1998 Chevrolet Astro Owners Manual

covered by your warranty.

GM Goodwrench' oil meets all the requirements for your vehicle. If you are in an area where the temperature falls below -20°F (-29"C), consider using either an SAE 5W-30 synthetic oil or an SAE OW-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures.

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Engine Oil Additives Don't add anything to your oil, Your dealer is ready to advise if you think something should be added. When to Change Engine Oil If any one of these is true for you, use the short trip/city maintenance schedule:

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). Most trips are through dusty areas. You frequently tow a trailer or use a carrier on top of your vehicle. The vehicle is used for delivery service, police, taxi or other commercial apl :ation.

Driving under these conc'"ions c Ses engine oil to break down sooner. If any one oi rnese is true for your vehicle, then you need to change your oil and filter every 3,000 miles (5 000 km) or 3 months -- whichever occurs first.

If none of them is true, use the long trip/highway maintenance schedule. Change the oil and filter every 7,500 miles (12 500 km) or 12 months -- whichever occurs first. Driving a vehicle with a fully warmed engine under highway conditions causes engine oil to break down slower. What to Do with Used Oil Did you know that used engine oil contains certain elements that may be unhealthy for your skin and could even cause cancer? Don't let used oil stay on your skin for very long. Clean your skin and nails with soap and water, or a good hand cleaner. Wash or properly throw away clothing or rags containing used engine oil. (See the manufacturer's warnings about the use and disposal of oil products.) Used oil can be a real threat to the environment. If you change your own oil, be sure to drain all free-flowing oil from the filter before disposal. Don't ever dispose of oil by putting it in the trash, pouring it on the ground, into sewers, or into streams or bodies of water. Instead, recycle it by taking it to a place that collects used oil. If you have a problem properly disposing of your used oil, ask your dealer, a service station or a local recycling center for help.

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Engine Cover Removing the Engine Cover 1. Move both front seats as far back as they will go.

3. The nuts are located at the bottom of the extension

on the driver’s and passenger’s side corners.

2. Remove the instrument panel extension by removing

the two nuts that secure it in place.

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4. Remove the screws located near the top on each side of the extension. Grasp the extension from both sides and gently remove it.

5. Disconnect the electrical connectors and set the

extension aside.

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6. Grasp the top of the heater duct and pull down gently

to remove it.

7. Remove the two bolts at the engine cover. The bolts are not supposed to come out of the cover, only from the front of the dash. When removing the cover, be careful not to damage the instrument panel or the trim.

8. Disconnect the AM radio ground strap.

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Installing the Engine Cover 1.

Lift the engine cover into the vehicle and slide it all the way forward. Make sure the rubber seal is over the latches. Install the two bolts at the engine cover. Put the heater duct over the engine cover studs. Push up on the duct gently until it snaps into place. Reconnect the electrical connectors. Install the engine cover extension by gently squeezing the sides and sliding it into place. Make sure all of the fastener clips engage and the extension fits properly in place. Replace and tighten the two screws. Install the two nuts to secure the extension in place.

2. 3.

4. 5 .

6.

9. Grasp the bottom of the cover and slide it rearward.

Then, lift it up and out of the vehicle. If the seal does not release, use the pull strap on the driver’s side above the rear mount.

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Air Cleaner

To remove the air filter, lift the hood, unsnap both clips and remove the top. After changing the filter, snap both clips to secure the air cleaner. Be sure the air cleaner lid is correctly positioned to seal out dust and contaminants that are harmful to your engine. Make sure the fresh air hose is still attached after the filter change. Refer to the Maintenance Schedule to determine when to replace the air filter and the crankcase ventilation filter.

See “Scheduled Maintenance” in the Index.

&A CAUTION:

Operating the engine with the air cleaner off can cause you or others to be burned. The air cleaner not only cleans the air, it stops flame if the engine backfires. If it isn’t there, and the engine backfires, you could be burned. Don’t drive with it off, and be careful working on the engine with the air cleaner off.

I NOTICE:

If the air cleaner is off, a backfire can cause a damaging engine fire. And, dirt can easily get into your engine, which will damage it. Always have the air cleaner in place when

you’re driving.

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filter every 15,000 miles here, or you could get a false reading on the dipstick.

How to Check Because this operation can be a little difficult, you may choose to have this done at your GM dealership Service Department. If you do it yourself, be sure to follow all the instructions

NOTICE:

Too much or too little fluid can damage your transmission. Too much can mean that some of the fluid could come out and fall on hot engine parts or exhaust system parts, starting a fire. Be sure to get an accurate reading if you check your transmission fluid.

Automatic Transmission Fluid When to Check and Change A good time to check your automatic transmission fluid level is when the engine oil is changed. Change both the fluid and (25 000 km) if the vehicle is mainly driven under one or more of these conditions: 0 In heavy city traffic where the outside temperature

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

0 In hilly or mountainous terrain. 0 When doing frequent trailer towing.

Uses such as found in taxi, police or delivery service.

If you do not use your vehicle under any of these conditions, change the fluid and filter every 50,000 miles (83 000 km). See “Scheduled Maintenance Services’’ in the Index.

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’Wait at least 30 minutes before checking the transmission fluid level if you have been driving:

When outside temperatures are above 90°F (32°C). At high speed for quite a while.

0 In heavy traffic -- especially in hot weather. 0 While pulling a trailer. To get the right reading, the fluid should be at normal operating temperature, which is 180°F to 200°F 182°C to 93 ” C). See “Checking Transmission Fluid ’Hot” in the Index.

Checking Transmission Fluid Hot Get the vehicle warmed up by driving about 15 miles (24 km) when outside temperatures are above 50°F (10°C). If it’s colder than 50°F (lO”C), drive the vehicle in DRIVE (D) until the engine temperature gage moves and then remains steady for 10 minutes. Then follow the hot check procedures.

Checking Transmission Fluid Cold A cold check is made after the vehicle has been sitting for eight hours or more with the engine off and is used only as a reference. Let the engine run at idle for five minutes if outside temperatures are 50°F (10°C) or more. If it’s colder than 50°F ( 10°C), you may have to idle the engine longer. Should the fluid level be low during a cold check, you must perform a hot check before adding fluid. This will give you a more accurate reading of the fluid level.

Checking the Fluid Hot or Cold

Park your vehicle on a level place. Keep the engine running. With the parking brake applied, place the shift lever in PARK (P) . With your foot on the brake pedal, move the shift lever through each gear range, pausing for about three seconds in each range. Then, position the shift lever in PARK (P).

0 Let the engine run at idle for three minutes or more.

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Then, without shutting off the engine, follow these steps:

3. Check both sides of the dipstick, and read the lower level. The fluid level must be in the COLD area for a cold check or in the HOT area or cross-hatched area for a hot check.

The transmission dipstick has a red handle and the center of the engine compartment behind the air cleaner. 1. Flip the handle up and then pull out the dipstick and

is located near

wipe it with a clean rag or paper towel.

4. If the fluid level is in the acceptable range, push the

dipstick back in all the way; then flip the handle down to lock the dipstick in place.

2. Push it back in all the way, wait three seconds and

then pull it back out again.

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How to Add Fluid Refer to the Maintenance Schedule to determine what kind of transmission fluid to use. See “Recommended Fluids and Lubricants” in the Index. Add fluid only after checking the transmission fluid while it is hot. (A cold check is used only as a reference.) If the fluid level is low, add only enough of the proper fluid to bring the level up to the HOT area for a hot check. It doesn’t take much fluid, generally less than one pint (0.5 L). Don’t overji11.

NOTICE:

We recommend you use only fluid labeled DEXRON@-111, because fluid with that label is made especially for your automatic transmission. Damage caused by fluid other than DEXRON-I11 is not covered by your new vehicle warranty.

After adding fluid, recheck the fluid level as described under “How to Check.” 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.

All-Wheel Drive If you have an all-wheel-drive vehicle, be sure to perform the lubricant checks described in this section. However, they have two additional systems that need lubrication. Transfer Case When to Check Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant. See “Periodic Maintenance Inspections” in the Index.

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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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Front 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.

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

What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See “Recommended Fluids and Lubricants” in the Index. Engine Coolant The cooling s stem in your vehicle is filled with DEX-COOL engine coolant. This coolant is designed 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 system 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:

Give freezing protection down to -34°F (-37°C).

0 Give boiling protection up to 265 “F ( 129°C). 0 Protect against rust and corrosion.

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.

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

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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@ covered by your new vehicle warranty.

is not

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 anyth‘ ; 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 mixture will. Your vehicle’s coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, 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 mixture of clean water and DEX-COOL@ coolant.

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NOTICE:

If you use an improper coolant mixture, your engine could overheat and be badly damaged. The repair cost wouldn’t be covered by your warranty. Too much water in the mixture 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.

Checking Coolant

. .

When your engine is cold, the coolant level should be at ADD, or a little higher. When your engine is warm, the level should be up to FULL HOT, or a little higher.

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

A CAUTION:

lhrning 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 turn the radiator pressure cap -- even a never have to add coolant at the radiator. little -- when the engine and radiator are hot.

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

A CAUTION:

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

NOTICE:

Your radiator cap is a 15 psi (105 kPa) 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.

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Power Steering Fluid

When you replace your radiator pressure cap, a GM cap is recommended. Thermostat Engine coolant temperature is controlled by a thermostat in the engine coolant system. The thermostat stops the flow of coolant through the radiator until the coolant reaches a preset temperature.

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.

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How To Check Power Steering Fluid When the engine compartment is cool, wipe the cap and the 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. 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.

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

I Open the cap labeled

WASHER FLUID ONLY. Add washer fluid until the tank is full,

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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 engine coolant (antifreeze) in your windshield washer. It can damage your washer system and paint.

Brakes Brake Fluid

Your brake master cylinder reservoir is here. It is filled with DOT-3 brake fluid.

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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 leaking 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 done on the brake hydraulic system.

too much brake fluid, it can spill on

If you we 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.

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Checking Brake Fluid

What to Add When you do need brake fluid, use only DOT-3 brake fluid -- such as Delco Supreme ll@ (GM Part 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 A CAUTION:

You can check the brake fluid without taking off the cap. Just look at the brake fluid reservoir. The fluid level should be above MIN. If it isn’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 level is above the MIN but not over the MAX mark or the top of the window on the side of the reservoir.

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.

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A CAUTION:

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 NOTICE:

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

Some driving conditions or climates may ca---e a brake squeal when the brakes are first applied or llgntly 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.

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.

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).

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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 immediately. 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. Battery Every new vehicle has an ACDelco Freedom@ battery. You never have to add water to one of these. When it’s time for a new battery, we recommend an ACDelco Freedom battery. Get one that has the replacement number shown on the original battery’s label.

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Vehicle Storage If you’re not going to drive your vehicle for 25 days or more, remove the black, negative (-) cable from the battery. This will help keep your battery from

r nin Sown. A CAUTION:

Batteries have acid that can burn 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 For any bulb changing procedure not listed in this section, contact your GM dealer service department. Before replacing any bulbs, make sure all lamps are off and the vehicle is not running. See “Replacement Bulbs” in the Index.

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 Sealed Beam Lamps

1. Remove the four retainer

screws and the retainer.

2. Pull the connector out and unplug the lamp.

3. Install the new bulb into the connector. 4. Reverse Steps 1 and 2 to reinstall the headlamp.

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Composite Headlamps 1. Open the hood.

2. Remove the two screws from the sidemarkedturn signal lamp.

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3. Completely remove the sidemarkedturn signal lamp by pulling out the assembly and disconnecting the sidemarkedturn signal lamp sockets from the lamp.

4. Remove the screw located behind the corner reflector in order to remove the entire corner reflector.

5. Remove the remaining three screws; the first one

from the corner reflector pocket and the two remaining from the composite assembly.

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6. Remove the composite

assembly.

7. Turn the halogen bulb

toward the left to remove from the assembly.

Front Turn Signal Lamps 1. Remove the two screws at the inside edge of the

parkingkurn signal lamp assembly.

2.

3.

Remove the lamp assembly. Squeeze the tab on the side of the lamp socket while turning the socket toward the left.

.. .

8. Install the new bulb into the composite assembly

by turning it toward the right until it is completely tightened.

9. Replace the composite assembly by installing and tightening all of the screws previously removed.

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4. 5. 6. 7.

8.

Pull the socket out of the lamp assembly. Pull the bulb from the socket. Gently push the new bulb into the socket. Put the socket back into the lamp assembly and turn it toward the right until it locks. Put the parkinghrn signal lamp assembly back into the vehicle and tighten the screws.

Taillamps 1. Open the rear door.

2. Remove the two screws

from behind the door.

3. Pull out the taillamp assembly so you can see

the socket.

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5. Reverse Steps 1 through 4 to reinstall the taillamp.

Pinch the two tabs on the wiper arm and slide the insert out of the blade, Slide the new one in place. Make sure the tabs are locked into position. See “Normal Maintenance Replacement Parts” in the Index for the proper type of replacement blade. 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.

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A CAUTION:

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.

0 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. Overinflated tires are more likely to be cut, impact -- such as when you hit a pothole. punctured or broken by a sudden Keep tires at the recommended pressure. Worn, old tires can cause accidents. If your tread is badly worn, or if your tires have been damaged, replace them.

Inflation -- Tire Pressure

The CertificatiodTire 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: 0 Too much flexing 0 Too much heat 0 Tire overloading 0 Bad wear

Bad handling Bad fuel economy.

NOTICE: (Continued)

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NOTICE: (Continued)

If your tires have too much air (overinflation), you can get the following: 0 Unusual wear Bad handling Rough ride Needless damage from road hazards.

When to Check Check your tires once a month or more. Don’t forget your compact spare tire. It should be at 60 psi (420 kPa).

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. 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.

When rotating your tires, always use the correct rotation pattern shown here.

Don’t include the compact spare tire in your tire rotation. After the tires have been rotated, adjust the front and rear inflation pressures as shown on the Certificationire label. Make certain that all wheel nuts are properly tightened. See “Wheel Nut Torque” 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.

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.)

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. The tread or sidewall is cracked, cut or snagged deep enough to show cord or fabric.

0 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.

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I A CAUTION: ---

Mixing tires could cause you to lose contrc 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. It’s all right to drive with your compact spare, though. It was developed for use on your vehicle.

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

Buying New Tires To find out what kind and size of tires you need, look at the CertificationRire 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.

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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 grades, they must also conform to Federal safety requirements and additional General Motors Tire Performance Criteria (TPC) standards.

Treadwe: 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 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 -- 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 (straight ahead) traction tests and does not include cornering (turning) traction.

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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 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 dealer if any of these conditions exist.

6-48

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 le. right wheel, wheel bolts and wheel nuts for your vel

A 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” in the Index for more information.

Used R - l - m e n t W h 4 s

rutting 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 equiI~ ent wheel.

6-49

Tire Chains

NOTICE:

If your vehicle has P235/65R15 size tires, don’t use tire chains. They can damage your vehicle because there’s not enough clearance. Use another type of traction device only if its manufacturer recommends it for use on your vehicle and tire size combination and road conditions. Follow that manufacturer’s instructions. To help avoid damage to your vehicle, drive slowly, readjust or remove the device if it’s contacting your vehicle, and don’t spin your wheels.

NOTICE: (Continued)

NOTICE: (Continued)

If you do find traction devices that will fit, install them on the rear tires. If you have other size tires, use tire chains only where legal and only when you must. Use only SAE Class “S” type chains that are the proper size for your tires. Install them on the rear axle tires and 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.

6-50

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: 0 Gasoline Benzene Naphtha

0 Carbon Tetrachloride

Acetone

0 Paint Thinner

Turpentine

0 Lacquer Thinner 0 Nail Polish Remover They can all be hazardous -- some more than others -- and they can all damage your vehicle, too.

Don’t use any of these unless this manual says you can. In many uses, these will damage your vehicle: 0 Alcohol 0 Laundry Soap 0 Bleach 0 Reducing Agents Cleaning the Inside of Your Vehicle Use a vacuum cleaner often to get rid of dust and loose dirt. Wipe vinyl, leather, plastic and painted surfaces with a clean, damp cloth. Your dealer has two cleaners, Multi-Purpose Interior Cleaner and Capture Non-Solvent Dry Spot and Soil Remover for cleaning fabric and carpet. They will clean normal spots and stains very well. You can get GM-approved cleaning products from your dealer. (See “Appearance Care and Materials” in the Index.) Here are some cleaning tips: 0 Always read the instructions on the cleaner label.

Clean up stains as soon as you can -- before they set. Carefully scrape off any excess stain. Use a clean cloth or sponge, and change to a clean area often. A soft brush may be used if stains are stubborn. If a ring forms after spot cleaning, clean the entire area immediately or it will set.

Using Multi-Purpose Interior C1f on Fabric I Vacuum and brush the area to remove any loose dirt. 2. Always clean a whole trim panel or section. Mask

surrounding trim along stitch or welt lines.

3. Mix powdered cleaner following the directions on

the container label to form thick suds.

4. Use suds only and apply with a clean sponge. Don't

saturate the material and don't rub it roughly.

5. As soon as you've cleaned the section, use a sponge

to remove the suds.

6. Wipe cleaned area with a clean, damp towel or cloth. 7. Wipe with a clean cloth and let dry. Special Fabric Cleaning Problems Stains caused by such things as catsup, coffee (black), egg, fruit, fruit juice, milk, soft drinks, 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 multi-purpose interior

cleaner instructions described earlier.

6-52

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. Let dry. Stains caused by candy, ice cream, mayonnaise, chili sauce and unknown stains can be removed as follows: 1. Carefully scrape off excess stain. 2. First, clean with cool water and allow to

dry completely.

3. If a stain remains, follow instructions for

Multi-Purpose Interior Cleaner.

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).

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.

0 Things like tar, asphalt and shoe polish will stain if

you don’t get them off quickly. Use a clean cloth and a vinyl/leather 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.

0 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. Cleaning Interior Plastic Components Use only a mild soap and water solution on a soft cloth or sponge. Commercial cleaners may affect the surface finish. Cleaning the Built-in Child Restraint Your built-in child restraint may be cleaned with mild soap and lukewarm water. Don’t use household cleaners. They may weaken the harness or damage plastic parts. The built-in child restraint pad is attached to the child restraint cushion and seatback with fastener strips. You can remove the pad, machine wash it in cold water on a gentle cycle and tumble dry it on a low heat setting. Never bleach or iron the pad, and don’t dry clean it.

6-53

Care of Safety Belts and Built-in Child Restraint Harness Keep the safety belts and the built-in child restraint harness clean and dry.

Do not bleach or dye safety belts or the built-in child restraint harness. If you do, they may be severely weakened. In a crash, they might not be able to provide adequate protection. Clean the safety belts and the child restraint harness 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

6-54

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, Backglass 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 Windshield 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 blades that look worn.

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.) 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. You can get GM-approved cleaning products from your dealer. (See “Appearance Care and Materials” in the Index.) 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 car 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 car washing (mild detergent) soap to clean exterior lamps and lenses. Follow instructions under “Washing Your Vehicle.” 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 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 basecoatklearcoat paint finish.

6-55

I NOTICE:

Machine compounding or aggressive polishing on a basecoat/clearcoat 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. Cleaning Aluminum Wheels (If Equipped) Keep your wheels clean using a soft clean cloth with mild soap and water. Rinse with clean water. After

6-56

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. 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. Chemical Paint Spotting Some weather and atmospheric conamons 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.

6-57

Appearance Care Materials Chart

PART NUMBER

SIZE

DESCRIPTION

USAGE Exterior polishing cloth

Polishing Cloth Tar and Road Oil Remover Removes tar, road oil and asphalt

23 in. x 25 in. - Wax Treated 16 oz. (0.473 L) 16 oz. (0.473 L) I Chrome Cleaner and Polish 16 oz. (0.473 L) I White Sidewall Tire Cleaner 32 oz. (0.946 L) 23 oz. (0.680 L) 8 oz. (0.237 L) 16 oz. (0.473 L) Multi-Purpose Interior Clean- Cleans 16 02. (0.473 L) I 8 oz. (0.237 L)

I Armor All Protectant

Vinyl Cleaner Glass Cleaner

Wheel Cleaner

er

2.5 sq. ft.

12 oz. (0.354 L) 16 02, (0.473 L) 16 oz. (0.473 L) 16 oz. (0.473 L)

I Capture Dry Spot Remover Synthetic Chamois Silicone Tire Shine Finish Enhancer

Cleaner Wax Surface Cleaner

I Use on chrome, stainless steel, nickel, copper and brass I Removes soil and black marks from whitewalls Cleans vinyl tops, upholstery and convertible tops

Removes dirt, grime, smoke and fingerprints

Protects leather, wood, acrylics, Plexiglas , plastic,

rubber and vinyl

carpets, seats, interior trim, door panels

and floor mats

Spray on and rinse with water

Attracts, absorbs and removes Shines vehicle without scratching

soils

Spray on tire shine

Removes dust, fingerprints and surface contaminants Removes light scratches and oxidation and protects finish Removes contaminants, blemishes and swirl marks

994954 1050 172 1050 173 1050 174 1050214 1050427

10529 18**

1052925

1052929 1052930 1234572 1 12345725 I2377964 12377966 12377984

6-58

Vehicle Identification Number (VIN)

II

ENGINE/l998 CODE MODEL

your VIN,

7 -\ ASSEMBLY YEAR

PLANT

0 the model designation, 0 paint information and

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

a list of all production options and special equipment.

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

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.

6-59

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 go 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. If the overload is caused by some electrical problem and not snow, etc., be sure to get it fixed. Power Windows and Other Power Options Circuit breakers in the fuse panel 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.

6-60

1 1

Fuses and Circuit Breakers The wiring circuits in your vehicle are protected from short circuits by a combination of fuses, circuit breakers and fusible thermal links. This greatly reduces the chance of fires caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating. Spare fuses and a fuse puller are located in the underhood electrical center. You can remove fuses with the fuse puller. Remember to replace any of the spare fuses you use, so you will have some if you ever need them again. If you ever have a problem on the road and don’t have a spare fuse, you can borrow one that has the same amperage. Just pick some feature of your vehicle that you can get along without -- like the radio or cigarette lighter -- and use its fuse, if it is the correct amperage. Replace it as soon as you can. There are two fuse blocks in your vehicle: one is inside the vehicle and one is in the engine compartment.

Instrument Panel Fuse Block

The fuse block is on the lower portion of the instrument panel on the driver’s side.

6-61

/

18

24

c 7 c 7 c 7 1 7

23

17

11

10

16

21

15

c 7 E 7 c 7 E 7 c 7 c 7 1 1 1 7

20

14

E 7 c 7 c 7 E 3

19

13

FuseKircuit

Breaker Usage

Stop/Turn/Hazard Lamps, CHMSL, Chime Module Not Used Courtesy Lamps, Power Outside Mirrors, Glove Box Lamp, Dome Reading Lamps, Vanity Mirror Lamps

FuseKircuit

Usage Breaker

10 11

DRL Relay, DRL Module, Chime Headlamp Switch, Keyless Entry, Cluster, Overhead Console, Interior Lamps Module Not Used Cruise Module, Cruise Control Switch Power Outlets, DLC, Subwoofer Amplifier Starter Enable Relay License Plate Lamp, Taillamps, Parking Lamps, Ashtray Lamp, Panel Lights, Trailer Taillamps, Front and Rear Sidemarker Lamps, Door Switch Illumination, Headlamp Switch Illumination, Rear Seat Audio Illumination Air Bag System Wiper Motor, Washer Pump, Upfitter Relay Coil

FuseKircuit

Usage Breaker 12

13

14

15 16

17

L, M 1, M2 Blower Motor, Rear A/C Relay Coil, Front Cont. Temp. Door Motor, HI Blower Relay, Defogger Timer Coil Cigar Lighter, Door Lock Switches, Dutch Door Release Module Cluster Illum, HVAC Controls, Chime Module, Radio Illumination, Rear Heat Switch Illumination, Rear Wiper/Washer Switch Illumination, Rear Liftgate Switch Illumination, Remote Cassette Illumination, O/H Console DRL Lamps Front Turn Signals, Rear Turn Signals, Trailer Turn Signals, Back-up Lamps, BTSI Solenoid Radio: ATC (Standby), 2000 Series (Main Feed), Rear Seat Audio Controls

FuseKircuit

Usage Breaker 18

19

20

21 22 23 24

LCWAL,

VCM-Ign 3, VCM-Brake, Cruise Stepper Motor Signal Radio: ATC (Main Feed), 2000 Series (Standby) PRNDL/ Odometer, TCC Enable and PWM Solenoid, Shift A and Shift B Solenoids, 3-2 Downshift Solenoid Not Used Security/Steering Module Rear Wiper, Rear Washer Pump Not Used (Circuit Breaker) Power Door Lock Relay, 6-way Power Seat, Remote Control Door Lock Receiver, Dutch Door Module, Dutch Door Release (Circuit Breaker) Power Windows

6-63

Underhood Electrical Center c

[ LIGHTING

(7) (T)

(COLI-

(,,,)

ENABLE

(-)

SThRTER ENABLE =CLAY

(-) (-)

Usage The underhood electrical center is located toward the rear of the engine compartment on the driver’s side. Lift the hood and open the cover to gain access to this fuse block.

Upfitter Battery Feed Upfitter Accessory Feed

Feed AUX B AUX A Relay A/C Relay (Rear Heat and A/C) Upfitter Accessory Relay Starter Enable Relay A/C Enable Relay Export Only Relay Fuel Pump Relay

6-64

Fuse/Circuit

Breaker Usage

UPFIT-BATT Upfitter Battery Power Stud, Trailer

Wiring Harness

Not used

UPFIT-ACCY Upfitter Accessory Relay Spare Fuse Puller* Spare Spare ECM-B

Not used Not used Fuel Pump Relay and Motor, VCM, Oil Pressure Switch/Sender Horn Relay and Horn A/C Enable Relay and Compressor Heater-A/C Control Selector Switch, Rear Window Defogger Oxygen Sensors, Camshaft Position Sensor, Mass Air Flow Sensor, Evaporative Emission Canister Purge Solenoid, Linear EGR Valve Solenoid, VCM EGR HI

HORN A/C COMP RR DEFOG

ENG-I

Fuse/Circuit

Breaker Usage

IGN-E ECM-I

LIGHTING

BATT

IGN A IGN B ABS N C

RR HTRIAC Spare

A/C Enable Relay Coil Fuel Injectors 1-6, Crankshaft Position Sensor, VCM, Coil Driver Module (EST) Park Lamps Fuse, DRL Fuse, Headlamp and Panel Dimmer Switch SteeringBecurity Fuse, Courtesy Fuse, ACSY CB, Stop/Hazard Fuse, Auxiliary Power Fuse, Cigar Lighter Fuse, Radio Battery Fuse Starter Relay, Ignition Switch Ignition Switch Electronic Brake Control Module Blower Motor Resistor, Blower Relay Auxiliary Heater N C Relay Not used

*A fuse puller is included in the underhood electrical center. You will also find spare fuses.

6-65

Replacement Bulbs Exterior Lamps Halogen Headlamps - Sealed Beam Halogen Headlamps - Composite Halogen Headlamps - Composite Parking, Turn Signal Lamps Rear, Stoplamps Sidemarker Lamps Back-up Lamps

Quantity

Trade No. H6054 9006 (Low-Beam) 9005 (High-Beam) 3 157NA 2057 194 1156

6-66

Quantity”

Capacities and Specifications All capacities are approximate. English and metric conversions are given. Please refer to “Recommended Fluids and Lubricants” in the Index for more information. Engine Specifications Engine . . . . . . . . . . . . . . “VORTEC” 4300 V6 CSFI* RPO ................................. L35 Firing Order ...................... 1-6-5-4-3-2 Horsepower . . . . . . . . . . . . . . . . . . . 190 at 4,400 rpm Thermostat Specification . . . . . . . . . . . 195 OF (9 1 O C) *Central Sequential Fuel Injection Wheel Nut Torque Base or Optional Wheel . . . . . . . 100 lb-ft (140 N-m) Tire Pressures . . . . . . . . See “Loading Your Vehicle” in the Index.

Cooling System Capacity Quantity” without Rear Heater with Rear Heater 13.5 quarts (12.8 L)

16.5 quarts (15.6 L)

After refill, the level must be checked, * All quantities are approximate. Crankcase Capacity Quantity”

with Filter . . . . .

. . . . . . . . . . . 4.5 quarts (4.3 L) After refill, the level must be checked. Do not overfill. * All quantities are approximate. Fuel Tank Capacity Standard Tank . . . . . . . . . . . . . . . . . 2 5 gallons (90 L)

Transmission Capacity Automatic Transmission (Drain and Refill) . . . . . . . . . . . . 5.0 quarts (4.7 L)

Front Axle Capacity Front Axle . . . . . . . . . .

. . 2.6 pint (1.2 L)

6-67

Rear Axle Capacity Standard Rear Axle . . . . . . . . . . . . . . 3.5 pint (1.7 L) Locking Rear Axle . . . . . . . . . . . 3.5 pint (1.7 L) 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 dealer. Refrigerant should be added only by a qualified N C technician.

Air Conditioning Refrigerant Capacity Quantity* mPe 2 lbs. (0.91 kg) R- 134a 3 lbs, (1.36 kg) R- 134a

System C-60** C-69***

*All quantities are approximate. **Front A/C only. ***Front and Rear A/C.

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.

6-68

Vehicle Dimensions* Length ............. , . 189.8 inches (482 cm) Width . . . . . . . . . . . . . . . . . 77.5 inches (196.8 cm) Height . . . . . . . . . . . . . . . . . . . 76.0 inches (193.0 cm) Wheelbase .............. 1 11 .O inches (28 1.9 cm) Front Tread Width . . . . . . . 65.1 inches ( 165.4 cm) Rear Tread Width . . . . . . . . . . 65.1 inches (165.4 cm) *Figures reflect base equipment only.

Normal Maintenance 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. Engine Oil Filter . . . . . . . . . . . . . . . . AC Type PF52 Air Cleaner . . . . . . . . . . . . . . . . . AC Type A1 163C Positive Crankcase Ventilation (PCV) Valve ....... AC Type CV746C Spark Plugs ................... AC Type 4 1-932 Spark Plug Gap . . . . . . . . . . 0.060 inches ( 1.52 mm) Fuel Filter ..................... AC Type GF481 Thermostat . . . . . . . . . . . . . . . GM Part No. 12551472 Wiper Blades (Front) , , . . , Trico 22110158, Pin Type 18 inches (45.7 cm) Length . Trico 22 154396, Pin Type 14 inches (35.5 cm) Length

Wiper Blade (Rear) , ,

6-69

NOTES

6-70

&I NOTES

6-7 1

b NOTES

6-72

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 7-7

Introduction Part A: Scheduled Maintenance Services Short Trip/City Definition Short Trip/City Intervals Long Trip/Highway Definition Long Trip/Highway Intervals

7-a 7-29 7-4 1 7-45 7-47 7-49

Short TripKity Maintenance Schedule Long Trip/Highway Maintenance Schedule Part B: Owner Checks and Services Part C: Periodic Maintenance Inspections Part D: Recommended Fluids and Lubric Part E: Maintenance Record

Its

7-1

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.

IMPORTANT- KEEP ENGINE OIL AT THE PROPER RECOMMENDED

LEVEL AND CHANGE A$

Plan

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 cpqter do these job.

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. 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 dealer’s service department or another qualified service center should perform. “Part D: Recommended Fluids and Lubricants’’ lists some recommended products 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.

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The proper fluids and lubricants to use are listed in Part D. Make sure whoever services your 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:

carry passengers and cargo within recommended limits. You will find these limits on your vehicle’s Certificationmire label. See “Loading Your Vehicle” in the Index. are driven on reasonable road surfaces within legal driving limits.

0 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:

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 errands or in many other ways. Because of all the different ways people use their 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.

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Maintenance Schedule I Short Trip/City Definition

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