
At Each Fuel Fill ............................................6-9
At Least Once a Month .................................6-10
At Least Once a Year ...................................6-10
Recommended Fluids and Lubricants ...............6-13
Normal Maintenance Replacement Parts ..........6-15
Engine Drive Belt Routing ..............................6-16
Maintenance Record .....................................6-17

6-1

Maintenance Schedule

Introduction 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.

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.

6-2

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.

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 4-46. are driven on reasonable road surfaces within legal driving limits. are driven off-road in the recommended manner. See Off-Road Driving on page 4-17. use the recommended fuel. See Gasoline Octane on page 5-5.

The services in Scheduled Maintenance on page 6-4
should be performed when indicated. See Additional Required Services on page 6-6 and Maintenance Footnotes on page 6-7 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. 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 7-15.

6-3

(cid:127) (cid:127) (cid:127) (cid:127) 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 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 When the CHANGE ENGINE OIL message 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.

6-4

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 on page 5-20 for information on the Engine Oil Life System and resetting the system. When the CHANGE ENGINE OIL 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 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. Maintenance I — Use Maintenance I if the CHANGE ENGINE OIL message 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 on page 5-17. Reset oil life system. See Engine Oil Life System on page 5-20. An Emission Control Service. Lubricate chassis components. See footnote #. Visually check for any leaks or damage. See footnote (j). Inspect engine air cleaner filter or change indicator (if equipped). If necessary, replace filter. See Engine Air Cleaner/Filter on page 5-22. See footnote (l). Rotate tires and check inflation pressures and wear. See Tire Inspection and Rotation on page 5-73 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). 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.

•

• •

•

•

•

•

•

• •

•

•

•

•

•

• • • • • •

6-5

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

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)

Service and Miles (Kilometers)

Inspect fuel system for damage or leaks. Inspect exhaust system for loose or damaged components. Vehicles without a filter restriction indicator: Replace engine air cleaner filter. See Engine Air Cleaner/Filter on page 5-22. Change automatic transmission fluid and filter (severe service). See footnote (h). Change automatic transmission fluid and filter (normal service). Change transfer case fluid. See footnote (g). Inspect evaporative control system. An Emission Control Service. See footnotes † and (k).

6-6

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Additional Required Services (cont’d)

Service and Miles (Kilometers)

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 (m).

25,000
(41 500)

50,000
(83 000)

75,000

(125 000)

100,000
(166 000)

125,000
(207 500)

150,000
(240 000)

•

•

•

Maintenance Footnotes † 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, ball joints, steering linkage, transmission shift linkage, and parking brake cable guides. Ball joints should not be lubricated unless their temperature is 10°F (-12°C) or higher, or they could be damaged. (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.

6-7

(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. Visually check constant velocity joints, rubber boots, and axle seals for leaks. (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 latch assembly, secondary latch, pivots, spring anchor, release pawl, midgate hinges, side storage box door hinges, tailgate hinges, tailgate linkage, outer tailgate handle pivot points, latch bolt, fuel door hinge, locks, and folding 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) Check vent hose at transfer case for kinks and proper installation. (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 5-28 for what to use. Inspect hoses. Clean radiator, condenser, pressure cap, and filler neck. Pressure test the cooling system and pressure cap.

6-8

(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) 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 on page 6-13.

It is important to check your oil regularly

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 on page 5-17 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 5-28 for further details. Windshield Washer Fluid Level Check Check the windshield washer fluid level in the windshield washer fluid reservoir and add the proper fluid if necessary.

6-9

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 5-62 for further details. Check to make sure the spare tire is stored securely. See Changing a Flat Tire on page 5-83. 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 5-73.

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 2-38. 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.

6-10

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.

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.

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 2-38. 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

(cid:127) (cid:127) Parking Brake and Automatic Transmission Park (P) Mechanism Check

Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake.

{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.

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

(cid:127) (cid:127) Recommended Fluids and Lubricants Fluids and lubricants identified below by name, part number, or specification may be obtained from your dealer. Usage

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 on page 5-17. 50/50 mixture of clean, drinkable water and use only DEX-COOL® Coolant. See Engine Coolant on page 5-28.

Engine Oil

Engine Coolant

Usage

Fluid/Lubricant

Hydraulic Brake

System

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

Windshield

Washer

Power Steering

System

Automatic

Transmission

Key Lock Cylinders

Chassis

Lubrication

Front Axle

GM Optikleen® Washer Solvent.

GM Power Steering Fluid (GM Part No. U.S. 89021184, in Canada 89021186). DEXRON®-VI Automatic Transmission Fluid. Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241, in Canada 10953474). Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB. SAE 80W-90 Axle Lubricant (GM Part No. U.S. 1052271, in Canada 10950849).

6-13

Usage

Fluid/Lubricant

Usage

Fluid/Lubricant

Rear Axle

Automatic

Transfer Case

SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 12378261, in Canada 10953455) meeting GM Specification 9986115. AUTO-TRAK II Fluid (GM Part No. U.S. 12378508, in Canada 10953626).

Front Axle Propshaft Spline or One-Piece Propshaft

Spline

(Two-Wheel Drive with

Auto. Trans.)

Spline Lubricant, Special Lubricant (GM Part No. U.S. 12345879, in Canada 10953511) or lubricant meeting requirements of GM 9985830.

Hood Hinges

Outer Tailgate Handle Pivot

Points

Weatherstrip Conditioning

Weatherstrip