1994 Chevrolet Suburban Owners Manual

Before closing the hood, be sure all filler caps are on properly. Pull down the hood and close it firmly. Cleaning Your Diesel Engine

NOTICE: If you spray or pour water or any other liquid on your engine when it is warm or hot, or when it is running, you could cause serious damage to it. If you ever clean the engine, clean it only when it is cold.

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Engine Oil (Except Diesel) It's a good idea to check your engine oil every time you get fuel. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground.

r"'

' '

Turn off the engine and give the oil a few minutes to drain back into the oil pan. If you don't, the oil dipstick might not show the actual level.

To Check Engine Oil

Pull out the dipstick and clean it with a paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip lower. When to Add Oil If the oil is at or below the ADD mark, then you'll need to add some oil. But you must use the right kind. This section explains what kind of oil to use. For crankcase capacity, see "Capacities and Specifications" in the Index.

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NOTICE: Don’t add too much oil. If your engine has so much oil that the oil level gets above the upper mark that shows the proper operating range, your engine could be damaged.

The engine oil filler cap is located on the driver’s side engine valve cover.

Just fill it enough to put the level somewhere in the proper operating range. Push the dipstick all the way back in when you’re through. What Kind of Oil to Use Beginning midyear 1993, oils of the proper quality for your vehicle will be identified with this new “starburst” symbol. The “starburst” symbol indicates that the oil has been certified by the American Petroleum Institute (API), and is preferred for use in your gasoline engine.

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You should look for this on the front of the oil container, and use only oils that display this new symbol. You should also use the proper viscosity oil for your vehicle, as shown in the following chart: LIGHT DUTY EMISSIONS -GAS ENGINES

RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS

FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST SAL VISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE.

LOOK FOR ONE OF THESE LABELS

HOT

WEATHER C \ - +38

+ 100 '

+ 8 0 .

. +27

+60

- + 1 6

+ 4 a . + 2 0 -

. + 4

' - 7

0 -

- 18

SAE 1OW-30

SAE SW-30 PREFERRED

IF NEITHER SAE 5W-30 NOR SAE 1OW-30 GRADE OILS ARE AVAILABLE, SAE 30 GRADE MAY BE USED AT TEMPERATURES ABOVE 40 DEGREES F (4 DEGREES C). DO NOT USE SAE 1OW-40, SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED

As shown in the chart, SAE 5W-30 is best for your vehicle. However, you can use SAE 1OW-30 if it's going to be 0°F (- 1 8 O C) or above. These numbers on an oil container show its viscosity, or thickness. Do not use other viscosity oils, such as SAE 1OW-40 or SAE 20W-50.

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HEAVY DUTY EMISSIONS -GAS ENGINES

RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS

FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST SAE VISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE.

HOT

WEATHER "F "C

+loo - - +38

+80 - - + 2 7

+60 - - +16

t 4 0 - - + 4

+20 - - - I 0 - --18

COLD

WEATHER

ONE OF THESE

LOOK FOR LABELS

I SAE 1OW-30 PREFERRED

SAE 5W-30

IF NEITHER SAE 5W-30 NOR SAE 1OW-30 GRADE OILS ARE AVAILABLE, SAE 30 GRADE MAY BE USED AT TEMPERATURES ABOVE 40 DEGREES F (4 DEGREES C). DO NOT USE SA€ 1OW-40, SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED

As shown in the chart, SAE IOW-30 is best for your vehicle. However, you can use SAE 5W-30 if it's going to be colder than 60°F ( 16°C) before your next oil change. When it's very cold, you should use SAE 5W-30. These numbers on an oil container show its viscosity, or thickness. Do not use other viscosity oils, such as SAE lOW-40 or SAE 20W-50,

6-19

If you cannot find oils with the new “starburst” symbol on the front of the container, you should look for and use oils containing the following three things:

SHorSG “SH’ or “SG’ must be on the oil container, either by itself or combined with other quality designations, such as “SWCD,” “SH,SG, CD,” “SGKD,” etc. These letters show American Petroleum Institute (API) levels of quality.

e SAE 5W-30 -Vehicles with Light Duty Emissions (8500 GVWR or

less) OR SAE 1OW-30 -Vehicles with Heavy Duty Emissions (8501 GVWR or more). Energy Conserving I1 Oils with these words on the container will help you save fuel.

These three things are usually included in a doughnut shaped logo (symbol) on most containers. If you cannot find oils with the “starburst” symbol, you should look for oils with the doughnut shaped symbol, containing the three things noted above.

NOTICE: If you use oils that do not have either the “starburst” symbol or an API SH or SG designation, you can cause engine damage not covered by your warranty.

GM Goodwrench@ oil (in Canada, GM Engine Oil) meets all the requirements for your vehicle.

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Engine Oil Additives Don’t add anything to your oil. Your GM dealer is ready to advise if you think something should be added.

When to Change Engine Oil See if any one of these is true for you:

Most trips are less than 4 miles (6 km).

0 It’s below freezing outside and most trips are less than 10 miles (16 km).

The engine is at low speed most of the time (as in door-to-door delivery, or in stop-and-go traffic). You tow a trailer often. Most trips are through dusty places. The vehicle is frequently operated off-road.

If any one of these is true for your vehicle, then you need to change your oil andfifilter every 3,000 miles (5 000 km) or 3 months - whichever comes first . Light Duty Emissions: If none of them is true, change the oil every 7,500 miles (12 500 km) or 12 months - whichever comes first. Change the filter at the first oil change and at every other oil change after that. Heavy Duty Emissions: If none of them is true, change the oil every 6,000 miles ( 10 000 km) or 12 months - whichever comes first. Change the filter at the first oil change and at every other oil change after that if mileage determines when you change your oil. If time determines when you change your oil, change the filter each time you change your oil. Engine Coolant Heater (Engine Block Heater) An engine coolant heater can be a big help if you have to park outside in very cold weather, 0°F (-1 8 “C) or colder. If your vehicle has this option, see “Engine Coolant Heater ” in the Index. 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.)

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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. Engine Oil (Diesel Engines) It's a good idea to check your engine oil level every time you get fuel. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground.

Turn off the engine and give the oil a few minutes to drain back into the oil pan. If you don't, the oil dipstick might not show the actual level.

To Check Engine Oil

Pull out the dipstick and clean it with a paper towel or a cloth, then push it back in all the way. Remove it again, keeping the tip lower.

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When to Add Oil If the oil is at or below the ADD line, then you’ll need to add some oil. But you must use the right kind. This section explains what kind of oil to use. For crankcase capacity, see “Capacities and Specifications” in the Index.

NOTICE: Don’t add too much oil. If your engine has so much oil that the oil level gets above the proper operating range, your engine could be damaged.

The engine oil filler cap is located on a filler tube at the front of the engine.

Just fill it enough to put the level somewhere in the proper operating range. Push the dipstick all the way back in when you’re through.

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What Kind of Oil to Use Look for these two things:

0 C F 4 S H

CF-4/SH is the best oil for your vehicle. However, if you can not find CF-4/SH oil, you may use CF-4/SG or CE/SH or CE/SG oil. These may be listed as shown or in reverse order, for example SWCF-4. Other letters may also be listed, such as SH/CD, CE, CF-4. These letters show American Petroleum Institute (API) levels of quality.

NOTICE: If you use oils that don’t have these designations,

~gine damage which is not covered by your warranty.

you can cause

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DIESEL ENGINES

RECOMMENDED SAE

VISCOSITY GRADE ENGINE OILS

SELECT THE SAE GRADE 011 BASED ON THE EXPECTED TEMPERATURE RANGE

BEFORE NEXT OIL

CHANGE

HOT

WEATHER

+loo - +60 - - +16 +32 -- 0 0 - - -18 -20 - - -29

LABEL

- SAE

30

SAE 15W-40 PREFERRED above 0°F (-18%)

SAE 1OW-30

_ _ _ _ _ _ _ _

COLD

WEATHER

DO NOT USE SAE 1DW-40, SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED

S A E 15W-40 As shown in the viscosity chart, SAE 15 W-40 is best for your vehicle. However, you can use SAE low-30 if it’s going to be colder than 32°F (0°C) before your next oil change. When it’s very cold, below 0°F (-1 8”C), you should use SAE IOW-30 to improve cold starting. Also, SAE 30 may be used at temperatures above freezing, 32°F (0°C). These numbers on the oil container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 10W-40 or SAE 20W-50.

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This doughnut-shaped logo (symbol) is used on most oil containers to help you select the correct oil. You should look for this on the oil container, and use only those oils that display the logo. GM Goodwrench@ oil (in Canada, GM Engine Oil) meets all the requirements for your vehicle. Engine Oil Additives Don’t add anything to your oil. Your GM dealer is ready to advise if you think something should be added. When to Change Engine Oil See if any one of these is true for you:

Most trips are less than 4 miles (6 km).

0 It’s below freezing outside and most trips are less than 10 miles

(16 km).

0 The engine is at low speed most of the time (as in door-to-door

delivery, or in stop-and-go You tow a trailer often.

traffic).

0 Most trips are through dusty places.

The vehicle is frequently operated off-road.

If any of these is true for your vehicle, then you need to change your oil and filter every 2,500 miles (4 000 km) or 3 months - whichever comes first. If none of them is true, change the oil and filter every 5,000 miles (8 000 km) or 12 months - whichever comes first. 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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Air Cleaner

Refer to the Maintenance Schedule to determine when to replace the air filter. See “Scheduled Maintenance Services” in the Index.

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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To remove the air cleaner filter on a gas engine or a 6.5 liter naturally aspirated diesel, turn the wing nuts to the left. Remove the cover and change the filter.

To remove the air cleaner filter on a 6.5 liter turbocharged diesel, first remove the rubber elbow. Remember to observe the caution about turbocharger blades on the rubber elbow,

Then, unhook the cover retaining clips and push the rear of the cover toward the engine.

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. Refer to the Maintenance Schedule to determine when to change your fluid. See “Scheduled Maintenance Services” in the Index. How to Check Because this operation can be a little difficult, you may choose to have this done at a GM dealership Service Department. If you do it yourself, be sure to follow all the instructions here, or you could get a false reading on the dipstick.

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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, starting a fire. Be sure to get an accurate reading if you check your transmission fluid.

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

0 When outside temperatures are above 90°F (32°C). 0 At high speed for quite a while.

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 (82°C to 93°C). To check transmissionfluid hot: Get the vehicle warmed up by driving about 15 miles (24 km) when outside temperatures are above 50°F (IOOC). If it’s colder than 50°F (IOOC), drive the vehicle in “D” (3rd Gear) until the engine temperature gage moves and then remains steady for ten minutes. Then follow the hot check procedures. To check transmissionfluid 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 (IOOC), 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. To check the fluid hot or cold

Park your vehicle on a level place.

e With the parking brake applied, place the shift lever in “P’ (Park).

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 “P” (Park). Let the engine run at idle for three minutes or more. Then, without shutting off the engine, follow these steps:

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1. Flip the handle

up and then pull out the dipstick and wipe it with a clean rag or paper towel.

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

it back out

again.

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.

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.

WOW 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. If the fluid level is low, add only enough of the proper fluid to bring the level up to the COLD area for a cold check or the HOT area for a hot check. It doesn’t take much fluid, generally less than a pint. Don’t overfill. We recommend you use only fluid labeled DEXRON@-I11 or DEXRON@-IIE, because fluids with that label are made especially for your automatic transmission. Damage caused by fluid other than DEXRON@-I11 or DEXRON@-IIE 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.

Manual Transmission Fluid When to Check A good time to have it checked is when the engine oil is changed. However, the fluid in your manual transmission doesn’t require changing. How to Check Because this operation can be a little difficult, you may choose to have this done at a GM dealership Service Department. If you do it yourself, be sure to follow all the instructions here, or you could get a false reading.

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, starting a fire. Be sure an accurate reading if you check your transmission fluid.

to get

Check the fluid level only when your engine is off, the vehicle is parked on a level place and the transmission is cool enough for you to rest your fingers on the transmission case.

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Then, follow these steps:

1. Remove the filler plug. 2. Check that the lubricant level is up to the bottom of the filler plug hole. 3. If the fluid level is good, install the plug and be sure it is fully seated. If

the fluid level is low, add more fluid as described in the next steps.

How to Add Fluid Here’s how to add fluid. Refer to the Maintenance Schedule to determine what kind of fluid to use. See “Recommended Fluids and Lubricants” in the Index. 1. Remove the filler plug. 2. Add fluid at the filler plug hole. Add only enough fluid to bring the

fluid level up to the bottom of the filler plug hole.

3. Install the filler plug. Be sure the plug is fully seated. Hydraulic Clutch The hydraulic clutch in your vehicle is self-adjusting. A slight amount of play (1/4 inch to 1/2 inch) in the pedal is normal.

When to Check and What to Use

Refer to the Maintenance Schedule to determine how often you should check the fluid level in your clutch master cylinder reservoir and for the proper fluid.

See “Owner Checks and Services” and “Recommended Fluids and Lubricants’’ in the Index.

How to check The proper fluid should be added if the level does not reach the bottom of the diaphragm when it’s in place in the reservoir. See the instructions on the reservoir cap. Rear Axle When to Checkand 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.

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Whai to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See “Recommended Fluids and Lubricants” in the Index. Four- Wheel Drive Most lubricant checks in this section also apply to four-wheel-drive vehicles. 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.

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. If the differential is at operating temperature (warm), add enough lubricant to raise the level to the bottom of the filler plug hole.

If the differential is cold, add enough lubricant to raise the level to 1/2 inch (12 mm) below 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. Engine 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. The proper coolant for your vehicle will:

Give freezing protection down to -20°F (-29”C), or -34°F (-37°C) in Canada and for vehicles with the cold climate option. Give boiling protection up to 258°F (1 25°C). Protect against rust and corrosion. Help keep the proper engine temperature. Let the warning lights and gages work as they should.

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What to Use use a mixture of one-half clean water (preferably distilled) and one-half antifreeze that meets “GM Specification 6038-M,” which won’t damage aluminum parts. You can also use a recycled coolant conforming to “GM Specification 6038-M” with a complete coolant flush and refill. If you use this mixture, you don’t need to add anything else.

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.

Some conditions, such as air trapped in the cooling system, can affect the coolant level in the radiator. Check the coolant level when the engine is cold and follow the steps under “Adding Coolant” for the proper way to add coolant. If you have to add coolant more than four times a year, have your dealer check your cooling system.

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 -Gas Engines

The coolant recovery tank is located on the passenger side at the rear comer of the engine compartment

To Check Coolant When your engine is cold, the coolant level should be at COLD, or a little higher. When your engine is warm, the level should be up to HOT, or a little higher.

To Add Coolant If you need more coolant, add the proper mix at the coolant recovery tank.

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

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Adding Coolant -Diesel Engines

..

The coolant surge tank is located on the passenger side at the rear corner of the engine compartment

To Check Coolant When your engine is cold, the coolant level should be at the COLD mark, or a little higher. When your engine is warm, the level should be above the COLD mark.

If this light comes on, it means you're low on engine coolant.

To Add Coolant If you need more coolant, add the proper mix ut the surge tank, but only when the engine is cool. Open the bleed valve on the thermostat housing to allow trapped air out of the system. Close the bleed valve when coolant begins to flow out.

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Radiator Pressure Cap-Gas Engines

The radiator pressure cap must be tightly installed with the arrows on the cap lined up with the ovefflow tube on the radiator filler neck.

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 line up with the overflow tube on the radiator filler neck.

on the cap

Surge Tank Pressure Cap- Diesel Engines

The surge tank pressure cap must be tightly installed with the arrows on the cap lined up with the top tube of the coolant surge tank.

NOTICE: Your surge tank pressure cap 1s a unique 15 psi (105 kPa) pressure-type cap for use with surge tank cooling systems only. It 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 top tube of the coolant surge tank.

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 you replace your thermostat, an AC@ thermostat is recommended. Power Steering Fluid

I NOTICE:

Always turn the engine off before checking or adding power steering fluid. The power steering pump cap is close to the fan and other moving parts.

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How To Check Power Steering Fluid

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.

0 When the engine compartment is hot, the level should be at the FULL mark. When the engine compartment is cool, the level should be at the FULL COLD mark.

Whaf fo Add Refer to the Maintenance Schedule to determine what kind of fluid to use. See “Recommended Fluids and Lubricants” in the Index.

NOTICE: When adding power steering fluid or making a complete fluid change, always use the proper fluid. Failure to use the proper fluid can cause leaks and damage hoses and seals.

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Hydro-Boost Brake System (Hydraulic Pump) The power steering pump is also used as the Hydro-boost pump. Refer to “Power Steering System” in this section when checking fluid level or adding fluid. Windshield Washer Fluid To Add

Open the cap labeled “WASHER FLUID ONLY.” Add washer fluid until the bottle is full.

NOTICE: 0 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 3/4 full when it’s very cold. This allows for expansion, 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.

Brakes

Brake Master Cylinder

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

There are only two reasons why the brake fluid level in your master cylinder 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.

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

in the Index.

To Check 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 ‘“IN‘’ and below the top of each window.

What to Add When you do need brake fluid, use only DOT-3 brake fluid - such as Delco Supreme ll@ (GM Part No.1052535). Use new brake fluid from a sealed container only, and always clean the brake fluid reservoir cap before removing it.

0 Don’t let someone put in the wrong kind of fluid. 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’li have to be replaced. Brake fluid can damage paint, so 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).

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. 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 brakes replaced, have the rear brakes inspected, too. Brake linings should always be replaced as complete axle sets.

Brake Pedal Trave/ 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. T f 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.

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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. Vehicles we design and test have top-quality GM brake parts in them, as your vehicle does when it is new. 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 genuine 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. Other Maintenance Items Front Suspension and Steering Linkage Your maintenance schedule will tell you how often to lubricate the fittings. See “Recommended Fluids and Lubricants” in the Index for the proper lubricant to use.

Front Wheel Bearing Your vehicle has front wheel bearings that must be cleaned and repacked. Your maintenance schedule will tell you how often this must be done.

Front Shock Absorbers The front shock absorbers of your vehicle do many things. They help the vehicle ride smoothly and also control the travel of the suspension system. When the shock absorbers are serviced, any replacement shock absorbers must be the same as the original equipment shock absorbers in both extended length and strength.

I NOTICE:

If you use shock absorbers that are not the same as the original shock absorbers, the shock absorbers or suspension system could be damaged.

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Wheel Nut Torque For vehicles with dual wheels, when the vehicle, wheel or fasteners are new, have the torque set at the first 100, 1,000 and 6,000 miles (160, 1600 and 9600 km). Use the torque specified in the appropriate Specification Chart later in this section.

Single Belt Accessory Drive If your new vehicle uses a serpentine belt, it is lighter, and more durable than systems with several belts. The belt ruIl 'li'vkf br iir6und the pulleys or^ the engine. A tensione'r'n'iay be used to keep the belt tight at all times. The tensioner also makes replacing the belt easier if you need to replace the belt, be sure to get the correct replacement belt. Your dealership or parts supplier can help you with this. The Accessory Drive Belt Routing label on your vehicle will show you how to route the belt your vehicle uses. Windshield Wiper Blade lnserts

To replace your windshield wiper blade inserts, lift the wiper arm and rotate the blade until it is facing away from the windshield.

Unlatch the end of the insert from the holding clips. Remove the insert and slide a new one in place. Make sure the blade is secured in the clips. Air Conditioning Every now and then have your dealership check your air conditioning system to be sure it has not lost any cooling ability. If you think the system is not working properly, have your dealership check it out as soon as possible. The air conditioning will not work when the temperature is below 40°F (4°C).

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Fluid Leak Check After the vehicle has been parked for a while, inspect the surface under the vehicle for water, oil, fuel or other fluids. Water dripping from the air conditioning system after it has been used is normal. If you notice fuel leaks or fumes, the causes should be found and corrected at once. Lubrication Accelerator Control System Your maintenance schedule will tell you how often the accelerator linkage pivot points must be lubricated. See “Recommended Fluids and Lubricants” in the Index for the proper lubricant to use. Accelerator cables and cruise control cables should not be lubricated. Any cables that are worn or are hard to pull should be replaced.

Hood Latches and Hood Hinge Your maintenance schedule will tell you how often to lubricate the hood latch and hood hinge assembly. See the Index under “Recommended Fluids and Lubricants” for the proper lubricant to use.

Propeller Shaft Slip Splines See your maintenance schedule to find out how often the slip splines must be lubricated. See “Recommended Fluids and Lubricants” in the Index for the proper lubricant to use.

Constant Velocity Joints See your maintenance schedule to find out how often the constant velocity joints must be lubricated. See “Recommended Fluids and Lubricants” in the Index for the proper lubricant to use.

Normal use of your vehicle will cause metal to metal wear at some points on the cab and body if they are not lubricated. For exposed surfaces, such as door checks, door lock bolts, lock striker plates, dovetail bumper wedges, etc., a thin film of engine oil should be applied. The seat adjusters and seat track should be lubricated with chassis grease. Door weather strips and rubber hood bumpers should be lightly coated with a rubber lubricant. Never use too much of any lubricant and be sure to wipe up any extra lubricant when you are finished.

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Your maintenance schedule will tell you how often to lubricate these items. See “Recommended Fluids and Lubricants” in the Index for the proper lubricant to use. Lock Cylinders To be sure your locks operate properly, they must be lubricated. Your vehicle’s maintenance schedule will tell you how often to lubricate them. See “Recommended Fluids and Lubricants” in the Index for the proper lubricant to use. You should not use penetrating oils because they could wash out the factory installed lubricant and cause the lock to bind. De-icers which contain alcohol could also wash away the lubricant, so be sure to lubricate the lock after using a de-icer of this type.

Tailgate Handle The tailgate handle pivot points on your vehicle should be lubricated to keep it working smoothly. Your maintenance schedule will tell you how often to lubricate the handle. See “Recommended Fluids and Lubricants” in the Index for the proper lubricant to use. Battery Every new GM 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 catalog 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.

Contact your dealer to learn how to prepare your vehicle for longer storage periods.

Bulb Replacement Before you replace any bulbs, be sure that all the lights are off and the engine isn't running. Sealed Beam Headlights

1. Remove the four screws from the headlight retainer. 2. Pull the headlight

out and remove the retainer.

3. Unplug and remove the headlight.

4. Plug in the new

headlight and put it in place. 5. Install the

retainer to the headlight and tighten the screws.

Halogen Bulbs

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NOTICE: Avoid touching the bulb or letting it come in contact with anything damp. Oil from your skin or moisture on the bulb can cause the bulb to explode when it is turned on. If either comes in contact with the bulb, clean it with alcohol or a suitable degreaser and wipe the bulb dry.

Composite Headlights

.'

--6n

1 . Remove the two screws at the top of the radiator support.

2. Pull the headlight

lens assembly out.

3. Unplug the electrical connector.

4. Turn the bulb to

the left and remove it.

5. Put the new bulb in the lens assembly and turn it to the right until it is

tight.

6. Plug in the electrical connector. 7. Put the headlight lens assembly back into the vehicle. Install and

tighten the two screws.

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Front Parkingnurn Signal Lights with Sealed Beam Headlights 1. Remove the two screws at the inside edge of the parkinghurn signal

light assembly.

2. Remove the light assembly by swinging it out from the inside edge and

sliding it out at the outside edge.

3. Squeeze the tab on the side of the light socket while turning the socket

to the left.

4. Pull the socket out of the light assembly. 5. Push in gently on the bulb, turn it to the left and remove it from the

socket.

6. Put the new bulb in the socket, gently press in on the bulb and turn it to

the right until it is tight.

7. Put the socket back into the light assembly and turn it socket to the

right until it locks.

8. Put the parkinghrn signal light assembly back into the vehicle and

tighten the screws.

Front Parkingnurn Signal Lights with Composite Headlights

1. Remove the

screws and take out the parkinghum signal light assembly.

2. Squeeze the tab on the side of the light socket while turning the socket to the left.

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the left and remove it from the socket.

5. Put the new bulb in the socket, gently press in on the bulb and turn it to

the right until it is tight.

6. Put the socket back into the light assembly and turn it socket to the

right until it locks.

7. Put the parking/turn signal light assembly back into the vehicle and

tighten the screws.

Side Marker Lights with Sealed Beam and Composite Headlights

1. Remove the

screws and pull out the parking/tum signal light assembly.

2. Reach through the opening and turn the side marker bulb socket to the left and remove it.

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3. Pull the bulb

straight out of the socket.

4. Put a new bulb into the socket and push it in until it is tight.

5. Put the socket back into the side marker assembly and turn it to the

right to tighten it.

6. Replace the parking/turn signal light assembly and tighten the screws. Roof Marker Lights

1. Remove the

screws and lift off the lens.

2. Pull the bulb

straight out of the socket.

3. Put a new bulb into the socket and push it in until it is tight. 4. Replace the lens and tighten the screws.

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Center High Mount Stop/amp (CHMSL)

“,Gar-& ... “B 3

The individual bulbs in the CHMSL are not replaceable. See your dealer for assistance.

Rear Lights 1. Open the tailgate or rear doors. 2. Remove the two black plastic plugs in the rear light

holes.

assembly access

3.

Remove the two rear light assembly screws inside the fender and pull out the light assembly. You may want to use a magnetic screwdriver when removing the screws.

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4. Remove the

screws from the bulb retainer and take the bulb retainer off of the light assembly. 5. Pull the old bulb straight out of the socket.

6. Put in a new bulb and push it in until it is tight. 7. Replace the bulb retainer. 8. Replace the rear light assembly and tighten the screws. You may want

to use a magnetic screwdriver when installing the screws.

9. Close the tailgate or rear doors. 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 in the wiring itself. This greatly reduces the chance of fires caused by electrical problems. See “Fuses and Circuit Breakers” in the Index for more information.

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

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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. This protects the circuit until the current load returns to normal or the problem is fixed . Trailer Wiring Harness The optional seven-wire trailer wiring harness is protected by an in-line fuse in the battery feed wire. This fuse is near the junction block. See “Trailer Wiring Harness” in the Index for more information.

Fuse Block

The fuse block is behind an access door at the bottom of the instrument panel, next to the parking brake release lever.

You can remove fuses with a fuse extractor, if you have one.

To remove fuses if you don’t have one, hold the end of the fuse between your thumb and index finger and pull straight out. 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

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the radio its fuse, if it is of the value you need. Replace

some feature of your vehicle that you can get along without-like or cigarette lighter-and use it as soon as you can. See “Fuses and Circuit Breakers’’ in the Index for more information. Exhaust System To help prevent damage to your exhaust system, do not continue to drive your vehicle if you notice:

Engine misfiring Loss of performance Other unusual operating conditions

Have your engine and exhaust system serviced regularly.

Three- Way Catalytic Converter (gas engines) Your vehicle’s three-way catalytic converter is designed to reduce the pollutants in your vehicle’s exhaust. Use only unleaded fuel in your vehicle. If you use leaded fuel, you could damage your three-way catalytic converter and other engine components.

Three- Way Catalytic Converter (diesel engines) Your vehicle’s three-way catalytic converter is designed to reduce the particulates in your vehicle’s exhaust. If your vehicle’s three-way catalytic converter ever needs to be replaced, it must be replaced with a three-way catalytic converter intended for use with diesel engines only.

Engine Contro/ Module System (All T61 equipped vehicles and diesel engine vehicles below 8,500 lbs. GVWR) Gasoline Engines This system has an oxygen sensor (02) that helps keep your engine’s air-fuel mixture at a proper level. Use only unleaded fuel in your vehicle. If you use leaded fuel, you could damage your oxygen sensor (02) and three-way catalytic converter. Diesel Vehicles Below S,5UU LBS. GVWR This system monitors engine speed and throttle position. It adjusts exhaust gas recirculation to limit emissions.

Malfunction Indicator (SERVICE ENGINE SOON) Lamp The Malfunction Indicator (SERVICE ENGINE SOON) Lamp on your instrument panel lets you know when your emission system needs service. The light will come on briefly when you start your engine to let you know that the system is working. If it does not come on when you start your engine, or if it comes on and stays on while you're driving, your system may need service. Your vehicle should still be driveable, but you should have your system serviced right away. Secondary Air Injection Reaction (AIR) System You may have this system. It has a control valve that will direct air to where it is needed. If the AIR system needs service, your Malfunction Indicator (SERVICE ENGINE SOON) Lamp on your instrument panel will come on. Loading Your Vehicle

The CertificatiodTire label is found on the rear edge of the driver's door.

MFD BY GENERAL MOT0 RSCORP

q----p nri u TIRE SIZE

MODEL [ I S P E E D

PSllKPA (COLD)

i IN EFFECT

RTG

FilM

SEE OWNERS MANUAL FOR ADDITIONAL INFORMATION

The label shows the size of your original tires and the inflation pressures needed to obtain the gross weight capacity of your vehicle. This is called the. GVWR (Gross Vehicle Weight Rating). The GVWR includes the weight of the vehicle, all occupants, fuel and cargo. The Certificatioflire label also tells you the maximum weights for the front and rear axles, called Gross Axle Weight Rating (GAWR). To find out the actual loads on your front and rear axles, you need to go to a weigh station and weigh your vehicle. Your dealer can help you with this. Be sure to spread out your load equally on both sides of the centerline.

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Never exceed the GVWR for your vehicle, or the GAWR for either the front or rear axle. And, if you do have a heavy load, you should spread it out.

Using heavier suspension components to get added durability might not change your weight ratings. Ask your dealer to help you load your vehicle the right way.

NOTICE: Your warranty does not cover parts or components that fail because of overloading.

If you put things inside your vehicle-like suitcases, tools, packages, or anything else-they go as fast as the vehicle goes. If you have to stop or turn quickly, or if there is a crash, they’ll keep going.

Trailering Package

If your vehicle comes with the Trailering Package, there is also a load rating which includes the weight of the vehicle and the trailer it tows. This rating is called the Gross Combination Weight Rating (GCWR). When you weigh your trailer, be sure to include the weight of everything you put in it. And, remember to figure the weight of the people inside as part of your load. Your dealer can help you determine your GCWR.

Trailer Recommendations You must subtract your hitch loads from the CWR for your vehicle. Weigh your vehicle with the trailer hitch attached, so that you won’t go over the GVWR or the GAWR. You’ll get the best performance if you spread out the weight of your load the right way, and if you choose the correct hitch and trailer brakes. For more information, see “Trailer Towing’’ in the Index.

Add-on Equipment When you carry removable items, like snow plow blades, you may need to put a limit on how many people you carry inside your vehicle. Be sure to weigh your vehicle before you buy and install the new equipment.

NOTICE: Your warranty doesn’t cover parts or components that fail because of overloading.

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Tires We don’t make tires. Your new vehicle comes with high quality tires made by a leading tire manufacturer. These tires are warranted by the tire manufacturers and their warranties are delivered with every new vehicle. If your spare tire is a different brand than your road tires, you will have a tire warranty folder from each of these manufacturers.

Inflation - Tire Pressure The Certification/Tire label which is on the rear edge of the driver’s door, or on the incomplete vehicle document in the cab, 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 a mile.

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You can operate some vehicles at reduced inflation pressures only when you’ll be carrying reduced loads. On those vehicles, the minimum cold inflation pressures for a typical reduced load are printed on the “Improved Ride Tire Pressure” label located on the driver’s door. Weigh the vehicle to find the load on each tire and see the label for the minimum cold inflation pressures for that load.

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:

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

If your tires have too much air (overinflation), you can get: 0 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. Simply looking at the tires will not tell you the pressure, especially if you have radial tires - which may look properly inflated even if they’re underinflated. If your tires have valve caps, be sure to put them back on. They help prevent leaks by keeping out dirt and moisture.

Special Tire lnflation

If you have 16 inch tires on your vehicle, and:

- You’ll be driving for very long at speeds of 66 mph (105 k d h ) to

75 mph (120 km/h) where legal, inflate tires to 10 psi (70 kPa) more than the recommended cold inflation pressures.

- You’ll be driving for very long at speeds of 76 mph ( 120 k d h ) to 85 mph (1 35 k d h ) where legal, cold inflation pressures should be increased by 10 psi (70 kPa) and you must also reduce axle load capacity by 10%. Do not drive over 85 mph (135 km/h) even if it’s legal.

Inflation pressures should never exceed 10 psi (70 kPa) above the inflation specified for the maximum load of the tire.

Tire lnspection and Rotation To make your tires last longer, have them inspected and rotated at the mileages recommended in the Maintenance Schedule. See “Scheduled Maintenance Services” in the Index.

FRT

FRT

Use this rotation pattern.

If your vehicle has front tires with different load ratings or tread designs (such as all season vs. on/off road) than the rear tires, don’t rotate your tires front to rear. After the tires have been rotated, adjust the front and rear inflation pressure as shown on the Certificationmire label. Make certain that all wheel nuts are properly tightened. See “Wheel Nut Torque” in the Index.

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When /t ’s Time for New Tires

-L E

TREAD WEAR INDICATORS 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 2/32 inch (1.6 mm) or less of tread remaining.

You need a uew tire if

0 You can see the indicators at three or more places around the tire.

You can see cord or fabric showing through the tire’s rubber. The tread or sidewall is cracked, cut or snagged deep enough to show cord or fabric.

0 The tire has a bump, bulge or split.

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

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.)

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 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.

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Traction - A, B, C The traction grades, from highest to lowest are: A, B, and C. 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. Temperature - A, By 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 buildup and possible tire failure. These grades are molded on the sidewalls of passenger car tires. While the tires available as standard or optional equipment on General Motors vehicles may vary with respect to these grades, all such tires meet General Motors performance standards and have been approved for use on General Motors vehicles. All passenger type (P Metric) tires must conform to Federal safety requirements in addition to these grades. 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. In most cases, you will not need to have your wheels aligned again. 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.

in combination, can cause heat

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Wheel Replacement Replace any wheel that is bent, cracked or badly rusted. 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 GM model.

NOTICE: The wrong wheel can also cause problems with bearing life, brake cooling, speedometer/odometer calibration, headlight aim, bumper height, vehicle ground clearance, and tire or tire chain clearance to the body and chassis.

Used Replacement Wheels

Tire Chains

NOTICE: If your vehicle has LT265/75R16 size tires, don’t use tire chains; they can damage your vehicle. If you have a tire size other than LT265/75Rl6, 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 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 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 brea.the 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 0 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.

NOTICE: Don’t use any of these unless this manual says you can. In many uses, these will damage your vehicle: 0 Laundry Soap 0 Bleach 0 Reducing Agents

CIeaning 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 GM 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:

0 Always read the instructions on the cleaner label.

Clean up stains as soon as you can - before they set. Use a clean cloth or sponge, and change to a clean area often. A soft brush may be used if stains are stubborn. Use solvent-type cleaners in a well-ventilated area only. If you use them, don’t saturate the stained area. If a ring forms after spot cleaning, clean the entire area immediately or it will set.

Using Foam-Type Cleaner on Fabric

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. Don’t rub it roughly. As soon as you’ve cleaned the section, use a sponge to remove me suds. Rinse the section with a clean, wet sponge. Wipe off what’s left with a slightly damp paper towel or cloth.

0 Then dry it immediately with a blow dryer or a heat lamp.

NOTICE: Be careful with a hair dryer or heat lamp. You could scorch the fabric.

0 Wipe with a clean cloth. 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:

Gently scrape excess soil from the trim material with a clean, dull knife or scraper. Use very little cleaner, light pressure and clean cloths (preferably cheesecloth). Cleaning should start at the outside of the stain, “feathering” toward the center. Keep changing to a clean section of the cloth. When you clean a stain from fabric, immediately dry the area with an air hose, hair dryer, or heat lamp to help prevent a cleaning ring. (See the previous NOTICE.)

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Fabric Protection Your vehicle has upholstery and trim cifpet that has been treated with Scotchgard" Fabric Protector, a 3M product. Scotchgard" 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 trim carpet often to keep it looking new. Further information on cleaning is available by calling 1-800-433-3296 (in Minnesota, 1-800-642-6 167).

Special Cleaning Problems

Greasy or Oily Stains Such as grease, oil, butter, margarine, shoe polish, coffee with cream, chewing gum, cosmetic creams, vegetable oils, wax crayon, tar and asphalt.

Carefully scrape off excess stain. Follow the solvent-type instructions described earlier. Shoe polish, wax crayon, tar and asphalt will stain if left on a vehicle 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 Such as catsup, coffee (black), egg, fruit, fruit juice, milk, soft drinks, wine, vomit, urine and blood.

Carefully scrape off excess stain, then sponge the soiled area with cool water. If a stain remains, follow the foam-type instructions described earlier.

0 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.

0 If needed, clean lightly with solvent-type cleaner.

Combination Stains Such as candy, ice cream, mayonnaise, chili sauce and unknown stains.

Carefully scrape off excess stain, then clean with cool water and allow to dry. If a stain remains, clean it with solvent-type cleaner.

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Cleaning Vinyl Use warm water and a clean cloth.

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 solvent-type vinyl cleaner.

Cleaning Leather Use a soft cloth with lukewarm water and a mild soap or saddle soap. For stubborn stains, use a mild solution of 10% isopropyl alcohol (rubbing alcohol) and 90% water. Never use oils, varnishes, solvent-based or abrasive cleaners, furniture polish or shoe polish on leather. Soiled leather should be cleaned immediately. If dirt is allowed to work into 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. Care of Safety Belts Keep belts clean and dry.

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Glass 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. 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, Backglass and Wiper Blades If the windshield is not clear after using the windshield washer, or if the wiper blade chatters when running, wax or other material may be on the blade or windshield. Clean the outside of the windshield with GM Windshield Cleaner, Bon-Ami Powder@ (GM Part No. 105001 1). The windshield is clean if beads do not form when you rinse it with water. Clean the blade by wiping vigorously with a cloth soaked in full strength windshield washer solvent. Then rinse the blade with water. Wiper blades should be checked on a regular basis and replaced when worn. 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 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 a 100% cotton towel to avoid surface scratches and water spotting. High pressure vehicle washes may cause water to enter your vehicle.

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Finish Care Occasional waxing or mild polishing of your vehicle 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 may have a “ba~ec~at/clearc~at” 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.

paint finish. The clearcoat

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

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 GM 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. Aluminum Wheels (If So Equipped) Your aluminum wheels have a protective coating similar to the painted surface of your vehicle. Don’t use strong soaps, chemicals, chrome polish, abrasive cleaners or abrasive cleaning brushes on them because you could damage this coating. After rinsing thoroughly, a wax may be applied.

NOTICE: If you have aluminum wheels, don’t use an automatic vehicle wash that has hard silicon carbide cleaning brushes. These brushes can take off the protective coating.

White Sidewall Tires Your GM dealer has a GM White Sidewall Tire Cleaner. You can use a stiff brush with the cleaner.

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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 & Lubricants’’ in the Index.) 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. Foreign Material Calcium chloride and other salts, ice melting agents, road oil and tar, tree sap, bird droppings, chemicals from industrial chimneys, and other foreign matter can damage your vehicle’s finish if they remain on painted surfaces. Use cleaners that are marked safe for painted surfaces to remove foreign matter. 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 vehicle washing system can do this for you. Chemical Paint Spotting Some weather and atmospheric conditions can create a chemical fallout. Airborne pollutants can fall upon and attack painted surfaces on your vehicle. This damage can take two forms: blotchy, ringlet-shaped discolorations, and small irregular dark spots etched into the paint surface.

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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 comes first. Appearance Care Materials Chart PART NO. 1050172

PRODUCT 16 oz. (0.473L) Tar and Road Oil Remover

USAGE

SIZE

Removes old waxes, polishes, tar and road oil Removes rust and corrosion on chrome and stainless steel Cleans white and black tires Spot and stain removal on leather or vinyl Spot and stain removal on cloth and fabric Glass cleaning and spot cleaning on vinyls Cleans vinyl and cloth on door trim, seats, and carpet-also tires and mats. Cleaning of vinyl tops

Vinyl top dressing Spot and stain removal on cloth and fabric Exterior wash

Exterior cleaner and

1050173

1050 174

1050214

16 02. (0.473L) Chrome

Cleaner and Polish

I6 oz. (0.473L) White Sidewall

Tire Cleaner 32 02. (0.946L) Vinyl Leather

Cleaner

1050244

16 02. (0.473L) Fabric Cleaner

1050427

23 oz. (0.680L) Glass Cleaner

I050429

6 Ibs. (2.72 kg) Multi-Purpose

Powder Cleaner

1050729

1051055 1051398

1052870

105020 1

8 oz. (0.237L) Vinyl Top

Cleaner

16 oz. (0.4731) Preservatone 8 02. (0.237L) Spot Lifter

16 oz. (0.473L) Wash-Wax

(conc.)

I6 oz. (0.473L) Magic Mirror Cleaner-Polish

polish

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Vehicle Identification Number (VIN)

This is the legal identifier for your vehicle. It appears on a plate in the front corner of the instrument panel, on the driver’s side. You can see it if you look through the windshield from outside your vehicle. The VIN also appears on the Vehicle Certification and Service Parts labels and the certificates of title and registration.

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Engine Identification The eighth character in your VIN is the engine code. This code will help you identify your engine, specifications, and replacement parts.

I-

4-

W f

cv

E a

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Service Parts Identification Label You’ll find this label on the inside of the glove box.

WHEELBASE

MODEL DESIGNATION

OPTION CONTENT

K19 K64 6BJ 62L 62U 67D 671

LC3 M X l M 3 1 NA5 NB1 Q M X V K 3 V C 2 V Y l V Y 4 V 7 3 Y 1 9 Z J 7

679 7BJ 8HJ

BHJ

PAINT TECHNOLOGY

ORDER NUMBER

EXTERIOR COLORS

It’s very helpful if you ever need to order parts. On this label is:

0 your VIN,

the model designation, paint information, and a list of all production options and special equipment.

Be sure that this label is not removed from the vehicle. Add-on E/ectrical Equipment

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

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Specification Charts 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 Identification -Gas Engines

Engine Type VIN Code Fuel System Produced By Emissions

5.7L V8

TBIT

U.S., CAN. JJD*/HD**

“Light Duty Emissions with 8500 GVWR and below or: **Heavy Duty Emissions with 8501 GVWR and above ?Throttle Body Injection

Engine Identification -Diesel Engines

Engine Type VIN Code Fuel System Produced By Emissions

6.5L V8

6.5L V8

Turbo Diesel

Turbo Diesel

U.S. LD

U.S. HD

Wheel Nut Torque MODEL C 1500 K 1500, C-K 2500 C-K 2500

DESCRIPTION 5 bolts (14mm) 6 bolts (14mm) 8 bolts (14mm)

TORQUE

120 ft. lbs. (1 60 Nom) 120 ft. lbs. ( 1 60 Nom) I20 ft. Ibs. ( I 60 Nom)

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Cooling System Capacity VIN ENGINE 5.7L 6.5L 6.5L 7.4L

QTY Without AfC* 17.5 Quarts (1 6.5 Liters) 25 Quarts (23.5 Liters) 26.5 Quarts (25 Liters) 23 Quarts (22 Liters)

QTY With A/C* 18 Quarts ( I7 Liters) 25 Quarts (23.5 Liters) 26.5 Quarts (25 Liters) 25 Quarts (23.5 Liters)

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

Crankcase Capacity ENGINE

5.7L 6.5L 6.5L 7.4L

VIN ST F?

QTY Without Filter“ 4 Quarts (3.8 Liters)

6 Quarts (5.7 Liters)

QTY With Filter:$ 5 Quarts (4.8 Liters) 7 Quarts (6.5 Liters) 7 Quarts (6.5 Liters) 7 Quarts (6.5 Liters)

After refill, the level MUST be checked as outlined under “Engine Oil And Filter Recommendations” in Section 5. *All quantities are approximate. ?Oil filter should be changed at EVERY oil change. Fuel Tank Capacity TYPE Gasoline/Diesel Utility Model -Standard Wagon Model-S

30 Gallons ( I 13 Liters) 42 Gallons ( I 59 Liters)

QUANTITY

tandard

All quantities are for a completely dry tank and are approximate.

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Service Replacement Part and Filter Recommendations -Gas Engines

Engine VIN Oil Filter Air Cleaner Filter PCV Valve Spark Plugs‘% Fuel Filter Radiator Cap