2009 Hummer H2 Owners Manual

could fail suddenly, causing a crash. Use only radial-ply tires with the wheels on the vehicle.

If you must replace your vehicle’s tires with those that do not have a TPC Spec number, make sure they are the same size, load range, speed rating, and construction type (radial and bias-belted tires) as your vehicle’s original tires. Vehicles equipped with a tire pressure monitoring system may give an inaccurate low-pressure warning if non-TPC spec rated tires are installed on your vehicle. Non-TPC Spec rated tires may give a low-pressure warning that is higher or lower than the proper warning level you would get with TPC Spec rated tires. See Tire Pressure Monitor System on page 5-64. Your vehicle’s original equipment tires are listed on the Tire and Loading Information Label. See Loading the Vehicle on page 4-44, for more information about the Tire and Loading Information Label and its location on your vehicle.

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

{ CAUTION:

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

See Buying New Tires on page 5-72 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 (NHTSA), which grades tires by treadwear, traction, and temperature performance. This applies only to vehicles sold in the United States. The grades are molded on the sidewalls of most passenger car tires. The Uniform Tire Quality Grading (UTQG) system does not apply to deep tread, winter-type snow tires, space-saver, or temporary use spare tires, tires with nominal rim diameters of 10 to 12 inches (25 to 30 cm), or to some limited-production tires. While the tires available on General Motors passenger cars and light trucks may vary with respect to these grades, they must also conform to federal safety requirements and additional General Motors Tire Performance Criteria (TPC) standards.

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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.

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Temperature – A, B, C The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.

{ 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.

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

Wheel Replacement Replace any wheel that is bent, cracked, or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts, and wheel nuts should be replaced. If the wheel leaks air, replace it (except some aluminum wheels, which can sometimes be repaired). See your dealer/retailer if any of these conditions exist. Your dealer/retailer will know the kind of wheel you need. Each new wheel should have the same load-carrying capacity, diameter, width, offset, and be mounted the same way as the one it replaces.

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If you need to replace any of your wheels, wheel bolts, wheel nuts, or Tire Pressure Monitor System (TPMS) sensors, replace them only with new GM original equipment parts. This way, you will be sure to have the right wheel, wheel bolts, wheel nuts, and TPMS sensors for your vehicle.

Used Replacement Wheels

{ CAUTION:

{ 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. See Changing a Flat Tire on page 5-80 for more information.

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

Tire Chains Notice: Use tire chains only where legal and only when you must. Use chains that are the proper size for the vehicle’s 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 the 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 the vehicle.

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Accessory Inflator Your vehicle may have an accessory inflator system. You can inflate things like basketballs and bicycle tires. You can also use it to bring your tire pressure up to the proper pressure. The engine must be running and the gearshift lever must be in P (Park) for the inflator to operate.

The accessory inflator is located in the rear compartment on the passenger’s side of the vehicle.

The accessory inflator kit includes a hose and three nozzle adapters.

To use the accessory inflator, do the following:

1. Attach the appropriate nozzle adapter to the end of

the hose.

2. Attach that end of the hose to the object you wish

to inflate.

3. Remove the dust cover and attach the hose to the

outlet.

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{ CAUTION:

Inflating something too much can make it explode, and you or others could be injured. Be sure to read the inflator instructions, and inflate any object only to its recommended pressure.

If a Tire Goes Flat It is unusual for a tire to blowout while you are driving, especially if you maintain your vehicle’s tires properly. If air goes out of a tire, it is much more likely to leak out slowly. But if you should ever have a blowout, here are a few tips about what to expect and what to do: If a front tire fails, the flat tire creates a drag that pulls the vehicle toward that side. Take your foot off the accelerator pedal and grip the steering wheel firmly. Steer to maintain lane position, and then gently brake to a stop well out of the traffic lane.

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The accessory inflator hose also has a built-in air pressure gage. As soon as you start to inflate an object it will automatically read the current pressure. 4. Press and release the switch to turn the accessory inflator on. The indicator light will remain on while the inflator is running.

When you are finished using the inflator, press and release the switch to turn it off. Place the inflator kit tools and the hose back in the pouch. If your vehicle is equipped with the air suspension system, load leveling will not function with the inflator hose attached to the inflator outlet.

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.

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

{ CAUTION:

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

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

{ CAUTION:

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

1. Set the parking brake firmly. 2. Put the shift lever in P (Park). 3. Be sure the transfer case is in a drive

gear — not in Neutral.

CAUTION:

(Continued)

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CAUTION:

(Continued)

4. Turn off the engine and do not restart while

the vehicle is raised.

5. Do not allow passengers to remain in the

vehicle.

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

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

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

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Removing the Spare Tire and Tools (SUT) The jack is stored in the rear cargo compartment on the passenger side of the vehicle. The tools for the jack are stored under the rear passenger’s seat. To remove the tools: 1. Locate the tools by lifting the driver’s side second

row seat up to expose the floor.

3. Open the tool bag. You will find the following tools

needed to remove the spare tire and flat tire:

A. Jack Handle B. Jack Handle

Extensions (2) C. Wheel Wrench

D. Wheel Wrench

Extension

E. Wheel Blocks

2. Remove the strap from the seat rail. Then carefully

slide the tool bag out from under the seat rail as shown. Take care to not pinch the seat cables or electrical harnesses.

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To access the jack, remove the cover, unlock it and then pull the cover off.

Release the jack by inserting the wheel wrench (A) into the hole (B) and turn counterclockwise. Before proceeding, be sure to set the wheel blocks at the appropriate tire as previously shown.

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Remove the wheel blocks from the tool bag. Then lift the wheel block as shown to lock it into place.

Removing the Spare Tire (SUT) The spare tire is attached to the tire carrier. To remove the spare tire: In order to remove the spare tire, you may need someone to assist you. 1. Open the tire carrier. See Tailgate/Spare Tire Carrier on page 2-16 for tire carrier operation.

2. Unscrew the wing nut on the back of the tire carrier.

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3. Pull off the license plate holder from the spare tire. 4. Attach the wheel wrench to the wheel wrench

extender to remove the wheel nuts.

5. Turn the wheel wrench with the wheel wrench

extender counterclockwise to loosen the wheel nuts.

6. Remove the wheel nuts holding the spare tire onto

the tire carrier.

7. Pull off the spare tire and gently lower to the

ground. Set it next to the flat tire.

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Removing the Spare Tire and Tools (SUV) Removing the Tools (SUV) The equipment you will need to change a flat tire is stored under the storage tray, which is located on the driver side trim panel (over the rear wheelhouse). To remove the equipment:

1. Remove the tray to access the tools by pulling up

on the finger depression.

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2. Turn the retainer nut (C) counterclockwise. Remove the tool bag (A) and the two wheel blocks (B) from the storage area.

3. Open the tool bag. The following tools needed to remove the spare tire and flat tire are inside the tool bag:

A. Jack Handle B. Jack Handle

Extensions (2) C. Wheel Wrench D. Wheel Wrench

Extension

Before proceeding, be sure to set the wheel blocks at the appropriate tire as previously shown. To use the wheel blocks: Removing the Jack (SUV) The jack is stored in the rear cargo area on the driver side.

1. To access the jack pull on the two latches to

remove the trim cover.

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Removing the Spare Tire (SUV) The spare tire is attached to the tire carrier. To remove the spare tire: In order to remove the spare tire, you may need someone to assist you. 1. Open the tire carrier. See Tailgate/Spare Tire Carrier on page 2-16 for tire carrier operation.

2. Unscrew the wing nut on the back of the tire carrier.

2. Insert the wheel wrench into the hole and turn it

counterclockwise to release it.

3. Grasp and lift the jack out of the bracket.

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3. Pull off the license plate holder from the spare tire. 4. Attach the wheel wrench to the wheel wrench extender to remove the wheel nuts. Turn the wheel wrench with the wheel wrench extender counterclockwise to loosen the wheel nuts.

5. Remove the wheel nuts holding the spare tire onto

the tire carrier.

6. Pull off the spare tire and gently lower it to the

ground. Set it next to the flat tire.

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Removing the Flat Tire and Installing the Spare Tire Jack (SUV and SUT) 1. Do a safety check before proceeding. See Changing

a Flat Tire on page 5-80 for more information.

2. To remove the center cap, place the flat end of the wheel wrench in the slot on the wheel and carefully pry the center cap out.

3. Attach the wheel wrench to the extender.

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4. Turn the wheel wrench counterclockwise to loosen

the wheel nuts. Do not remove them yet. Now jack the vehicle up.

5. Assemble the jack and tools:

Assemble the jack together with the jack handle and the jack handle extensions, as shown above. 6. Turn the wheel wrench clockwise to raise the jack

head to the lifting point.

Front Flat Tire – Jack

7. Front Flat Tire: Position the jack under the vehicle

on the front lower control arm behind the flat tire.

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{ CAUTION:

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

Rear Flat Tire – Jack

{ CAUTION:

Rear Flat Tire: Place the jack under the curved rear axle pad. Make sure the jack head is positioned so that the rear axle pad is resting securely on the jack head.

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.

8. 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 ground.

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

10. Remove any rust or dirt

from the wheel bolts, mounting surfaces and spare wheel.

{ CAUTION:

Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if needed, to get all the rust or dirt off. See Changing a Flat Tire on page 5-80.

{ CAUTION:

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

11. Install the spare tire. 12. Put the wheel nuts back on with the rounded end of

the nuts toward the wheel.

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{ CAUTION:

Incorrect or improperly tightened wheel nuts can cause the wheel to come loose and even come off. This could lead to a crash. If you have to replace them, be sure to get new 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 5-117
for wheel nut torque specification.

13. Tighten each wheel nut by hand. Then use the

wheel wrench to tighten the nuts by turning it clockwise until the wheel is held against the hub. You will not be tightening the nuts fully yet.

14. Lower the vehicle by turning the wheel wrench

counterclockwise. Then lower the jack completely.

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 5-117 for the wheel nut torque specification.

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15. Tighten the nuts

firmly in a crisscross sequence as shown by turning the wheel wrench with the wheel wrench extender clockwise.

16. When you install the wheel and tire, you must also reinstall the center cap. Place the cap on the wheel and tap it into place until it sits flush with the wheel.

Storing a Flat or Spare Tire and Tools (SUT) Storing the Flat or Spare Tire Use the following art and text to help you store the spare or flat tire back into its proper location when you are done. To store the flat or spare tire on the tire carrier: 1. Close the tire carrier. See Tailgate/Spare Tire Carrier on page 2-16 for tire carrier operation.

2. Place the flat or spare tire onto the tire carrier with

the outside of the wheel facing you.

3. Reinstall the wheel nuts holding the spare or flat tire to the tire carrier. Tighten the nuts by hand.

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4. Use the wheel wrench and the wheel wrench

extension to tighten the nuts firmly. Try to move the tire back and forth slightly to be sure it is secure.

5. Slide the license plate holder onto the spare or flat tire. Secure it from the back of the tire carrier with the wing nut. If you choose not to reinstall the spare or flat tire on the vehicle, you will still need to reinstall the license plate holder on the spare tire carrier.

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Storing the Jack and Tools To store the jack and tools: 1. Lower the jack completely. 2. Place the jack in the mounting bracket.

6. Place the remaining tools in the tool bag. 7. Make sure nothing is located under or in front of the

seat and then lift the rear driver’s side second row seat so that the floor is exposed.

3. Turn the hole at the top of the jack clockwise until

the jack is held tight in the mounting bracket.

4. Push and pull on the jack and retighten if necessary

to make sure the jack is secure.

5. Place the wheel blocks in the tool bag.

8. Place the narrow end of the tool bag under the seat

rails as shown. Slide the tool bag under the rear seat. Be careful not to pinch the seat cables or electrical harnesses.

9. Reinstall the strap to the seat rail. 10. Return the seat to the correct position.

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Storing a Flat or Spare Tire and Tools (SUV) Storing the Flat or Spare Tire Use the following art and text to help store the spare or flat tire back into its proper location when done changing a tire. To store the flat or spare tire on the tire carrier: 1. Close the tire carrier. See Tailgate/Spare Tire Carrier on page 2-16 for tire carrier operation.

2. Place the flat or spare tire onto the tire carrier with

the outside of the wheel facing out.

3. Reinstall the wheel nuts holding the spare or the flat

tire to the tire carrier. Tighten the nuts by hand.

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4. Use the wheel wrench and wheel wrench extension

to tighten the nuts firmly.

5. Try to move the tire back and forth slightly to make

sure it is secure.

Storing the Jack and Tools To store the jack and tools: 1. Lower the jack completely. 2. Place the jack in the mounting bracket.

6. Slide the license plate holder onto the spare or flat tire. Secure it from the back of the tire carrier with the wing nut. If you choose not to reinstall the spare or flat tire on the vehicle, you still need to reinstall the license plate holder on the spare tire carrier.

3. Turn the hole at the top of the jack clockwise until

the jack is held tight in the mounting bracket.

4. Push and pull on the jack and retighten if necessary

to make sure the jack is secure.

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5. Replace the trim cover. Make sure the latches are

pushed down.

8. Use the wheel blocks (B) to secure the tool bag (A)

to the bracket.

6. Place all the tools, except for the wheel blocks, in

the tool bag.

9. Turn the retainer nut (C) clockwise to secure the

wheel blocks (B) and tool bag (A) into place.

7. Place the tool bag in the storage area.

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10. Return the storage tray to its original location by

pushing down on the finger depression.

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 5-63 and Loading the Vehicle on page 4-44
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 5-90 and Storing a Flat or Spare Tire and Tools (SUT) on page 5-95
or Storing a Flat or Spare Tire and Tools (SUV) on page 5-98. 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. Do not mix tires and wheels of different sizes, because they will not fit. Keep your spare tire and its wheel together.

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Appearance Care

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

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

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Do not clean the vehicle using: (cid:129) A knife or any other sharp object to remove a soil

from any interior surface.

(cid:129) A stiff brush. It can cause damage to the vehicle’s

interior surfaces.

(cid:129) Heavy pressure or aggressive rubbing with a

cleaning cloth. Use of heavy pressure can damage the interior and does not improve the effectiveness of soil removal. Laundry detergents or dishwashing soaps with degreasers can leave residue that streaks and attracts dirt. For liquid cleaners, about 20 drops per gallon (3.78 L) of water is a good guide. Use only mild, neutral-pH soaps. Too much cleaner that saturates the upholstery.

(cid:129) Organic solvents such as naptha, alcohol, etc. that

can damage the vehicle’s interior.

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

For liquids: gently blot the remaining soil with a paper towel. Allow the soil to absorb into the paper towel until no more can be removed. For solid dry soils: remove as much as possible and then vacuum.

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

club soda.

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

cleaning cloth remains clean.

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

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

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(cid:129) (cid:129) (cid:129) (cid:129) 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.

Leather A soft cloth dampened with water can 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 the leather and are not recommended. Do not use silicone or wax-based products, or those containing organic solvents to clean the vehicle’s interior because they can alter the appearance by increasing the gloss in a non-uniform manner. Never use shoe polish on 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 the interior and are not recommended. Do not use silicone or wax-based products, or those containing organic solvents to clean the vehicle’s interior because they can alter the appearance by increasing the gloss in a non-uniform manner. Some commercial products may increase gloss on the instrument panel. The increase in gloss may cause annoying reflections in the windshield and even make it difficult to see through the windshield under certain conditions.

Wood Panels Use a clean cloth moistened in warm, soapy water (use mild dish washing soap). Dry the wood immediately with a clean cloth.

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Speaker Covers Vacuum around a speaker cover gently, so that the speaker will not be damaged. Clean spots with just water and mild soap.

Care of Safety Belts Keep belts clean and dry.

{ CAUTION:

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

Weatherstrips Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth. During very cold, damp weather frequent application may be required. See Recommended Fluids and Lubricants on page 6-13.

Washing Your Vehicle The best way to preserve the vehicle’s finish is to keep it clean by washing it often. Notice: Certain cleaners contain chemicals that can damage the emblems or nameplates on the vehicle. Check the cleaning product label. If it states that it should not be used on plastic parts, do not use it on the vehicle or damage may occur and it would not be covered by the warranty. Do not wash the vehicle in direct sunlight. Use a car washing soap. Do not use cleaning agents that are petroleum based or that contain acid or abrasives, as they can damage the paint, metal or plastic on the vehicle. Approved cleaning products can be obtained from your dealer/retailer. Follow all manufacturers’ directions regarding correct product usage, necessary safety precautions and appropriate disposal of any vehicle care product. Rinse the vehicle well, before washing and after to remove all cleaning agents completely. If they are allowed to dry on the surface, they could stain. Dry the finish with a soft, clean chamois or an all-cotton towel to avoid surface scratches and water spotting. High pressure car washes may cause water to enter the vehicle. Avoid using high pressure washes closer than 12 inches (30 cm) to the surface of the vehicle. Use of power washers exceeding 1,200 psi (8 274 kPa) can result in damage or removal of paint and decals.

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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 5-105.

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

Foreign materials such as calcium chloride and other salts, ice melting agents, road oil and tar, tree sap, bird droppings, chemicals from industrial chimneys, etc., can damage the vehicle’s finish if they remain on painted surfaces. Wash the vehicle as soon as possible. If necessary, use non-abrasive cleaners that are marked safe for painted surfaces to remove foreign matter. Exterior painted surfaces are subject to aging, weather and chemical fallout that can take their toll over a period of years. To help keep the paint finish looking new, keep the vehicle garaged or covered whenever possible. Protecting Exterior Bright Metal Parts Bright metal parts should be cleaned regularly to keep their luster. Washing with water is all that is usually needed. However, chrome polish may be used on chrome or stainless steel trim, if necessary. Use special care with aluminum trim. To avoid damaging protective trim, never use auto or chrome polish, steam or caustic soap to clean aluminum. A coating of wax, rubbed to high polish, is recommended for all bright metal parts.

5-106

Windshield, Backglass, and Wiper Blades Clean the outside of the windshield and backglass with glass cleaner. Clean the rubber blades using a lint free cloth or paper towel soaked with windshield washer fluid or a mild detergent. Wash the windshield thoroughly when you clean the blades. Bugs, road grime, sap and a buildup of vehicle wash/wax treatments may cause wiper streaking. Replace the wiper blades if they are worn or damaged. Wipers can be damaged by: (cid:129) Extreme dusty conditions (cid:129) Sand and salt (cid:129) Heat and sun (cid:129) Snow and ice, without proper removal

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

Keep the wheels clean using a soft clean cloth with mild soap and water. Rinse with clean water. After rinsing thoroughly, dry with a soft clean towel. A wax may then be applied. Notice: Using chrome polish on aluminum wheels could damage the wheels. The repairs would not be covered by the warranty. Use chrome polish on chrome wheels only. The surface of these wheels is similar to the painted surface of the vehicle. Do not use strong soaps, chemicals, abrasive polishes, abrasive cleaners, cleaners with acid, or abrasive cleaning brushes on them because the surface could be damaged. Do not use chrome polish on aluminum wheels. Notice: Driving the vehicle through an automatic car wash that has silicone carbide tire cleaning brushes, could damage the aluminum or chrome-plated wheels. The repairs would not be covered by the warranty. Never drive a vehicle equipped with aluminum or chrome-plated wheels through an automatic car wash that uses silicone carbide tire cleaning brushes.

5-107

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

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

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

5-108

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

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

Vehicle Identification

Vehicle Identification Number (VIN)

This is the legal identifier for the vehicle. It appears on a plate in the front corner of the instrument panel, on the driver side. It can be seen through the windshield from outside the vehicle. The VIN also appears on the Certification/Tire and Service Parts labels and the certificates of title and registration. Engine Identification The eighth character in the VIN is the engine code. This code helps identify the vehicle’s engine, specifications, and replacement parts. See “Engine Specifications” under Capacities and Specifications on page 5-117 for the vehicle’s engine code.

Service Parts Identification Label This label is on the inside of the glove box. It is very helpful if parts need to be ordered. The label has the following information: (cid:129) Vehicle Identification Number (VIN) (cid:129) Model designation (cid:129) Paint information (cid:129) Production options and special equipment Do not remove this label from the vehicle. Electrical System

Add-On Electrical Equipment Notice: Do not add anything electrical to the vehicle unless you check with your dealer/retailer first. Some electrical equipment can damage the vehicle and the damage would not be covered by the vehicle’s warranty. Some add-on electrical equipment can keep other components from working as they should. Add-on equipment can drain the vehicle battery, even if the vehicle is not operating. The vehicle has an airbag system. Before attempting to add anything electrical to the vehicle, see Servicing Your Airbag-Equipped Vehicle on page 1-79.

5-109

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. If the overload is caused by some electrical problem, have it fixed.

Power Windows and Other Power Options Circuit breakers in the fuse block 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 the 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. Fuses of the same amperage can be temporarily borrowed from another fuse location, if a fuse goes out. Replace the fuse as soon as you can.

5-110

Instrument Panel Fuse Block The instrument panel fuse block access door is located on the driver side edge of the instrument panel.

Fuses

AUX PWR

Usage

Rear Cargo Accessory Power Outlets

AUX PWR 2

Floor Console Power Outlets

BCM

Body Control Module

Fuses

Usage

CTSY

DDM

DIM

DSM

INFO

IS LPS

LCK 1

LCK2

LT DR

Dome Lamps, Front Passenger Side Turn Signal

Driver Door Module

Instrument Panel Back Lighting

Drive Seat Module

Infotainment System, Remote Keyless Entry System

Interior Lamps

Power Door Lock 1 (Lock Feature)

Power Door Lock 2 (Lock Feature)

Driver Side Power Window Circuit Breaker

LT STOP TRN Driver Side Turn Signal, Stoplamp

ONSTAR

OnStar®

PDM

Passenger Door Module

REAR HVAC

Rear Climate Controls

REAR SEAT

Rear Seats

5-111

Fuses

Usage

REAR WPR RT STOP TRN Passenger Side Turn Signal,

Rear Wiper

Stoplamp

STOP LAMPS

Stoplamps, Center High-Mounted Stoplamp

SWC BKLT

Steering Wheel Controls Backlight

UGDO

UNLCK1

UNLCK2

Universal Home Remote System

Power Door Lock 1 (Unlock Feature)

Power Door Lock 2 (Unlock Feature)

Harness Connector

LT DR BODY BODY

Usage

Driver Door Harness Connection Harness Connector Harness Connector

5-112

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

Harness Connector

BODY 2
BODY 1
BODY 3

Usage

Body Harness Connector 2
Body Harness Connector 1
Body Harness Connector 3

Underhood Fuse Block

Harness Connector

Usage

HEADLINER 3 Headliner Harness Connector 3
HEADLINER 2 Headliner Harness Connector 2
HEADLINER 1 Headliner Harness Connector 1
SEO/UPFITTER Special Equipment Option Upfitter

Harness Connector

Circuit Breaker

Usage

CB1

CB2
CB3
CB4

Passenger Side Power Window Circuit Breaker Passenger Seat Circuit Breaker Driver Seat Circuit Breaker Rear Sliding Window

The underhood fuse block in the engine compartment is located on the driver side of the vehicle near the battery. Lift the cover for access to the fuse/relay block. Notice: Spilling liquid on any electrical components on the vehicle may damage it. Always keep the covers on any electrical component. 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. See Engine Compartment Overview on page 5-14 for more information on its location.

5-113

Fuses

Usage

Fuses

Usage

Left Trailer Stop/Turn Lamp Engine Controls Engine Control Module, Throttle Control Right Trailer Stop/Turn Lamp

Front Washer Oxygen Sensors Vehicle Stability System, Antilock Brake System-2
Trailer Back-up Lamps

5-114

Fuses

Usage

Fuses

Usage

10

11

12

13
14
15
16
17
18
19

20

21
22
23
24
25
26
27
28

Left Low-Beam Headlamp Engine Control Module (Battery) Fuel Injectors, Ignition Coils (Right Side) Transmission Control Module (Battery) Vehicle Back-up Lamps Right Low-Beam Headlamp Air Conditioning Compressor Oxygen Sensors Transmission Controls (Ignition) Fuel Pump Rear Washer Fuel Injectors, Ignition Coils (Left Side) Trailer Park Lamps Left Park Lamps Right Park Lamps Horn Right Side High-Beam Headlamp Daytime Running Lamps (DRL) Left High-Beam Headlamp Sunroof

29

30
31

32

33
34
35
36

37

38
39
40
41
42
43

44

45
46
47

Key Ignition System, Theft Deterrent System Windshield Wiper SEO B2 Upfitter Usage (Battery) Electrically Controlled Air Suspension Climate Controls (Battery) Airbag System (Ignition) Amplifier Audio System Miscellaneous (Ignition), Cruise Control, Rear Vision Camera Airbag System (Battery) Instrument Panel Cluster Run, Accessory Auxiliary Climate Control (Ignition) Rear Defogger SEO B1 Upfitter Usage (Battery) Cigarette Lighter, Auxiliary Power Outlet Special Equipment Option (SEO) Climate Controls (Ignition) Engine Control Module (Ignition)

5-115

Fuses

60

61

62

Relays

Usage

Mid Bussed Electrical Center 1
(J-Case) Climate Control Blower (J-Case) Left Bussed Electrical Center 2
(J-Case)

Usage

A/C CMPRSR Air Conditioning Compressor FAN CNTRL

FAN HI FAN LO HDLP LO PRK LAMP PWR/TRN

Cooling Fan Control Cooling Fan High Speed Cooling Fan Low Speed Low-Beam Headlamp Parking Lamps Powertrain

REAR DEFOG Rear Defogger

RUN/CRNK

STRTR

Switched Power Starter

Fuses

Usage

50

51

52

53
54

55

56

57

58

59

Cooling Fan 1 (J-Case) Electronically Controlled Air Suspension (J-Case) Vehicle Stability System, Antilock Brake System-1 (J-Case) Cooling Fan 2 (J-Case) Starter (J-Case) Stud 2 Trailer Brake Module (J-Case) Left Bussed Electrical Center 1
(J-Case) Heated Windshield Washer System (J-Case) Four-Wheel Drive System (J-Case) Stud 1 Trailer Connector Battery Power (J-Case)

5-116

Capacities and Specifications Please refer to Recommended Fluids and Lubricants on page 6-13 for more information.

Capacities and Specifications

Capacities

English

Metric

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

information.

Application

Air Conditioning Refrigerant R134a

Cooling System

SUT Model SUV Model

15.4 qt 16.7 qt 6.0 qt 32.0 gal 1.5 qt 6.0 qt 140 lb ft

14.6 L 15.8 L 5.7 L 121.0 L 1.4 L 5.7 L 190 Y

Engine Oil with Filter Fuel Tank Transfer Case Fluid Transmission Fluid (Pan Removal and Filter Replacement) Wheel Nut Torque All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual.

Engine

6.2L V8

VIN Code

Transmission

Automatic

Spark Plug Gap 0.040 in (1.01 mm)

Engine Specifications

5-117

✍ NOTES

5-118

Section 6

Maintenance Schedule

Maintenance Schedule ......................................6-2
Introduction ...................................................6-2
Maintenance Requirements ..............................6-2
Your Vehicle and the Environment ....................6-2
Using the Maintenance Schedule ......................6-3
Scheduled Maintenance ...................................6-4
Additional Required Services ............................6-6
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
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 the vehicle warranties. See the Warranty and Owner Assistance booklet or your dealer/retailer 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 this vehicle in good working condition. Any damage caused by failure to follow scheduled maintenance might not be covered by the vehicle warranty.

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

6-2

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

carry passengers and cargo within recommended limits on the Tire and Loading Information label. See Loading the Vehicle on page 4-44. are driven on reasonable road surfaces within legal driving limits. are driven off-road in the recommended manner. See Off-Road Driving on page 4-15. 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 dealer/retailer to have a qualified technician do the work. See Doing Your Own Service Work on page 5-4.

Some maintenance services can be complex. So, unless you are technically qualified and have the necessary equipment, have your dealer/retailer do these jobs. When you go to your dealer/retailer for service, trained and supported service technicians will perform the work using genuine parts. To purchase service information, see Service Publications Ordering Information on page 7-15.

6-3

(cid:129) (cid:129) (cid:129) (cid:129) Owner Checks and Services on page 6-9 tells what should be checked, when to check it, and what can easily be done to help keep the 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 Maintenance Replacement Parts on page 6-15. When the vehicle is serviced, make sure these are used. All parts should be replaced and all necessary repairs done before you or anyone else drives the vehicle. We recommend the use of genuine parts from your dealer/retailer.

Scheduled Maintenance When the CHANGE ENGINE OIL message displays in the Driver Information Center (DIC), service is required for the vehicle. See DIC Warnings and Messages on page 3-56. Have the vehicle serviced as soon as possible within the next 600 miles (1 000 km). It is possible that, if driving under the best conditions, the engine oil life system may not indicate that vehicle service is necessary for over a year. However, the engine oil and filter must be changed at least once a year and at this time the system must be reset. Your dealer/retailer has trained service technicians who will perform this work using genuine parts and reset the system.

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

6-4

Scheduled Maintenance

Service

Maintenance I Maintenance II

Change engine oil and filter. See Engine Oil on page 5-15. Reset oil life system. See Engine Oil Life System on page 5-18. An Emission Control Service. Lubricate chassis components. See footnote #. Visually check for any leaks or damage. See footnote (j). For vehicles driven in dusty/dirty conditions: Inspect engine air cleaner filter. If necessary, replace filter. See Engine Air Cleaner/Filter on page 5-20. Rotate tires and check inflation pressures and wear. See Tire Inspection and Rotation on page 5-69 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.

Service and Miles (Kilometers)

Additional Required Services 75,000

25,000
(40 000)

50,000
(80 000)

(120 000)

100,000
(160 000)

125,000
(200 000)

150,000
(240 000)

•

•

Inspect fuel system for damage or leaks. Inspect exhaust system for loose or damaged components. Replace engine air cleaner filter. See Engine Air Cleaner/Filter on page 5-20. Change automatic transmission fluid and filter (severe service). See footnote (h). Change automatic transmission fluid and filter (normal service). Change transfer case fluid (severe service. See footnotes (g) and (l). Change transfer case fluid (normal service). See footnote (g). Replace spark plugs and inspect spark plug wires. An Emission Control Service.

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

6-6

Additional Required Services (cont’d)

Service and Miles (Kilometers)

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 (k).

25,000
(40 000)

50,000
(80 000)

75,000

(120 000)

100,000
(160 000)

125,000
(200 000)

150,000
(240 000)

•

•

Maintenance Footnotes # Lubricate the front suspension, steering linkage, and parking brake cable guides. Control arm ball joints require lubrication but 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.

(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 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.

6-7

(d) Inspect wiper blades for wear, cracking, or contamination. Clean the windshield and wiper blades, if contaminated. Replace wiper blades that are worn or damaged. See Windshield Wiper Blade Replacement on page 5-56 and Windshield, Backglass, and Wiper Blades on page 5-107 for more information. (e) Make sure the safety belt reminder light and safety belt assemblies are working properly. Look for any other loose or damaged safety belt system parts. If you see anything that might keep a safety belt system from doing its job, have it repaired. Have any torn or frayed safety belts replaced. Also see Checking the Restraint Systems on page 1-80. (f) Lubricate all key lock cylinders, hood latch assembly, secondary latch, pivots, spring anchor, release pawl, rear compartment hinges, outer liftgate handle pivot points, rear door detent link, roller mechanism, liftgate handle pivot points, latch bolt, fuel door hinge, cargo 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.

Spare tire carrier hinge and latch: Inspect for leaks and lubricate if required. Remove the setscrew at the hinge casting and add lubricant, moving the hinge back and forth periodically, until lubricant can be seen coming from the setscrew opening. Install setscrew and tighten to 7 ft lb (9 Y). See Recommended Fluids and Lubricants on page 6-13 for what lubricant to use. (g) Check vent hose at transfer case for kinks and proper installation. Check to be sure vent hose is unobstructed, clear, and free of debris. During any maintenance, if a power washer is used to clean mud and dirt from the underbody, care should be taken to not directly spray the transfer case output seals. High pressure water can overcome the seals and contaminate the transfer case fluid. Contaminated fluid will decrease the life of the transfer case and should be replaced. (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.

6-8

(i) Drain, flush, and refill cooling system. This service can be complex; you should have your dealer/retailer perform this service. See Engine Coolant on page 5-31 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) Visually inspect belt for fraying, excessive cracks, or obvious damage. Replace belt if necessary. (l) Severe Service: Change transfer case fluid if the vehicle is mainly used for trailer towing or driven in city traffic, wet environment, or high ambient temperatures.

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

It is important to check the engine oil

At Each Fuel Fill It is important to perform these underhood checks at each fuel fill. Engine Oil Level Check Notice: regularly and keep it at the proper level. Failure to keep the engine oil at the proper level can cause damage to the engine not covered by the vehicle warranty. Check the engine oil level and add the proper oil if necessary. See Engine Oil on page 5-15. Engine Coolant Level Check Check the engine coolant level and add DEX-COOL® coolant mixture if necessary. See Engine Coolant on page 5-31. 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 Inspect the vehicle’s tires and make sure they are inflated to the correct pressures. Do not forget to check the spare tire. See Inflation - Tire Pressure on page 5-63. Check to make sure the spare tire is stored securely. See Changing a Flat Tire on page 5-80. 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 5-69.

At Least Once a Year Starter Switch Check

{ CAUTION:

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

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

room around the vehicle.

2. Firmly apply both the parking brake and the regular

brake. See Parking Brake on page 2-42. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts.

3. Try to start the engine in each gear. The vehicle should start only in P (Park) or N (Neutral). If the vehicle starts in any other position, contact your dealer/retailer for service.

6-10

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.

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

2. Firmly apply the parking brake. See Parking Brake

on page 2-42. Be ready to apply the regular brake immediately if the vehicle begins to move.

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

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

The ignition should turn to LOCK/OFF only when the shift lever is in P (Park). The ignition key should come out only in LOCK/OFF.

Contact your dealer/retailer if service is required.

6-11

(cid:129) (cid:129) Parking Brake and Automatic Transmission P (Park) Mechanism Check

{ CAUTION:

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

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

To check the parking brake’s holding ability: With the engine running and the transmission in N (Neutral), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only. To check the P (Park) mechanism’s holding ability: With the engine running, shift to P (Park). Then release the parking brake followed by the regular brake.

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

6-12

(cid:129) (cid:129) Recommended Fluids and Lubricants Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer/retailer.

Usage

Fluid/Lubricant

Engine oil which meets GM Standard GM6094M and displays the American Petroleum Institute Certified for Gasoline Engines starburst symbol. To determine the proper viscosity for your vehicle’s engine, see Engine Oil on page 5-15.

50/50 mixture of clean, drinkable water and use only DEX-COOL® Coolant. See Engine Coolant on page 5-31. Delco® Supreme 11 Brake Fluid or equivalent DOT-3 brake fluid.

Optikleen® Washer Solvent.

Engine Oil

Engine Coolant

Hydraulic Brake

System

Windshield

Washer

Usage

Fluid/Lubricant

Power Steering

System

Automatic

Transmission

GM Power Steering Fluid (GM Part No. U.S. 89021184, in Canada 89021186). DEXRON®-VI Automatic Transmission Fluid.

Key Lock Cylinders

Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241, in Canada 10953474).

Chassis

Lubrication

Front and Rear Axle

Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.

SAE 75W-90
Synthetic Axle Lubricant (GM Part No. U.S. 89021677, in Canada 89021678) meeting GM Specification 9986115.

Transfer Case DEXRON®-VI Automatic

Transmission Fluid.

6-13

Usage

Fluid/Lubricant

Usage

Fluid/Lubricant

Front Axle Propshaft

Spline

Hood Hinges

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

Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241, in Canada 10953474).

Outer Tailgate Handle Pivot

Points