1997 GMC Savana Owners Manual

made especially for your automatic transmission. Damage caused by fluid other than DEXRON-I11 is not covered by your new vehicle warranty.

0 After adding fluid, recheck the fluid level as

described under “How to Check.”

0 When the correct fluid level is obtained, push the dipstick back in all the way; then flip the handle down to lock the dipstick in place.

Engine Coolant DEX-COOL 8 engine coolant. This coolant is designed The cooling s stem in your vehicle is filled with to remain in your vehicle for 5 years or 150,000 miles (240 000 km) whichever occurs first, if you add only DEX-COOL’ extended life coolant. The following explains your cooling s y s r e ~ And how to add coolant when it is low. If you have a problem with engine overheating, see “Engine Overheating” in the Index. A 50/50 mixture of water and DEX-COOL’ coolant will: 0 Give freezing protection down to -34°F (-37°C). 0 Give boiling protection up to 265 “F (129°C).

Protect against rust and corrosion. Help keep the proper engine temperature. Let the warning lights and gages work as they should.

Rear Axle When to Check and Change Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant and when to change it. See “Scheduled Maintenance Services” in the Index. How to Check Lubricant

If the level is below the bottom of the filler plug hole, you’ll need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole.

What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See “Recommended Fluids and Lubricants” in the Index.

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NOTICE:

When adding coolant, it is important that you use only DEX-COOL@ (silicate-free) coolant. If coolant other than DEX-COOL@ is added to the system, premature engine, heater core or engine coolant will require change sooner -- at radiator corrosion may result. In addition, the 30,000 miles (50 000 km) or 24 months, whichever occurs first. Damage caused by the use of coolant other than DEX-COOL@ is not covered by your new vehicle warranty.

What to Use Use a mixture of one-half clean water (preferably distilled) and one-half DEX-COOL@ coolant which won’t damage aluminum parts. If you use this mixture, you don’t need to add anything else.

Adding only plain water to your cooling system can be dangerous. Plain water, or some other liquid like alcohol, can boil before the proper coolant mix will. Your vehicle’s coolant warning system is set for the proper coolant mix. With plain water or the wrong mix, your engine could get too hot but you wouldn’t get the overheat warning. Your engine could catch fire and you or others could be burned. Use a 50/50 mix of clean water and DEX-COOL@ coolant.

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Checking Coolant

When yo bur engine is cold, the coolant level sho FULL COLD, or a little higher.

uld be at

NOTICE:

If you use an improper coolant mix, your engine could overheat and be badly damaged. The repair cost wouldn’t be covered by your warranty. Too much water in the mix can freeze and crack the engine, radiator, heater core and other parts.

If you have to add coolant more than four times a year, have your dealer check your cooling system.

I NOTICE:

If you use the proper coolant, you don’t have to add extra inhibitors or additives which claim to improve the system. These can be harmful.

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Adding Coolant If you need more coolant, add the proper DEX-COOL@ coolant mixture at the coolant recovery tank.

lbrning the radiator pressure cap when the engine and radiator are hot can allow steam and scalding liquids to blow out and burn you badly. With the coolant recovery tank, you will almost never have to add coolant at the radiator.

Never turn the radiator pressure cap -- even a little -- when the engine and radiator are hot. -

Add coolant mixture at the recovery tank, but be careful not to spill it.

You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol, and it will burn if the engine parts are hot enough. Don't spill coolant on a hot engine.

Radiator Pressure Cap The radiator pressure cap must be tightly installed with the arrows on the cap lined up with the overflow tube on the radiator filler neck.

NOTICE:

Your radiator cap is a pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage from overheating. Be sure the arrows on the cap line up with the overflow tube on the radiator filler neck.

Thermostat Engine coolant temperature is controlled by a thermostat in the engine cooling system. The thermostat stops the flow of coolant through the radiator until the coolant reaches a preset temperature. When you replace your thermostat, an AC@ thermostat is recommended. Power Steering Fluid

When to Check Power Steering Fluid It is not necessary to regularly check power steering fluid unless you suspect there is a leak in the system or you hear an unusual noise. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. How To Check Power Steering Fluid When the engine compartment is cool, wipe the cap and top of the reservoir clean, then unscrew the cap and wipe the dipstick with a clean rag. Replace the cap and completely tighten it. Then remove the cap again and look at the fluid level on the dipstick. The level should be at the FULL COLD mark. If necessary, add only enough fluid to bring the level up to the mark. To prevent brake fluid contamination never check or fill the power steering reservoir with the master cylinder cover off. What to Use To determine what kind of fluid to use, see “Recommended Fluids and Lubricants” in the Index. Always use the proper fluid. Failure to use the proper fluid can cause leaks and damage hoses and seals.

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Windshield Washer Fluid What to Use When you need windshield washer fluid, be sure to read the manufacturer’s instructions before use. If you will be operating your vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing. Adding Washer Fluid

Open the cap labeled WASHER FLUID. Add washer fluid until the tank is full.

NOTICE:

When using concentrated washer fluid, follow the manufacturer’s instructions for adding water. Don’t mix water with ready-to-use washer fluid. Water can cause the solution to freeze and damage your washer fluid tank and other parts of the washer system. Also, water doesn’t clean as well as washer fluid. Fill your washer fluid tank only three-quarters full when it’s very cold. This allows for expansion if freezing occurs, which could damage the tank if it is completely full. Don’t use radiator antifreeze in your windshield washer. It can damage your washer system and paint.

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Brakes Brake Fluid

Your brake master cylinder reservoir is here. It is filled with DOT-3 brake fluid. There are only two reasons why the brake fluid level in the reservoir might go down. The first is that the brake fluid goes down to an acceptable level during normal brake lining wear. When new linings are put in, the fluid level goes back up. The other reason is that fluid is Zeaking out of the brake system. If it is, you should have

your brake system fixed, since a leak means that sooner or later your brakes won’t work well, or won’t work at all. So, it isn’t a good idea to “top off’ your brake fluid. Adding brake fluid won’t correct a leak. If you add fluid when your linings are worn, then you’ll have too much fluid when you get new brake linings. You should add (or remove) brake fluid, as necessary, only when work is dQne on the brake hydraulic system.

If you have too much brake fluid, it can spill on the engine. The fluid will burn if the engine is hot enough. You or others could be burned, and your vehicle could be damaged. Add brake fluid only when work is done on the brake hydraulic system.

Refer to the Maintenance Schedule to determine when to check your brake fluid. See “Periodic Maintenance Inspections” in the Index.

Checking Brake Fluid

(GM Part

What to Add When you do need brake fluid, use only DOT-3 brake fluid -- such as Delco Supreme 11 No. 12377967). Use new brake fluid from a sealed container only. Always clean the brake fluid reservoir cap and the area around the cap before removing it. This will help keep dirt from entering the reservoir.

/I\ CAUTION:

With the wrong kind of fluid in your brake system, your brakes may not work well, or they may not even work at all. This could cause a crash. Always use the proper brake fluid.

You can check the brake fluid without taking off the cap. Just look at the windows on the brake fluid reservoir. The fluid levels should be above MIN. If they aren’t, have your brake system checked to see if there is a leak. After work is done on the brake hydraulic system, make sure the levels are above MIN and below the top of each window.

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NOTICE:

Using the wrong fluid can badly damage brake system parts. For example, just a few drops of mineral-based oil, such as engine oil, in your brake system can damage brake system parts so badly that they’ll have to be replaced. Don’t let someone put in the wrong kind of fluid. If’ you spill brake fluid on your vehicle’s painted surfaces, the paint finish can be damaged. Be careful not to spill brake fluid on your vehicle. If you do, wash it off immediately. See “Appearance Care” in the Index.

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Brake Wear Your vehicle has front disc brakes and rear drum brakes. Disc brake pads have built-in wear indicators that make a high-pitched warning sound when the brake pads are worn and new pads are needed. The sound may come and go or be heard all the time your vehicle is moving (except when you are pushing on the brake pedal firmly). ,

The brake wear warning sound means that soon your brakes won’t work well. That could lead to an accident. When you hear the brake wear warning sound, have your vehicle serviced.

I I

I NOTICE:

Continuing to drive with worn-out brake pads could result in costly brake repair.

Some driving conditions or climates may cause a brake squeal when the brakes are first applied or lightly applied. This does not mean something is wrong with your brakes. Properly torqued wheel nuts are necessary to help prevent brake pulsation. When tires are rotated, inspect brake pads for wear and evenly torque wheel nuts in the proper sequence to GM specifications. Your rear drum brakes don’t have wear indicators, but if you ever hear a rear brake rubbing noise, have the rear brake linings inspected. Also, the rear brake drums should be removed and inspected each time the tires are removed for rotation or changing. When you have the front brake pads replaced, have the rear brakes inspected, too. Brake linings should always be replaced as complete axle sets. See “Brake System Inspection” in Section 7 of this manual under Part C “Periodic Maintenance Inspections”. Brake Pedal Travel See your dealer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign of brake trouble.

Brake Adjustment Every time you make a brake stop, your disc brakes adjust for wear. If your brake pedal goes down farther than normal, your rear drum brakes may need adjustment. Adjust them by backing up and firmly applying the brakes a few times. Replacing Brake System Parts The braking system on a modern vehicle is complex. Its many parts have to be of top quality and work well together if the vehicle is to have really good braking. Your vehicle was designed and tested with top-quality GM brake parts. When you replace parts of your braking system -- for example, when your brake linings wear down and you have to have new ones put in -- be sure you get new approved GM replacement parts. If you don’t, your brakes may no longer work properly. For example, if someone puts in brake linings that are wrong for your vehicle, the balance between your front and rear brakes can change -- for the worse. The braking performance you’ve come to expect can change in many other ways if someone puts in the wrong replacement brake parts.

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Battery Every new vehicle has a Delco Freedom@ battery. You never have to add water to one of these. When it’s time for a new battery, we recommend a Delco Freedom battery. Get one that has the replacement number shown on the original battery’s label. Vehicle Storage If you’re not going to drive your vehicle for 25 days or more, take off the black, negative (-) cable from the battery. This will help keep your battery from running down.

A CAUTION:

Batteries have acid that can Durn you and gas that can explode. You can be badly hurt if you aren’t careful. See “Jump Starting” in the Index for tips on working around a battery without getting hurt.

Contact your dealer to learn how to prepare your vehicle for longer storage periods. Also, for your audio system, see “Theft-Deterrent Feature” in the Index. Bulb Replacement Before you replace any bulbs, be sure that all the lamps are off and the engine isn’t running. See “Replacement Bulbs” in the index for the proper types of bulbs to use. Halogen Bulbs A CAUTION:

Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb package.

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Headlamps You have either a sealed beam headlamp system or a composite system.

Sealed Beam Headlamps

1. Remove the four screws from the headlamp retainer.

Pull the retainer out and set it aside.

2. Unplug the lamp assembly from the connector. 3. Install a new headlamp. 4. Reverse Steps 1 through 3 to reinstall the headlamp.

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Composite Headlamps 1. Open the hood. 2. Locate the rear side of each of the headlamps.

4. On the passenger side, turn the bulb clockwise one

quarter turn. Also, to remove the bulb on the passenger side, you will need to move the battery.

3. Without removing the headlamp assembly itself,

remove the bulb assembly from the back of the headlamp on the driver’s side by turning the bulb counterclockwise one quarter turn.

5. Install a new bulb. Do not handle the glass part of

the bulb.

6. Reverse Steps 3 through 4 to reinstall the headlamp.

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Front ParkingITbrn Signal Lamps To replace the front parkingkurn signal lamps:

2. Remove the lamp from the grille.

1. Remove the outer screws from the parkinghum

signal lamp lens assembly. (There are either two or four screws, depending on your vehicle’s trim level.)

Sidemarker Lamps

3. Remove the bulb assembly from the back of the lens

and replace the bulb. Reverse Steps 1 through 3 to replace the bulb. Turn the socket clockwise to replace it in the lens assembly.

1. Remove the screw from the top of the lens.

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Taillamps 1. Open the rear door.

2. Un-clip the bottom of the lamp from the grille. 3. Remove the bulb by twisting it out of the socket. Turn the bulb to remove it. Install the new bulb.

4. Reverse these steps to reinstall the lamp.

2. Push the socket protector until you can see

the fasteners.

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3. Remove the nuts with a deep socket wrench.

4. Remove the hidden upper nuts.

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5. Lift the lamp as you

rotate it toward the rear of the vehicle.

6. Turn the sockets counterclockwise to remove.

Windshield Wiper Blade Replacement

7. Turn the bulb counterclockwise to remove it. Install

the new bulb.

8. Reverse the above steps to reinstall the lamp.

See “Normal Maintenance Replacement Parts” in the Index for the proper type of replacement blade. Replacement blades come in different types and are removed in different ways. To remove the type with a release clip: 1. To remove the old wiper blades, lift the wiper arm

until it locks into a vertical position.

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2. Press down on the blade assembly pivot locking tab.

Pull down on the blade assembly to release it from the wiper arm hook.

3. Remove the insert from the blade assembly. The

insert has two notches at one end that are locked by bottom claws of the blade assembly. At the notched end, pull the insert from the blade assembly.

4. To install the new wiper insert, slide the notched end

last, into the end with two blade claws. Slide the insert all the way through the blade claws at the opposite end.

5. Be sure that the notches are locked by the bottom claws. Make sure that all other claws are properly locked on both sides of the insert slot.

6. Put the blade assembly pivot in the wiper arm hook. Pull

up until the pivot locking tab locks

in the hook slot. 7. Carefully lower the wiper a m and blade assembly

into the windshield.

Tires Your new vehicle comes with high-quality tires made by a leading tire manufacturer. If you ever have questions about your tire warranty and where to obtain service, see your GM Warranty booklet for details.

& CAUTI-”’:

Poorly maintained and improperly used tires are dangerous.

Overloading your tires can cause overheating as a result of too much friction. You could have an air-out and a serious accident. See “Loading Your Vehicle’’ in the Index. Underinflated tires pose the same danger as overloaded tires. The resulting accident could cause serious injury. Check all tires frequently to maintain the recommended pressure. Tire pressure should be checked when your tires are cold. 0 Overinflated tires are more likely to be impact -- such as when you hit a pothole. cut, punctured or broken by a sudden Keep tires at the recommended pressure. 0 Worn, old tires can cause accidents. If your

tread is badly worn, or if your tires have been damaged, replace them.

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Inflation -- Tire Pressure

The Certificationmire label, which is on the rear edge of the driver’s door, shows the correct inflation pressures for your tires when they’re cold. “Cold” means your vehicle has been sitting for at least three hours or driven no more than 1 mile (1.6 km).

NOTICE:

Don’t let anyone tell you that underinflation or overinflation is all right. It’s not. If your tires don’t have enough air (underinflation), you can get the following: @ Too much flexing

Too much heat Tire overloading Bad wear Bad handling Bad fuel economy.

NOTICE: (Continued)

NOTICE: (Continued)

If your tires have too much air (overinflation), you can get the following:

Unusual wear Bad handling Rough ride Needless damage from road hazards.

When to Check Check your tires once a month or more. Also, check the tire pressure of the spare tire.

How to Check Use a good quality pocket-type gage to check tire pressure. You can’t tell if your tires are properly inflated simply by looking at them. Radial tires may look properly inflated even when they’re underinflated. Be sure to put the valve caps back on the valve stems. They help prevent leaks by keeping out dirt and moisture.

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Tire Inspection and Rotation Tires should be rotated every 6,000 to 8,000 miles (10 000 to 13 000 km). Any time you notice unusual wear, rotate your tires as soon as possible and check wheel alignment. Also check for damaged tires or wheels. See “When It’s Time for New Tires” and “Wheel Replacement” later in this section for more information. If your vehicle has dual rear wheels, also see “Dual Tire Operation” later in this section. The purpose of regular rotation is to achieve more uniform wear for all tires on the vehicle. The first rotation is the most important. See “Scheduled Maintenance Services” in the Index for scheduled rotation intervals.

FRT

FRT

1/1

If your vehicle has single rear wheels, always use one of the correct rotation patterns shown here when rotating your tires.

If your vehicle has dual rear wheels, always use one of the correct rotation patterns shown here when rotating your tires. When you install dual wheels, be sure the vent holes in the inner and outer wheels on each side are lined up.

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After the tires have been rotated, adjust the front and rear inflation pressures as shown on the Certification/Tire label. Make certain that all wheel nuts are properly tightened. See “Wheel Nut Torque” in the Index.

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

When It’s Time for New Tires

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

You need a new tire if any of the following statements are true: 0 You can see the indicators at three or more places

around the tire.

0 You can see cord or fabric showing through the

tire’s rubber.

0 The tread or sidewall is cracked, cut or snagged deep

enough to show cord or fabric. The tire has a bump, bulge or split.

0 The tire has a puncture, cut or other damage that

can’t be repaired well because of the size or location of the damage.

Dual Tire Operation When the vehicle is new, or whenever a wheel, wheel bolt or wheel nut is replaced, check the wheel nut torque after 100, 1,000 and 6,000 miles (160, 1 600 and 10 000 km) of driving. For proper torque, see “Wheel Nut Torque’’ in the Index. The outer tire on a dual wheel setup generally wears faster than the inner tire. Your tires will wear more evenly and last longer if you rotate the tires periodically. If you’re going to be doing a lot of driving on high-crown roads, you can reduce tire wear by adding 5 psi (35 kPa) to the tire pressure in the outer tires. Be sure to return to the recommended pressures when no longer driving under those conditions. See “Changing a Flat Tire” in the Index for more information.

Buying New Tires To find out what kind and size of tires you need, look at the Certificationmire label. The tires installed on your vehicle when it was new had a Tire Performance Criteria Specification (TPC Spec) number on each tire’s sidewall. When you get new tires, get ones with that same TPC Spec number. That way your vehicle will continue to have tires that are designed to give proper endurance, handling, speed rating, traction, ride and other things during normal service on your vehicle. If your tires have an all-season tread design, the TPC number will be followed by an “MS” (for mud and snow). If you ever replace your tires with those not having a TPC Spec number, make sure they are the same size, load range, speed rating and construction type (bias, bias-belted or radial) as your original tires.

If you operate your vehicle with a tire that is badly underinflated, the tire can overheat. An overheated tire can lose air suddenly or catch fire. You or others could be injured. Be sure all tires (including the spare) are properly inflated.

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

Uniform Tire Quality Grading The following information relates to the system developed by the United States National Highway Traffic Safety Administration, which grades tires by treadwear, traction and temperature performance. (This applies only to vehicles sold in the United States.) The grades are molded on the sidewalls of most passenger car tires. The Uniform Tire Quality Grading system does not apply to deep tread, winter-type snow tires, space-saver or temporary use spare tires, tires with nominal rim diameters of 10 to 12 inches (25 to 30 cm), or to some limited-production tires. While the tires available on General Motors passenger cars and light trucks may vary with respect to these

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grades, they must also conform to Federal safety requirements and additional General Motors Tire Performance Criteria (TPC) standards. Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one and a half (1 1/2) times as well on the government course as a tire graded .loo. 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 -- A, B, C The traction grades, from highest to lowest, are A, B, and C, and they 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 braking (straightahead) traction tests and does not include cornering (turning) traction.

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 wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance.

Scheduled wheel alignment and wheel balancing are not needed. However, if you notice unusual tire wear or your vehicle pulling one way or the other, the alignment may need to be reset. If you notice your vehicle vibrating when driving on a smooth road, your wheels may need to be rebalanced. 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 GM dealer if any of these conditions exist. Your dealer will know the kind of wheel you need. Each new wheel should have the same load-carrying capacity, diameter, width, offset and be mounted the same way as the one it replaces. If you need to replace any of your wheels, wheel bolts or wheel nuts, replace them only with new GM original equipment parts. This way, you will be sure to have the right wheel, wheel bolts and wheel nuts for your vehicle.

Whenever a wheel, wheel bolt or wheel nut is replaced on a dual wheel setup, check the wheel nut torque after 100, 1,000 and 6,000 miles (160,l 600 and 10 000 km) of driving. For proper torque, see “Wheel Nut Torque” in the Index. See “Changing a Flat Tire” in the Index for more information. Used Replacement WP-?ls

A CAUTIP’

Putting a used wheel on your vehicle is dangerous. You can’t know how it’s been used or how far it’s been driven. It could fail suddenly and cause an accident. If you have to replace a wheel, use a new GM original equipment wheel.

L dT’^Y:

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.

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Tire Chains

NOTICE:

Use tire chains only where legal and only when you must. Use chains that are the proper size for your tires. Install them on the tires of the rear axle. Tighten them as tightly as possible with the ends securely fastened. Drive slowly and follow the chain manufacturer’s instructions. If you can hear the chains contacting your vehicle, stop and retighten them. If the contact continues, slow down until it stops. Driving too fast or spinning the wheels with ’ chains on will damage your vehicle.

Appearance Care Remember, cleaning products can be hazardous. Some are toxic. Others can burst into flame if you strike a match or get them on a hot part of the vehicle. Some are dangerous if you breathe their fumes in a closed space. When you use anything from a container to clean your vehicle, be sure to follow the manufacturer’s warnings and instructions. And always open your doors or windows when you’re cleaning the inside. Never use these to clean your vehicle:

Gasoline 0 Benzene 0 Naphtha 0 Carbon Tetrachloride

Acetone Paint Thinner

0 Turpentine 0 Lacquer Thinner

Nail Polish Remover

They can all be hazardous -- some more than others -- and they can all damage your vehicle, too.

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I

Don’t use any of these unless this manual says you can. In many uses, these will damage your vehicle:

Alcohol

0 Laundry Soap

Bleach Reducing Agents

Cleaning the Inside of Your Vehicle Use a vacuum cleaner often to get rid of dust and loose dirt. Wipe vinyl or leather with a clean, damp cloth. Your GM dealer has two cleaners, a solvent-type spot lifter and a foam-type powdered cleaner. They will clean normal spots and stains very well. Do not use them on vinyl or leather. Here are some cleaning tips: 1. Always read the instructions on the cleaner label. 2. Clean up stains as soon as you can -- before they set. 3. Use a clean cloth or sponge, and change to a clean area often. A soft brush may be used if stains are stubborn. 4. Use solvent-type cleaners in a well-ventilated area

only. If you use them, don’t saturate the stained area.

5. If a ring forms after spot cleaning, clean the entire

area immediately or it will set.

Using Foam-Type Cleaner on Fabric 1. 2.

Vacuum and brush the area to remove any loose dirt. Always clean a whole trim panel or section. Mask surrounding trim along stitch or welt lines. Mix Multi-Purpose Powdered Cleaner following the directions on the container label. Use suds only and apply with a clean sponge. Don’t saturate the material and don’t rub it roughly. As soon as you’ve cleaned the section, use a sponge to remove the suds. Rinse the section with a clean, wet sponge. Wipe off what’s left with a slightly damp paper towel or cloth. Dry it immediately with a blow dryer. Wipe with a clean cloth.

3.

4.

5.

6. 7.

8. 9.

Using Solvent-Type Cleaner on Fabric First, see if you have to use solvent-type cleaner at all. Some spots and stains will clean off better with just water and mild soap. If you need to use a solvent: 1. Gently scrape excess soil from the trim material with

a clean, dull knife or scraper.

2. Use very little cleaner, light pressure and clean cloths (preferably cheesecloth). Cleaning should start at the outside of the stain, “feathering” toward the center.

3. Keep changing to a clean section of the cloth. 4. When you clean a stain from fabric, immediately dry the area with a blow dryer to help prevent a cleaning ring.

Fabric Protection Your vehicle has upholstery and carpet that has been treated with Scotchgard Fabric Protector, a 3M product. It protects fabrics by repelling oil and water, which are the carriers of most stains. Even with this protection, you still need to clean your upholstery and carpet often to keep it looking new. Further information on cleaning is available by calling 1-800-433-3296 (in Minnesota, 1-800-642-6167).

Special Cleaning Problems Greasy or Oily Stains Stains caused by grease, oil, butter, margarine, shoe polish, coffee with cream, chewing gum, cosmetic creams, vegetable oils, wax crayon, tar and asphalt can be removed as follows: 1. Carefully scrape off excess stain. 2. Follow the solvent-type instructions described earlier. Shoe polish, wax crayon, tar and asphalt will stain if left on a vehicle’s seat fabric. They should be removed as soon as possible. Be careful, because the cleaner will dissolve them and may cause them to spread.

Non-Greasy Stains Stains caused by catsup, coffee (black), egg, fruit, fruit juice, milk, soft drinks, wine, vomit, urine and blood can be removed as follows: 1. Carefully scrape off excess stain, then sponge the

soiled area with cool water.

2. If a stain remains, follow the foam-type instructions

described earlier.

3. If an odor lingers after cleaning vomit or urine, treat the area with a waterhaking soda solution: 1 teaspoon (5 ml) of baking soda to 1 cup (250 ml) of lukewarm water.

4. If needed, clean lightly with solvent-type cleaner. Combination Stains Stains caused by candy, ice cream, mayonnaise, chili sauce and unknown stains can be removed as follows: 1. Carefully scrape off excess stain. 2. Clean with cool water and allow to dry. 3. If a stain remains, clean it with solvent-type cleaner. Cleaning Vinyl Use warm water and a clean cloth. 0 Rub with a clean, damp cloth to remove dirt. You

may have to do it more than once. Things like tar, asphalt and shoe polish will stain if you don’t get them off quickly. Use a clean cloth and a vinyVleather cleaner. See your dealer for this product.

Cleaning Leather Use a soft cloth with lukewarm water and a mild soap or saddle soap and wipe dry with a soft cloth. Then, let the leather dry naturally. Do not use heat to dry.

For stubborn stains, use a leather cleaner. See your dealer for this product. Never use oils, varnishes, solvent-based or abrasive cleaners, furniture polish or shoe polish on leather. Soiled or stained leather should be cleaned immediately. If dirt is allowed to work into the finish, it can harm the leather.

Cleaning the Top of the Instrument Panel Use only mild soap and water to clean the top surfaces of the instrument panel. Sprays containing silicones or waxes may cause annoying reflections in the windshield and even make it difficult to see through the windshield under certain conditions.

6-52

Care of Safety Belts Keep belts clean and dry.

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.

Cleaning Glass Surfaces Glass should be cleaned often. GM Glass Cleaner (GM Part No. 1050427) or a liquid household glass cleaner will remove normal tobacco smoke and dust films on interior glass. Don’t use abrasive cleaners on glass, because they may cause scratches. Avoid placing decals on the inside rear window, since they may have to be scraped off later. If abrasive cleaners are used on the inside of the rear window, an electric defogger element may be damaged. Any temporary license should not be attached across the defogger grid.

Cleaning the Outside of the 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 GM Glass Cleaner, Bon Ami@ Powder (non-scratching glass cleaning powder), GM Part No. 105001 1. The windshield is clean if beads do not form when you rinse it with water. Grime from the windshield will stick to the wiper blades and affect their performance. Clean the blade by wiping vigorously with a cloth soaked in full-strength windshield washer solvent. Then rinse the blade with water. Check the wiper blades and clean them as necessary; replace worn blades. Weatherstrips Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth at least every six months. During very cold, damp weather more frequent application may be required. (See “Recommended Fluids and Lubricants” in the Index.)

6-53

Cleaning the Outside of Your Vehicle The paint finish on your vehicle provides beauty, depth of color, gloss retention and durability. Washing Your Vehicle The best way to preserve your vehicle’s finish is to keep it clean by washing it often with lukewarm or cold water. Don’t wash your vehicle in the direct rays of the sun. Don’t use strong soaps or chemical detergents. Use liquid hand, dish or car washing (mild detergent) soaps. Don’t 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 vehicle washes may cause water to enter your vehicle. Cleaning Exterior LampsLenses Use lukewarm or cold water, a soft cloth and a liquid hand, dish or vehicle washing (mild detergent) soap to clean exterior lamps and lenses. Follow instructions under “Washing Your Vehicle.”

6-54

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 “Appearance Care and Materials” in the Index.) Your GM manufactured vehicle may have 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 basecoatklearcoat paint finish.

KNOTICE:

Machine compounding or aggressive polishing on a basecoatlclearcoat paint finish may dull the finish or leave swirl marks.

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. Cleaning Aluminum Wheels (If Equipped) Keep your 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. The surface of these wheels is similar to the painted surface of your vehicle. Don’t use strong soaps, chemicals, abrasive polishes, abrasive cleaners or

abrasive cleaning brushes on them because you could damage the surface. Don’t take your vehicle through an automatic car wash that has silicon carbide tire cleaning brushes. These brushes can also damage the surface of these wheels. Cleaning Tires To clean your tires, use a stiff brush with a tire cleaner.

I NOTICE:

When applying a tire dressing always take care to wipe off any overspray or splash from all painted surfaces on the body or wheels of the vehicle. Petroleum-based products may damage the paint finish.

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

I

Chemical Paint Spotting Some weather and atmospheric conditions can create a chemical fallout. Airborne pollutants can fall upon and attack painted surfaces on your vehicle. This damage can take two forms: blotchy, ringlet-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. This applies only to materials manufactured and sold by General Motors. Bodies, body conversions or equipment not made or sold by General Motors are not covered.

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 a major repair expense. Minor chips and scratches can be repaired with touch-up materials available from your dealer or other service outlets. Larger areas of finish damage can be corrected in your 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, accelerated corrosion (rust) can occur 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 other debris can collect. Dirt packed in closed areas of the frame should be loosened before being flushed. Your dealer or an underbody car washing system can do this for you.

6-56

Appearance Care Materials Chart

6-57

Service Parts Identification Label You’ll find this label on the front passenger door frame. It’s very helpful if you ever need to order parts. On this label is:

your VIN, the model designation,

0 paint information and

a list of all production options and special equipment.

Be sure that this label is not removed from the vehicle.

Vehicle Identification Number (VIN)

I 111 1111II IIII 11111111111111 IIIIIIII 11111111 11111111 I IIIIIII I -1

111 111111 II. 111111I1 111111111111 111111111 11-

I1 11111.11 1.11

SAMPLE4UXVM072675

7 \ ASSEMBLY

PLANT

ENGINE A

CODE MODEL YEAR

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 8th character in your VIN is the engine code. This code will help you identify your engine, specifications and replacement parts.

6-58

Electrical System Add-on Electrical Equipment

I NOTICE:

Don’t add anything electrical to your vehicle unless you check with your dealer first. Some electrical equipment can damage your vehicle and the damage wouldn’t be covered by your warranty. Some add-on electrical equipment can keep other components from working as they should.

Your vehicle has an air bag system. Before attempting to add anything electrical to your vehicle, see “Servicing Your Air Bag-Equipped Vehicle” in the Index.

Headlamp Wiring The headlamp wiring is protected by a circuit breaker in the lamp switch. An electrical overload will cause the lamps to flicker on and off, or in some cases to remain off. If this happens, have your headlamp wiring checked right away. Windshield Wiper Fuses The windshield wiper motor is protected by a circuit breaker and a fuse. If the motor overheats due to heavy snow, etc., the wiper will stop until the motor cools. Although the circuit is protected from electrical overload, overload due to heavy snow, etc., may cause wiper linkage damage. Always clear ice and heavy snow from the the windshield before using the windshield wipers. If the overload is caused by some electrical problem and not snow, etc., be sure to get it fixed.

6-59

Instrument Panel Fuse Block

The fuse block access door is on the driver’s side of the instrument panel above the hood release lever. You can remove the cover by turning the fastener counterclockwise.

Be sure to use the correct fuse. If you ever have a problem on the road and don’t have a spare fuse, you can “borrow” one of the correct value. 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 of the value you need. Replace it as soon as you can. See “Fuses and Circuit Breakers” in the Index for more information.

FUSE BLOCK INFORMATION

You can remove fuses with a fuse extractor. The fuse extractor is mounted to the fuse block access door. 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.

6-60

POSITION

1. 2. 3. 4.

5. 6. 7. 8. 9.

10. 11. 12. 13. 14.

15. 16.

NAME STOP HTD MIR CTSY GAUGES

HAZARD CRUISE PWR AUX Crank PARK LPS

AIR BAGS WIPER HTR-A/C CIG LTR ILLUM

DRL TURN B/U

CIRCUITS PROTECTED Stop/CHMSL, Stoplamps Electric Heated Mirrors Courtesy Lamps, Dome/RDG Lamps, Vanity Mirrors, Power Mirrors IP Cluster, DRL Relay, DRL Module, HDLP Switch, Keyless Entry Illumination, Low Coolant Module, CHIME Module, DRAB Module Hazard LampdCHIME Module Cruise Control Auxiliary Power Outlet, ALDL

License Plate Lamp, Parking Lamps, Taillamps, Front Sidemarkers, Glove Box Ashtray SDM Wiper Motor, Washer Pump A/C, A/C Blower, High Blower Relay, HTD Mirror Power Amp, Cigarette Lighter, Door Lock Relay LP Cluster, HVAC Controls, RR HVAC Controls, IP Switches, Radio Illumination, Door Switch Illumination DRL Relay Front Turn, RR Turn, Back-up Lamps, BTSI Solenoid

6-61

POSITION

17. 18. 19. 20. 21. 22. 23. 24. A.

B.

NAME RADIO- 1 BRAKE RADIO-B TRANS STRGISECURITY RR DEFOG Not Used RR HVAC PWR ACCY

PWR WDO

CIRCUITS PROTECTED Radio (Ign, Accy) 4WAL PCM, ABS, Cruise Control Radio (Battery), Power Antenna PRNDL, Automatic Transmission EVO Steering, European Security System Rear Window Defog

RR HVAC Controls, HIGH, MED, LOW Relays Power Door Lock, Six-Way Power Seat, Keyless Entry Illumination Module Power Windows

Do not use fuses of higher amperage than those recommended above. Fuse amperage levels are also imprinted on the fuse panel under the dash.

6-62

Engine Compartment Fuse Relay Center The fuse block is on the driver's side of the engine compartment at the rear.

[-I [T]

Name BLOWER ABS

Circuits Protected Blower Motor Electronic Brake Control Module

Name IGN-B IGN-A BATT LIGHTING

RR BLOWER

ENG- 1

A/C SPARE AUX A AUX-B RH-HDLP

Circuits Protected Ignition Switch Starter Relay, Ignition Switch Instrument Panel Fuse Block Instrument Panel Fuse Block, Headlamp Switch Rear Auxiliary Blower Motor Relays Heated 0 2 Sensors, Mass Air Flow Sensor, EGR Valve Solenoid, Evap Canister Purge Valve, Crankshaft Position Sensor, Secondary Air Injection Relay (Diesel), Water in Fuel Sensor (Diesel), Fuel Heater (Diesel), Glowplug Relay (Diesel), Wastegate Solenoid (Diesel) Air Conditioning Clutch Relay Spare Fuses Upfitter Provisions Upfitter Provisions Right-hand Headlamp (Export Only)

6-63

Capacities and Specifications Replacement Parts Replacement part numbers listed in this section are based on the latest information available at the time of printing, and are subject to change. If a part listed in this manual is not the same as the part used in your vehicle when it was built, or if you have any questions, please contact your GM truck dealer. These specifications are for information only. If you have any questions, see the service manual for the chassis or refer to the body manufacturer’s publications.

Circuits Protected Right-hand High-beam Headlamp (Export Only) Ignition Coil, Crankshaft Position Sensor, VCM, Fuel Injectors, Coil Driver Horn Relay, Underhood Lamp( s) Left-hand Headlamp (Export Only) Left-hand High-beam Headlamp (Export Only) PCM, Fuel Solenoid Driver, Engine Shutoff Solenoid Air Conditioning Clutch Relay Fuel Pump Relay, VCM, PCM, Fuel Pump and Engine Oil Pressure Switch

Name RH-HIBM

ECM-I

HORN LH-HDLP

LH-HIBM

FUEL SOL

IGN-E ECM-B

6-64

Engine Identification -- Gasoline Engines Engine Type VIN Code Fuel System

“VORTEC”5000 V6 CSFI’

“VORTEC”4300

]Central Sequential Fuel Injection 2Sequential Fuel Injection

“VORTEC”5700

“VORTEC”7400

V8

CSFI*

V8 CSFI’

V8

SF12

TORQUE

(190 N-m)

140

ft-lb

Wheel Nut Torque MODEL All Cooling System Capacity ENGINE “VORTEC”4300 “VORTEC”5000 “VORTEC”5700 “VORTEC”7400

QTJ

1 Without Rear Heater* 11 Quarts (10.4 L) 17 Quarts (16 L) 17 Quarts (16 L) 23 Quarts (2 1.8 L)

rl With Rear Heater 8 14 Quarts (13.2 L) 20 Quarts (18.9 L) 20 Quarts (18.9 L) 26 Quarts (24.6 L)

After refill, the level MUST be checked as outlined under “Engine Cooling System” in Section 5. *All quantities are approximate.

6-65

Fuel Tank Capacity TYPE Standard Tank Optional Tank* *

QUANTITY 3 1 Gallons (1 17.33 L) 55 Gallons (208.18 L)

*All quantities are approximate. ** 159’’ , 177” Wheelbase Vehicles Only.

Crankcase Capacity ENGINE “VORTEC”4300 “VORTEC”5000 “VORTEC”5700 “VORTEC”7400

VIN Quantity With Filter

4.5 Quarts (4.3 L) 5 Quarts (4.8 L) 5 Quarts (4.8 L) 7 Quarts (6.5 L)

All quantities are approximate. After refill, the level MUST be checked as outlined under “Engine Oil And Filter Recommendations’’ in Section 5. **Add one additional quart for RPO 5Z1 and W O KL5 Models.

6-66

“VORTEC”5000

“VORTEC”4300

Normal Replacement Parts

“VORTEC”5700 “VORTEC”7400 Engine VIN PF52 Oil Filter A917C Air Cleaner Filter* A917C CV789C PCV

41-932 Spark Plugs GF48 1 Fuel Filter RC36 Radiator Cap

c v 7 7 4 c

c v 7 7 4 c

A917C

A917C

RC36

Valve

PF1218

c v 7 7 4 c 4 1-932 GF48 1 RC36

PF1218

41-932 GF48 1

PF1218

4 1-932 GF48 1 RC36

*Replace with AC Air Filter, Part No. A917C and for severe dusty conditions, use, AC Air Filter, Part No. 1236C.

Air Conditioning Refrigerant Capacity

I NOTICE:

R-134A refrigerant is not compatible with R-12 refrigerant in an air conditioning system. R-12 in an R-134A system will cause compressor failure, refrigerant oil sludge, or poor air conditioning system performance.

~~

QTY Front Only QTY Front and Rear

TYPE Refrigerant 3.00 lbs. (1.36 kg) 4.875 lbs. (2.21 kg) R- 134A Air Conditioning Refrigerants Not all air conditioning refrigerants are the same. If the air conditioning system in your vehicle needs refrigerant, be sure the proper refrigerant is used. If you’re not sure, ask your GM dealer.

6-67

Lamp and Bulb Data

LAMP OR BULB HEADLAMPS 2 Headlamp System (Sealed Beam System) Low/High Beam 4 Headlamp System (Composite Headlamp System) Low/High Beam High Beam LAMP OR BULB EXTERIOR Front Sidemarker Lamp Front Park and Turn Lamp Rear Parking Lamp Rear Stop and Turn Lamp Back-up Lamp Back-up Lamp Rear Park, Stop, and Turn Lamp CHMSL License Plate Lamp Underhood Lamp Reel Lamp

6-68

TRADE NO.

POWER RATING AT 12.8V, WATTS

H6054

6052 9005

TRADE NO.

194

2357NA

35/65

51 60 QTY.

3057 3057 3156 1156 1157 921 194 232 232

LAMP OR BULB INTERIOR Dome Lamps Reading Lamps IP Courtesy Lamp Stepwell Lamp Instrument Panel Compartment Lamp Ashtray Lamp Sunshade Vanity Mirror LAMP OR BULB INSTRUMENT PANEL Daytime Running Lamps Indicator Charging System Indicator Lamp Instrument Cluster Illumination Headlamp Beam Indicator Turn Signal Indicator Brake Warning Indicator SIR (Air Bag) Safety Belt Warning Check Gages Indicator Malfunction Indicator (“Service Engine Soon”) Lamp

TRADE NO.

QTY.

211-2 211-2 194 194 194 194 74

214

TRADE NO.

QTY.

74 74 194 74 74 74 74 74 74 74

6-69

b NOTES

6-70

Section 7 Maintenance Schedule

This section covers the maintenance required for your vehicle. Your vehicle needs these services to retain its safety, dependability and emission control performance.

7-2 7-4 7-5 7-5 7-6

Introduction Part A: Scheduled Maintenance Services Short TripKity Definition Short TripKity Intervals Long Tripmighway Definition

7-7 7-45 7-49 7-5 1 7-53

Long Trip/Highway Intervals Part B: Owner Checks and Services Part C: Periodic Maintenance Inspections Part D: Recommended Fluids and Lubricants Part E: Maintenance Record

7-1

IMPORTANT: KEEP ENGINE OIL AT THE PROPER RECOMMENDED

LEVEL AND CHANGE AS

Introduction 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 procedures are 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, please maintain your vehicle properly.

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

7-2

How This Section is Organized The remainder of this section is divided into five parts: “Part A: Scheduled Maintenance Services” shows what to have done and how often. Some of these services can be complex, so unless you are technically qualified and have the necessary equipment, you should let your dealer’s service department or another qualified service center do these jobs.

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, have a qualified technician do the work.

If you are skilled enough to do some work on your vehicle, you will probably want to get the service information GM publishes. See “Service and Owner Publications” in the Index.

“Part B: Owner Checks and Services” tells you what should be checked and when. It also explains what you can easily do to help keep your vehicle in good condition. “Part C: Periodic Maintenance Inspections” explains important inspections that your GM dealer’s service department or another qualified service center should perform. “Part D: Recommended Fluids and Lubricants’’ lists some products GM recommends to help keep your vehicle properly maintained. These products, or their equivalents, should be used whether you do the work yourself or have it done. “Part E: Maintenance Record” provides a place for you to record the maintenance performed on your vehicle. Whenever any maintenance is performed, be sure to write it down in this part. This will help you determine when your next maintenance should be done. In addition, it is a good idea to keep your maintenance receipts. They may be needed to qualify your vehicle for warranty repairs.

Part A: Scheduled Maintenance Services Using Your Maintenance Schedule We at General Motors want to help you keep your vehicle in good working condition. But we don’t know exactly how you’ll 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 ---‘ands or in many other ways. Because of all the different ways people use their GM vehicles, maintenance needs vary. You may even need more frequent checks and replacements than you’ll find in the schedules in this section. So please read this section and note how you drive. If you have any questions on how to keep your vehicle in good condition, see your GM dealer. This part tells you the maintenance services you should have done and when you should schedule them. If you go to your dealer for your service needs, you’ll know that GM-trained and supported service people will perform the work using genuine GM parts.

The proper fluids and lubricants to use are listed in Part D. Make sure whoever services y o u vehicle uses these. All parts should be replaced and all necessary repairs done before you or anyone else drives the vehicle. These schedules are for vehicles that: 0 carry passengers and cargo within recommended

limits. You will find these limits on your vehicle’s CertificationEire label. See “Loading Your Vehicle’’ in the Index. are driven on reasonable road surfaces within legal driving limits. use the recommended fuel. See “Fuel” in the Index.

Selecting the Right Schedule First you’ll need to decide which of the two schedules is right for your vehicle. Here’s how to decide which schedule to follow: Gasoline engine vehicles and diesel engine vehicles have different maintenance requirements. If you have a diesel engine, follow a schedule designated for diesel engine vehicles only. See the Diesel Engine Supplement for diesel engine maintenance schedules.

7-4

Maintenance Schedule I Short Trip/City Definition -- Gasoline Engines

Follow the Short Trip/City Maintenance Schedule if any one of these conditions is true for your vehicle:

Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly important when outside temperatures are below freezing. Most trips include extensive idling (such as frequent driving in stop-and-go traffic).

0 Most trips are through dusty areas. 0 You frequently tow a trailer or use a carrier on top of

your vehicle.

0 If the vehicle is used for delivery service, police, taxi

or other commercial application.

One of the reasons you should follow this schedule if you operate your vehicle under any of these conditions is that these conditions cause engine oil to break down soonex

Short Trip/City Intervals -- Gasoline Engines Every 3,000 Miles (5 000 km): Engine Oil and Filter Change (or 3 months, whichever occurs first). Chassis Lubrication (or 3 months, whichever occurs first). Drive Axle Service (or 3 months, whichever occurs first).

Every 6,000 Miles (10 000 km): Tire Rotation. Every 15,000 Miles (25 000 km): Air Cleaner Filter

Inspection, if driving in dusty conditions. Shields and Underhood Insulation Inspection (GVWR above 8,500 lbs. only). Front Wheel Bearing Repack (or at each brake relining, whichever occurs first).

Every 30,000 Miles (50 000 km): Air Cleaner Filter

Replacement. Fuel Filter Replacement.

Every 50,000 Miles (83 000 km): Automatic

Transmission Service (vehicles over 8600 GVWR or driven under severe conditions only).

Every 60,000 Miles (100 000 km): Engine Accessory

Drive Belt Inspection. Fuel Tank, Cap and Lines Inspection. Exhaust Gas Recirculation System Inspection. Evaporative Control System Inspection.

7-5

I '1

Maintenance Schedule Short TripKity Intervals -- Gasoline Engines Every 100,000 Miles (166 000 km): Spark Plug Wire

Inspection. Spark Plug Replacement. Positive Crankcase Ventilation (PCV) Valve Inspection.

Every 150,000 Miles (240 000 km): Cooling System

Service (or every 60 months, whichever occurs first). These intervals only summarize maintenance services. Be sure to follow the complete maintenance schedule on the following pages.

Follow this maintenance schedule onZy if none of the conditions from the Short TripKity Maintenance Schedule is true. Do not use this schedule if the vehicle is used for trailer towing, driven in a dusty area or used off paved roads. Use the Short Trip/City schedule for these conditions. Driving ci vehicle with n fL1lly warmed engine under highway conditions causes engine oil to break down slower.

Maintenance Schedule Long Tripmighway Intervals -- Gasoline Engines rn &very 7,500 Miles (12 500 km): Engine Oil and Filter Change (or every 12 months, whichever occurs first). Chassis Lubrication (or every 12 months, whichever occurs first). Drive Axle Service. Tire Rotation.

Every 15,000 Miles (25 000 km): Shields and

Underhood Insulation Inspection (GVWR above 8,500 lbs. only).

Every 30,000 Miles (50 000 km): Fuel Filter

Replacement. Air Cleaner Filter Replacement. Front Wheel Bearing Repack (or at each brake relining, whichever occurs first).

Every 50,000 Miles (83 000 km): Automatic

Transmission Service (vehicles over 8600 GVWR or driven under severe conditions only).

Every 60,000 Miles (100 000 km): Engine Accessory

Drive Belt Inspection. Fuel Tank, Cap and Lines Inspection. Exhaust Gas Recirculation System Inspection. Evaporative Control System Inspection.

Long Tripmighway Intervals -- Gasoline Engines Every 100,000 Miles (166 000 km): Spark Plug Wire

Inspection. Spark Plug Replacement. Positive Crankcase Ventilation (PCV) Valve Inspection.

Every 150,000 Miles (240 000 km): Cooling System

Service (or every 60 months, whichever occurs first).

These intervals only summarize maintenance services. Be sure to follow the complete maintenance schedule on the following pages.

7-7

Short TripKity Maintenance Schedule -- Gasoline Engines

The services shown in this schedule up to 100,000 miles (166 000 km) should be performed after 100,000 miles (166 000 km) at the same intervals. The services shown at 150,000 miles (240 000 km) should be performed at the same interval after 150,000 miles (240 000 km). See “Owner Checks and Services” and “Periodic Maintenance Inspections” following. 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, kingpin bushings, steering linkage and rear driveline center splines.

7-8

+ A good time to check your brakes is during tire rotation. See “Brake System Inspection” under “Periodic Maintenance Inspection” in Part C of this schedule. ** Drive axle service (see “Recommended Fluids and Lubricants” in the Index for proper lubricant to use):

Locking Differential -- Drain fluid and refill at first engine oil change. At subsequent oil changes, check fluid level and add fluid as needed. If driving in dusty areas or towing a trailer, drain fluid and refill every 15,000 miles (25 000 km). Standard Differential -- Check fluid level and add fluid as needed at every oil change. If driving in dusty areas or towing a trailer, drain fluid and refill every 15,000 miles (25 000 km). More frequent lubrication may be required for heavy-duty use.

I Short TripKity Maintenance Schedule =- Gasoline Engines I 3,000 Miles (5 000 km) 17 Change engine oil and filter (or every

6,000 Miles (10 000 km) 0 Change engine oil and filter (or every

3 months, whichever occurs first). An Emission Control Service.

17 Lubricate chassis components (or every

3 months, whichever occurs first). (See footnote #.) needed. (See footnote * *.)

0 Check axle fluid level and add fluid as

3 months, whichever occurs first). An Emission Control Service.

0 Lubricate chassis components (or every

3 months, whichever occurs first). (See footnote #.) needed. (See footnote **.)

0 Check axle fluid level and add fluid as 0 Rotate tires. See “Tire Inspection and

Rotation” in the Index for proper rotation pattern and additional information. (See footnote +.)

DATE

ACTUAL MILEAGE

SERVICED BY:

DATE

ACTUAL MILEAGE

SERVICED BY:

7-9

Short TripKity Maintenance Schedule -- Gasoline Engines 9,000 Miles (15 000 km) 0 Change engine oil and filter (or every

12,000 Miles (20 000 km) 0 Change engine oil and filter (or every

3 months, whichever occurs first). An Emission Control Service.

0 Lubricate chassis components (or every

3 months, whichever occurs first). (See footnote #.)

0 Check axle fluid level and add fluid as

needed. (See footnote **.)

3 months, whichever occurs first). An Emission Control Service.

0 Lubricate chassis components (or every

3 months, whichever occurs first). (See footnote #.) needed. (See footnote ** .)

0 Check axle fluid level and add fluid as 0 Rotate tires. See “Tire Inspection and

Rotation” in the Index for proper rotation pattern and additional information. (See footnote +.)

DATE ACTUAL

MILEAGE

DATE ACTUAL MILEAGE SERVICED

B Y

7-10

I Short TripKity Maintenance Schedule -- Gasoline Engines I 15,000 Miles (25 000 km) 0 Change engine oil and filter (or every

3 months, whichever occurs first). An Emission Control Service.

0 Lubricate chassis components (or every

3 months, whichever occurs first). (See footnote #.)

0 Inspect air cleaner filter if you are driving

in dusty conditions. Replace filter if necessary. An Emission Control Service. (See footnote? .)

0 Check axle fluid level and add fluid as

needed. (See footnote **.)

0 Clean and repack the front wheel bearings

(or at each brake relining, whichever occurs first).

0 Vehicles With GVWR Above 8,500 lbs.

Only: Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required. This is a Noise Emission Control Service. Applicable only to vehicles sold in th.e United States.