1994 Pontiac Firebird Owners Manual

damaged.

When the towing service arrives, let the tow operator know that this manual contains detailed towing instructions and illustrations. The operator may want to see them.

;.

rl

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I I .

Problems on the Road When your vehicle is being towed, have the ignition key off. The steering wheel should be clamped in a straight-ahead position, with a clamping device designed for towing service. Do not use the vehicle’s steering column lock for this. The transmission should be in “Neutral” and the parking brake released. Don’t have your vehicle towed on the rear wheels, unless you must. If the vehicle must be towed on the rear wheels, don’t go more than 35 mph (55 km/h) or farther than 50 miles (80 km) or your transmission will be damaged. If these limits must be exceeded, then the rear wheels have to be supported on a dolly.

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Front Towing Hook-Ups Attach T-hook chains to slots in frame rearward of front wheels on both sides.

NOTICE: Do not attach winch cables or “J” hooks to suspension components when using car carrier equipment. Always use T-hooks inserted in the T-hook slots.

I I NOTICE:

Do not tow with sling-type equiment or fascia/fog light damage will occur. Use wheel lift or car carrier equip- ment. Additional ramping may be required for car carrier equipment. Use safety chains and wheel straps.

NOTICE: Towing a vehicle over rough surfaces could damage a vehicle. Damage can occur from vehicle-to-ground or vehicle-to-wheel-lift-equipment contact. To help avoid damage, install a towing dolly and raise vehicle until adequate clearance is obtained between the ground and/or wheel-lift equipment.

Attach a separate safety chain around outboard end of each lower control arm.

~ T I C E :

I Take care not to damage the brake

pipes and hoses or the ABS sensor and wiring.

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Problems on the Road c

NOTICE:

Do not tow with sling-type equip- ment or rear bumper valance will be damaged. Use wheel lift or car carrier equip- ment. Additional ramping may be required for car carrier equipment. Use safety chains and wheel straps.

Rear Towing Hook-Ups Attach T-hook chains in front of rear wheels in bottom of frame rail on both sides.

NOTICE: Do not attach winch cables or “J” hooks to suspension components when using car carrier equipment. Always use T-hooks inserted in the T-hook slgts.

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Attach a separate safety chain around outboard end of the rear axle.

I NOTICE: I Take care not to damage the brake

pipes and cables.

If Steam Is Coming from Your Engine:

I NOTICE:

Towing a vehicle over rough surfaces could damage a vehicle. Damage can occur from vehicle-to-ground or vehicle-to-wheel-lift-equipment contact. To help avoid damage, install a towing dolly and raise vehicle until adequate clearance is obtained between the ground and/or wheel-lift equipment.

Engine Overheating

You will find a coolant temperature gage on your Pontiac’s instrument panel. You may also find a low coolant warning light on your Pontiac instrument panel.

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Problems on the Road

If you get the overheat warning with no sign of steam, try this for a minute or so: 1. If you have an air conditioner, turn it

off.

2. Turn on your heater to full hot at the

highest fan speed and open the window as necessary.

3. Try to keep your engine under load

(in a drive gear where the engine runs slower).

Cooling System When you decide it’s safe to lift the hood, here’s what you’ll see on the V6 engine: 1. Coolant recovery tank 2. Radiator pressure cap 3. Electric engine fan

If you no longer have the overheat warning, you can drive. Just to be safe, drive slower for about ten minutes. If the warning doesn’t come back on, you can drive normally. If the warning continues, pull over, stop, and park your vehicle right away. If there’s still no sign of steam, you can idle the engine for two or three minutes while you’re parked, to see if the warning stops. But then, if you still have the warning, TURN OFF THE ENGINE AND GET EVERYONE OUT OF THE VEHICLE until it cools down. You may decide not to lift the hood but to get service help right away.

If your engine catches fire because you keep driving with no coolant, your vehicle can be badly darhaged. The costly repairs would not be covered by your warranty.

If No Steam Is Coming from Your Engine: If you get the overheat warning but see or hear no steam, the problem may not be too serious. Sometimes the engine can gel a little too hot when you:

Climb a long hill on a hot day. Stop after high speed driving. 0 Idle for long periods in traffic. 0 Tow a trailer.

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On the V8 engine you’ll see this: 1. Coolant recovery tank 2. Radiator pressure cap 3. Electric engine fans

If the coolant inside the coolant recovery tank is boiling, don’t do anything else until it cools down. When it is cool, remove the coolant recovery tank cap and look at the dipstick. The coolant level should be at or above “FULL COLD.” If it isn’t, you may have a leak in the radiator hoses, heater hoses, radiator, water pump or somewhere else in the cooling system.

NOTICE: Engine damage from running your engine without coolant isn’t covered by your warranty.

If there seems to be no leak, check to see if the electric engine fan is running. If the engine is overheating, the fan should be running. If it isn’t, your vehicle needs service.

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Problems on the Road

How to Add Coolant to the Coolant Recovery Tank If you haven’t found a problem yet, but the coolant level isn’t at or above the “FULL COLD’ mark, add a 50/50 mixture of clean water (preferably distilled) and a proper antifreeze at the coolant recovery tank. (See “Engine Coolant” in the Index for more information about the proper coolant mix.)

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When the coolant in the coolant recovery tank is at or above the “FULL COLD’ mark, start your vehicle. If the overheat warning continues, there’s one more thing you can try. You can add the proper coolant mix directly to the radiator, but be sure the cooling system is cool before you do it.

NOTICE: In cold weather, water can freeze and crack the engine, radiator, heater core and other parts. Use the recommended coolant.

2. Then keep turning the pressure cap,

but now push down as you tum it. Remove the pressure cap.

How to Add Coolant to the Radiator :3.4L L32 (Code S) Engine) I. You can remove the radiator pressure

cap when the cooling system, including the radiator pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly to the left until it first stops. (Don't pres: down while turning the pressure cap.) If you hear a hiss, wait for that to stor A hiss means there is still some pressure left.

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Problems on the Road

3. Fill the radiator with the proper mix,

up to the base of the filler neck.

4. Then fill the coolant recovery tank to

“FULL COLD.”

5. Put the cap back on the coolant

recovery tank, but leave the radiator pressure cap off.

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6.

7.

Start the engine and let it run until you can feel the upper radiator hose getting hot. Watch out for the engine fan(s). By this time the coolant level inside the radiator filler neck may be lower. If the level is lower, add more of the proper mix through the filler neck until the level reaches the base of the filler neck.

Then replace the pressure cap. At any time during this procedure if coolant begins to flow out of the filler neck, reinstall the pressure cap. Be sure the arrows on the pressure cap line up likl this.

How to Add Coolant to the Radiator (5.7L LT1 (Code P) Engine)

NOTICE: The LTl engine (Code P) has a specific radiator fill procedure. Failure to follow this procedure could cause your engine to overheat and be severely damaged.

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Problems on the Road

2. Then keeb turning the pressure cap, but now push down as you turn it. Remove the pressure cap.

1. You can remove the radiator

pressure cap when the cooling system including the radiator pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly to the left until it first stops. (Don? pres5 down while turning the pressure cap.) If you hear a hiss, wait for that to stop A hiss means there is still some pressure left.

5. After the engine cools, open the air

bleed valves on the heater return hose and water pump inlet.

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4. Fill with the proper mix. Add coolant

until you see a steady stream of coolant coming from the bleed valves.

5. Close the bleed valves.

i. Continue to fill the radiator up to the ’. Rinse or wipe the spilled coolant from

base of the filler neck.

the engine and compartment.

I. Start the engine and allow it to run in idle for approximately four minutes. By this time, the coolant level inside the radiator will be lower. Add more of the proper mix through the filler neck until the level reaches the bdse of the filler neck.

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Problems on the Road

9. Shut the engine off and replace the pressure cap. Be sure the arrows on the cap line up like this.

0. Then fill the coolant recovery tank to

the proper level.

;or a complete drain, flush and refill, see ‘our Pontiac dealer or a Pontiac Firebird Iervice Manual. To purchase a service nanual, see “Service Publications’’ in he Index.

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If a Tire Goes Flat

[t’s unusual for a tire to “blow out” while you’re driving, especially if you maintain your tires properly. If air goes out of a ;ire, it’s much more likely to leak out jlowly. But if you should ever have a ‘blowout,” here are a few tips about what :o expect and what to do: [fa front tire fails, the flat tire will create 3 drag that pulls the vehicle toward that side. Take your foot off the accelerator pedal and grip the steering wheel firmly. Steer to maintain lane position, then gently brake to a stop well out of the traffic lane. A rear blowout, particularly on a curve, acts much like a slud and may require the same correction you’d use in a skid. In any rear blowout, remove your foot from the accelerator pedal. Get the vehicle under control by steering the way you want the vehicle to go. It may be very bumpy and noisy, but you can still steer. Gently brake to a stop, well off the road if possible. [f a tire goes flat, the next section shows how to use your jacking equipment to change a flat tire safely.

Changing a FIat Tire If a tire goes flat, avoid further tire and wheel damage by driving s’lowly to a level place. Turn on your hazard warning flashers.

The following steps will tell you how to use the jack and change a tire. The equipment you’ll need is in the rear area. First you must remove the clcse-out panel. See “Close-Out Panel” in the Index. On convertible models, you must also remove the trunk access panel. It’s at the upper back of the trunk. Turn the two screw knobs under the trunk edge a quarter turn counterclockwise to remove lhe panel. Find the plastic screw heads in the trim ?anel over the spare tire. Use a coin or a tey to turn the screw heads until the slots mint front and back. Lift the trim panel md move it out of the way.

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Problems on the Road If you have speakers in the trim panel, you will have to disconnect the speaker wire before completely removing the trim panel.

:o remove the jack and wheel wrench, Dosen and remove the bolt and remove he plastic cover.

Remove the wing nut and adapter and pull out the spare.

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Start with thejack (A) and wheel wrench (B).

The jack has a bolt at the end. Attach the wheel wrench to the jack bolt. Turn the wheel wrench to the right to raise the lift head a little.

If your wheel has a bolt-on center cap, loosen the plastic caps using the wheel wrench.

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Problems on the Road

:hen pry off the center cap with the vheel wrench.

Using the wheel wrench, loosen all the wheel nuts. Don’t remove them yet.

[f your vehicle has optional alloy wheels, :ach wheel may have one locknut in place If the standard wheel nut. A special wheel lock key (removal tool) and .nstructions are located in the center :onsole. Attach the wheel lock key to the socket of the wheel wrench. Remove the locking wheel nut by turning :ounterclockwise.

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Stay away from the moldings or fender flanges to avoid damaging them.

'osition the jack under the vehicle. There ; a notch in the vehicle's rocker flange n the coupe model. Raise the jack head ntil it fits firmly into the notch nearest le flat tire. In convertible models, place the jack in similar location.

Raising your vehicle with the jack improperly positioned will damage the vehicle or may allow the-vehicle to fall off the jack. Be sure to:' fit the jack lift head into the proper location before raising your vehicle.

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Problems on the Road

taise the vehicle by rotating the wheel wench clockwise. Raise the vehicle far mough off the ground so there is enough 'oom for the spare tire to fit.

temove all the wheel nuts and take off he flat tire.

. .I76

Remove: any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. Place the spare on the wheel mounting surface.

Replace the wheel nuts with the rounded Replace the wheel nuts with the rounded end of the nuts toward the wheel. Tighten end of the nuts toward the wheel. Tighten each nut by hand until the wheel is held each nut by hand until the wheel is held against the hub. against the hub.

,ewer the vehicle by rotating the wheel vrench counterclockwise. Lower t&e jack ompletely.

-4'

-I

L:

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Problems on the Road

righten the wheel nuts firmly in a :riss-cross sequence as shown.

m’t try to put a center cap on your mpact spare tire. It won’t fit. Store the nter cap in the rear area until you have : flat tire repaired or replaced.

NOTICE: Center caps won’t fit on your compact spare. If you try to put a center cap on your compact spare, you could damage the cover or the spare.

. .I78

Replace the jack, wheel wrench and flat tire using the storage instructions. When you replace the trim panel, be sure to tuck it under the weatherstrip. 1. Trim Panel 2. Bolt 3. Cover 4. Jack 5. Wing Nut 6. Adapter 7. Compact Spare Tire 8. Full-Size Tire 9. Carpet Flap 10. Tire Storage Bolt 11. Trunk Access Panel (Convertible Only)

12. Knob

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1

NOTICE: Tire chains won’t fit your compact spare. Using them will damage your vehicle and destroy the chains too. Don’t use tire chains on your compact spare.

H Z f You’re Stuck: Zn Sand, Mud, Zce or Snow

What you don’t want to do when your vehicle is stuck is to spin your wheels. The method known as “rocking” can hell you get out when you’re stuck, but you must use caution.

Problems on the Road

NOTICE: If the compact spare is used as a rear tire, do not drive faster than 50 mph (80 km/h). Damage to the rear axle may occur if the compact spare is driven faster than 50 mph (80 km/h). This speed limitation does not apply when the compact spare is used as a front tire.

NOTICE: Don’t take your compact spare through an automatic car wash with guide rails. The compact spare can get caught on the rails. That can damage the tire and wheel, and maybe other parts of your vehicle.

Don’t use your compact spare on some other vehicle. And don’t mix your compact spare or wheel with other wheels or tires. They won’t fit. Keep your spare and its wheel together.

Compact Spare Tire Although the compact spare was fully inflated when your vehicle was new, it can lose air after a time. Check the inflation pressure regularly. It should be 60 psi (420 kPa). After installing the compact spare on your vehicle, you should stop as soon as possible and make sure your spare tire is correctly inflated. The compact spare is made to perform well at posted speed limits for distances up to 3,000 miles (5 000 km), so you can finish your trip and have your full-size tire repaired or replaced where you want. Of course, it’s best to replace your spare with a full-size tire as soon as you can. Your spare will last longer and be in good shape in case you need it again.

. . . I 8 0

NOTICE: Spinning your wheels can destroy parts of your vehicle as well as the tires. If you spin the wheels too fast while shifting your transmission back and forth, you can destroy your trans- mission.

Rocking your vehicle to get it out: First, turn your steering wheel left and right. That will clear the area around your front wheels. If your vehicle has traction control, you should turn the system off. (See “Traction Control System” in the Index.) Then shift back and forth’ between “ R ’ (Reverse) and a forward gear (or with a manual transmission, between First or Second gear and Reverse), spinning the wheels as little as possible. Release the accelerator pedal while you shift, and press lightly on the accelerator pedal when the transmission is in gear. If that doesn’t get you out after a few tries, you may need to be towed out. If you:do need to be towed out, see “Towing Yow .’ Vehicle” in the Index.

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Notes

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I

H e r e you will find information about the care of your Pontiac . This part begins with service and fuel information. and then it shows how to check important fluid and lubricant levels . There is also technical information about your vehicle. and a section devoted to its appearance care .

Part b Service 8t Appearance Care Service ......................................................... 184 Fuel ........................................................... 185 Checking Things under the Hood .................................... 188 HoodRelease .................................................. 188 Engineoil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 Aircleaner .................................................... 195 Automatic Transmission Fluid ..................................... 198 Manual Transmission Fluid ....................................... 200 Hydraulic Clutch ............................................... 201 RearAxle ..................................................... 201 Enginecoolant ................................................. 201 Power Steering fluid ............................................ 204 Windshield Washer Fluid ......................................... 205 Brake Master Cylinder ........................................... 206 Battery ....................................................... 208 Bulb Replacement ................................................ 209 LoadingYourVehicle ............................................. 213 Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Appearance Care ................................................. 221 Appearance Care and Maintenance Materials .......................... 227 Vehicle Identification Number (VIN) ................................. 228 Service Parts Identification Label .................................... 228 Add-on Electrical Equipment ....................................... 228 Fuses and Circuit Breakers ......................................... 228 ReplacementBulbs ............................................... 232 Capacities and Specifications ........................................ 233 183 ...

Service and Appearance Care

Doing Your Own Service Work [f you want to do some of your own service work, you’ll want to get the proper Pontiac Service Manual. It tells you much more about how to service your Pontiac than this manual can. To order the proper service manual, see “Service Publications” in the Index. Your vehicle has an air bag system. Before attempting to do your own service work, see “Servicing Your Air Bag-Equipped Pontiac” in the Index. You should keep a record with all parts receipts and list the mileage and the date of any service work you perform. See “Maintenance Record” in the Index.

Service

Your Pontiac dealer knows your vehicle best and wants you to be happy with it. We hope you’ll go to your dealer for all your service needs. You’ll get genuine GM parts and GM-trained and supported service people. We hope you’ll want to keep your GM vehicle all GM. Genuine GM parts have one of these marks.

. . .184

NOTICE: If you try to do your own service work without knowing enough about it, your vehicle could be damaged.

H Fuel The 8th digit of your Vehicle Identification Number (VIN) shows the code letter for your engine. You will find the VIN at the top left of your instrument panel. (See “Vehicle Identification Number” in the Index.)

3.4L L32 (Code S) Use regular unleaded gasoline rated at 87 octane or higher. It should meet specifications ASTM D4814 in the U.S. and CGSB 3.5-92 in Canada. These fuels should have the proper additives, so you should not have to add anything to: the fuel. In the U.S. and Canada, it’s easy to be sure you get the right kind of giisoline (unleaded). You’ll see “UNLEADED” right on the pump. And only unleaded nozzles will fit into your vehicle’s filler neck. ’ Be sure the posted octane is at least 87. If the octane is less than 87, you may get a heavy knochng noise when you drive. If it’s bad enough, it can damage your 1 engine.

If you’re using fuel rated at 87 octane or higher and you still hear heavy knoclung, your engine needs service. But don’t worry if you hear a little pinging noise when you’re accelerating or driving up a hill. That’s normal, and you don’t have to buy a higher octane fuel to get rid of pinging. It’s the heavy, constant knock that means you have a problem. 5.7L LT1 (Code P) Use premium unleaded gasoline rated at 91 octane or higher. You may use middle grade or regular unleaded gasolines, but your vehicle may not accelerate as well. The gasoline you use should meet specifications ASTM D4814 in the U.S. and CGSB 3.5-92 in Canada. These fuels should have the proper additives, so you should not have to add anything to the fuel. In the U.S. and Canada, it’s easy to be sure you get the right lund of gasoline (unleaded). You’ll see “UNLEADED” right on the pump. And only unleaded nozzles will fit into your vehicle’s filler neck.

Be sure the posted octane for premium is at least 91 (at least 89 for middle grade and 87 for regular). If the octane is less than 87, you may get a heavy knocking noise when you drive. If it’s bad enough, it can damage your engine. If you’re using fuel rated at 91 octane or higher and you still hear heavy knocking, your engine needs service. But don’t worry if you hear a little pinging noise when you’re accelerating or driving up a hill. That’s normal and you don’t have to buy a higher octane fuel to get rid of pinging. It’s the heavy, constant knock that means you have a problem.

All Engines What about gasoline with blending materials that contain oxygen (oxygenates), such as MTBE or alcohol? MTBE is “methyl tertiary-butyl ether.” Fuel that is no more than 15% MTBB is fine for your vehicle. Ethanol is ethyl or grain alcohol. Properly-blended fuel that is no more than 10% ethanol is fine for your vehicle. Methanol is methyl or wood alcohol.

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To check on fuel availability, ask an auto :lub, or contact a major oil company that Joes business in the country where you’ll ,e driving. You can also write us at the following iddress for advice. Just tell us where you’re going and give your Vehicle Identification Number (VIN). General Motors Overseas Distribution

Corporation

North American Export Sales (NAES) 1908 Colonel Sam Drive Oshawa, Ontario LlH 8P7 Canada

Service and Appearance Care

n addition, some gasoline suppliers are low producing reformulated gasolines. rhese gasolines are specially designed to .educe vehicle emissions. General Motors -ecommends that you use reformulated ;asoline. By doing so, you can help clean :he air, especially in those parts of the :ountry that have high ozone levels. You should ask your service station 3perators if their gasolines contain deposit :ontrol additives and oxygenates, and if :hey have been reformulated to reduce vehicle emissions.

Fuels in Foreign Countries [f you plan on driving in another country outside the U.S. or Canada, unleaded fuel may be hard to find. Do not use leaded gasoline, If you use even one tankful, your emission controls won’t work well or at all. With continuous use, spark plugs can get fouled, the exhaust system can corrode, and your engine oil can deteriorate quickly. Your vehicle’s oxygen sensor will be damaged. All of that means costly repairs that wouldn’t be covered by your warranty.

NOTICE: Fuel that is more than 5% methanol is bad for your vehicle. Don’t use it. It can corrode metal parts in your fuel system and also damage plastic and rubber parts. That damage wouldn’t be covered under your warranty. And even at 5% or less, there must be “cosolvents” and corrosion prevent- ers in this fuel to help avoid these problems.

Gasolines for Cleaner Air Your use of gasoline with deposit control additives will help prevent deposits from forming in your engine and fuel system. That helps keep your engine in tune and your emission control system working properly. It’s good for your vehicle, and you’ll be doing your part for cleaner air. Many gasalines are now blended with oxygenates. General Motors recommend: that you use gasolines with these blendin, materials, such as MTBE and ethanol. BJ doing so, you can help clean the air, especially in those parts of the country that have high carbon monoxide levels. . . . I 8 6

To take off the cap, turn it slowly to the left (counterclockwise).

NOTICE: If you need a new cap, be sure to get the right type. Your dealer can get one for you. If you get the wrong type, it may not fit and your fuel tank and emissions system might be dam- aged.

Filling Your Tank

Be careful not to spill gasoline. Clean gasoline from painted surfaces as soon as possible. See “Cleaning the Outside of Your Pontiac” in the Index. When you put the cap back on, turn it to the right until you hear at least three :licks.

The cap is behind a hinged door on the left side of your vehicle.

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Service and Appearance Care

r-

Checking Things under the Hood Hood Release To open the hood, first pull the handle nside the vehicle.

men go to the front of the vehicle and pull up on the hood release. Lift the hood.

, . . I 8 8

When you open the hood you'll see. 1. Battery 2. Engine Coolant Reservoir 3. Engine Oil Dipstick 4. Automatic Transmission Dipstick

(if equipped)

5. Air Cleaner

3.4L L32 (Code !

6. Oil Fill Cap 7. Brake Fluid Reservoir 8. Power Steering Reservoir 9. Windshield Washer Reservoir 10. Engine Fan 11. Clutch Fluid Reservoir (if equipped)

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Service and Appearance Care

Before closing the hood, be sure all the filler caps are on. Then just pull the hood down and close it firmly.

5.7L LTl (Code

6. Oil Fill Cap 7. Brake Fluid Reservoir 8. Power Steering Reservoir 9. Windshield Washer Reservoir IO. Engine Fans 11. Clutch Fluid Reservoir (if equippec

When you open the hood you'll see: 1. Battery 2. Engine Coolant Reservoir 3. Engine Oil Dipstick 4. Automatic Transmission Dipstick

(if equipped)

5. Air Cleaner

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OIL

Engine Oii If the “LOW OIL” light on the instrumenl panel comes on, it means you need to check your engine oil level right away. For more information, see “Low Oil Light” in the Index. You should check your engine oil level regularly; this is an added reminder.

3.4L L32 (Code S) 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.

5.7L LTl (Code P) Turn off the engine and give the oil a few ninutes to drain back into the oil pan. If ’ou don’t, the oil dipstick might not show he actual level.

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Service and Appearance Care

To Check Engine Oil (3.4L L32 (Code S) Engine) 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, and check the level.

To Check Engine Oil (5.7L LT1 (Code P) Engine) Pull out the dipstick slightly. Pinch the end of the dipstick tube as you remove the dipstick to wipe the oil from it. Then push it all the way back in. Now remove it without pinching the tube, keeping the tip lower.

3.4L L32 (Code S )

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.

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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 cross-hatched area that shows the proper operating range, your engine could be dam- aged.

5.7L LTl (Code P)

lust 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: 3eginning midyear 1993, oils of the roper quality for your vehicle will be dentified with this new “starburst” ‘ymbol. The “starburst” symbol indicates hat the oil has been certified by the imerican Petroleum Institute (API), and s preferred for use in your gasoline mgine. r‘ou should look for this on the front of he oil container, and use only oils that lisplay this new symbol. You should also use the proper viscosity i l for your vehicle, as shown in the following chart.

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Service and Appearance Care

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

SAE 5W-30 PREFERRED

COLD WEATHER IF NllTHER SAE SW-30 NOR SAE 1OW-30 GRADE OILS ARE AVAILABLE, SAE 30 GRADE MAY BE USED AT TEMPERATURES ABOVE 40 DEGREES F (4 DEGREES C). Dd NO? USE SAE 1OW-40, SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED.

. . .194

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 (-18°C) or above. These numbers on an oii container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 1OW-40 or SAE 20W-50. 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:

SH or SG “SH” or “SG” must be on the oil container, eithet 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. SAE 5W-30 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. Engine Oil Additives: Don’t add anything to your oil. Your Pontiac dealer is ready to advise if you think something should be added.

What to Do with Used Oil: Did you know that used engine oil :ontains elements that may be unhealthy :or your skin and could even cause :ancer? Don’t let used oil stay on your ;kin for very long. Clean your skin and lails with soap and water, or a good hand :leaner. Wash or properly throw away :lothing or rags containing used engine i l . (See the manufacturer’s warnings ibout the use and disposal of oil xoducts.) Used oil can be a real threat to the mvironment. If you change your own oil, )e sure to drain all free-flowing oil from :he filter before disposal. Don’t ever jispose of oil by putting it in the trash, 2ouring 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.

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.

If any one of these is true for your vehicle, then you need to change your and filter every 3,000 miles (5 000 km) or 3 months - whichever comes first. 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.

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 (-18°C) or colder. If your vehicle has this option, see “Engine Coolant Heater” in the Index.

3.4L L32 (Code S

Air Cleaner iefer to the Maintenance Schedule to letermine when to replace the air filter. See “Scheduled Maintenance Services” In the Index.

195 ...

Service and Appearance Care

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.

5.7L LT1 (Code E

Air Filter Replacement To remove the air filter: 1. Remove the plastic pin by pulling it

straight up.

. . .I96

2. Disconnect the plastic clamp on the

duct. Pull apart the connection.

3. Pull the air cleaner straight up.

Unclamp the metal clips.

4. Open the air cleaner and remove the

filter.

197..

Service and Appearance Care 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 Pontiac 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.

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. In heavy traffic - especially in hot weather. 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 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 “D’ (Third Gear) until the engine temperature gage moves and then remains steady for ten minutes. Then follow the hot check procedures.

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.

. . . I 9 8

To check 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 (lO°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. To check the fluid hot or cold:

Park your vehicle on a level place. 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.

3.4L L32 (Code S)

1.7L LTI (Code P)

Then, without shutting off the engine, follow these steps: 1. 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 i-ead the lower level. The fluid level must be in the “COLD” area for a colc 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.

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.

199 ...

Service and Appearance Care 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. Dama e caused by fluid other than DEXRON -111 or DEXRON@-IIE is not covered by your new vehicle warranty. 0 After adding fluid, recheck the fluid

NOTICE: Too much or too little fluid can damage your transmission. Too rriuch 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.

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.

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.

level as described under “How to Check.” When the correct fluid level is obtained, push the dipstick back in all the way.

Manual Transmission Fluid How to Check: Because this operation can be difficult, you may choose to have this done at a Pontiac dealership Service Department. If you do it yourself, be sure to follow all the instructions here, or you could get a false reading. . . .200

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.

Hydraulic Clutch The hydraulic clutch in your vehicle is self-adjusting. The clutch master cylinder reservoir is filled with hydraulic clutch fluid. It isn’t a good idea to “top off’ your clutch fluid. Adding fluid won’t correct a leak. A fluid loss in this system could indicate a problem. Have the system inspected and repaired.

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 is below the “STEP’ mark on the reservoir. See the instructions on the reservoir cap. 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 “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 Standard Differential Use Axle Lubricant (GM Part No. 1052271) or SAE 80W-90 GL-5 gear lubricant. Limited-Slip Differential To add lubricant when the.leve1 is low, use Axle Lubricant (GM Part No. 105227 1) or SAE 8OW-90 GL-5 gear lubricant. To completely refill after draining, add 4 ounces ( 1 18 ml) of Limited-Slip Differential Lubricant Additive (GM Part No. 1052358). Then fill to the bottom of the filler plug hole with Axle Lubricant (GM Part No. 12345977) or SAE 8OW-90 GL-5 gear lubricant. 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 or if you need to add coolant to your radiator, see “Engine Overheating” in the Index.

201 . . .

Service and Appearanc’e Care The proper coolant for your Pontiac will:

Give freezing protection down to -34°F (-37°C). Give boiling protection up to 262°F (128°C) . Protect against rust and corrosion. Help keep the proper engine temperature. Let the warning lights work as they should.

What to Use: Use a mixture of one-half clean water (preferably distilled) and one-half antifreeze that meets “GM Specification 1825M,” which won’t damage aluminum parts. You can also use a recycled coolant conforming to GM Specification 1825M with a complete coolant flush and refill. If you use this mixture, you don’t need to add anything else.

. . .202

Adding Coolant To Check Coolant: When your engine is cold, check the dipstick on the cap of the coolant recovery tank. The coolant level should be “COLD,” or a little higher. When your engine is warm, the level on the dipstick should be up to “HOT,” or a little higher.

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 war- ranty. Too much water in the mix can freeze and crack the engine, radiator, heater core and other parts.

LOW COOLANT

f you have the 5.7L LTl (Code P) engine nd this light comes on, it means you’re 3w on engine coolant.

ro Add Coolant to the Recovery Tank: f you need more coolant, add the proper nix at the coolant recovery tank, but only vhen your engine is cool. If the tank is ‘ery low or empty, also add coolant to the adiator, see “Engine Overheating” in the ndex for information.

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

203. . .

Service and Appearance Care Radiator Pressure Cap (All Engines)

NOTICE: Your radiator cap is a 18 psi (124 kPa) pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage from over- heating. Be sure the arrows on the cap line up with the overflow tube on the radiator filler neck.

When you replace your radiator pressure cap, an AC@ cap is recommended.

Power Sfeering Fiuid

3.4L L32 (Code S )

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.

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.

. . .204

5.7L LT1 (Code P) When the engine compartment is hot, the level should be at the “H” or “HOT” mark. When the engine compartment is cool, the level should be at the “C” or “FULL COLD” mark.

i

Windshield Washer Fluid To Add: Open the cap labeled “WASHER FLUID ONLY.” Add washer fluid until the bottle is full.

hat to Add: :fer to the Maintenance Schedule to termine what kind of fluid to use. See !ecommended Fluids and Lubricants” ir : Index.

R€ de “€4 thc

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.

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 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.

205. . .

Service and Appearance Care

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.

To Check Brake Fluid: You can check the brake fluid without takmg off the cap. Just look at the brake fluid reservoir. The fluid level should be above the plastic seam in the reservoir. 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 plastic seam, near the base of the filler neck.

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

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.

. . .206

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

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: 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’ll 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 Unless you have the four-wheel disc brake option, your Pontiac has front disc brakes and rear drum brakes.

I NOTICE: I 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. If you have rear drum brakes, they 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 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.

207. . .

Service and Appearance Care Brake Adjustment Every time you make a moderate brake stop, your disc brakes adjust for wear. If you rarely make a moderate or heavier stop, then your brakes might not adjust correctly. If you drive in that way, then - very carefully - make a few moderate brake stops about every 1,000 miles (1 600 km), so your brakes will adjust properly. 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.

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 Pontiac 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.

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 Pontiac 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 . . .208

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

Bulb Replacement

For the proper type of replacement bulb, see “Replacement Bulbs” in the Index.

Halogen Bulbs

Headlights To replace a headlight: 1.

Open the headlight door by hand. See “Headlight Doors” in the Index. Unscrew the bezel with a screwdriver and remove it.

2.

. ..

1. Remove the screws and pull out the

bulb housing.

209. . .

Service and Appearance Care

4. Pull out the bulb and disconnect the

electrical connector.

5. Reverse the steps with a new bulb.

Center High-Mounted Stoplight To replace the bulb: 1. Remove the two screws in the

stoplight lens.

2. Gently pull the assembly out and

remove the bulb from the back of the assembly.

3. Reverse the steps with a new bulb.

. . .210

Front Turn Signal 1. Using a screwdriver, remove the plastic screws from the deflector under the vehicle. Move the deflector out of the way.

2. Turn and pull out the socket and the

bulb.

3. Pull out the bulb. 4. Reverse the steps with a new bulb.

Rear Lights To change any rear bulb, you have to remove the entire housing. 1. Remove the trim panel Trom the side

that you are replacing the bulb.

2. Pull the carpet back.

211

I . .

Service and Appearance Care

3. Remove the wing nuts.

8. Pull off the assembly from the outside. 5. To remove a socket with a tab,

press the tab and turn the socket counterclockwise. To remove a socket without a tab, turn the socket counterclockwise.

6. To remove the bulb, push in and turn it counterclockwise, then pull it out.

7. Reverse the steps with a new bulb.

Lear Sidemarker '0 replace a rear sidemarker bulb: . Remove the screw from the sidemarker assembly.

!. To pull out the bulb housing, tilt the housing to remove the tabbed end.

. . ,212

r

~~

~~

~~~

INFORMATION

TIRE-LOADING WT.

VEHICLE OCCUPANTS CAP. RR.

FRT. CRT. MAX. LOADING @ GVWR SAME AS VEHICLE

LBS TOTAL

1199

TIRE SIZE

INFORMATION

KG 544

MFD BY GENERAL MOTORS CORP.

DATE GVWR 01/91 5713LB

2503LB

GAWRFRT GAWRRR

In l-

In Y)

1. Turn counterclockwise and pull out

the socket and the bulb.

I. Pull out the bulb. i. Reverse the steps with a new bulb.

I Loading Your Vehicle wo labels on your vehicle show how luch weight it may properly carry. The ire-Loading Information label found on le driver’s door tells you the proper size, Jeed rating and recommended inflation ressures for the tires on your vehicle. It so gives you important information )out the number of people that can be in 3ur vehicle and the total weight that you in carry. This weight is called the ehicle Capacity Weight and includes the eight of all occupants, cargo, and all onfactory-installed options.

he other label is the Certification label, Iund on the rear edge of the driver’s oor. It tells you the gross weight apacity of your vehicle, called the WWR (Gross Vehicle Weight Rating). he GVWR includes the weight of the shicle, all occupants, fuel and cargo. ’ever exceed the GVWR for your zhicle, or the Gross Axle Weight Rating 3AWR) for either the front or rear axle. .nd, if you do have a heavy load, you lould spread it out. Don’t carry more Ian 100 pounds (45 kg) in your rear area

213.

Service and Appearance Care NOTICE: Your warranty does not cover parts or components that fail because of over- loading.

If you put things inside your vehicle - like suitcases, tools, packages, or anything else - they will 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.

. . .214

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 Pontiac. If your spare tire is a different brand than your road tires, you will have a tire warranty folder from each of these manufacturers.

215.

Service and Appearance Care

[dation - Tire Pressure The Tire-Loading Information label which is on 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 a mile. If your vehicle is equipped with P245/50ZR16 tires and you’ll be driving at speeds higher than 100 mph (160 km/h) where it is legal, raise the “cold” inflation pressure of each tire to 35 psi (240 P a ) . When you end this very high speed driving, reduce the “cold” inflation pressures to those listed on the Tire Loading Information label.

NOTICE:

Don’t let anyone tell you that underinflation overinflation If your tires don’t have enough air (underinflation) you can get:

is all right. It’s not.

Too much flexing

0 Too much heat a Tire overloading 0 Bad wear

Bad handling

0 Bad fuel economy.

If your tires have too much air (overinflation), you can get: 0 Unusual wear Bad handling

0 Rough ride 0 Needless damage from road hazards.

.’. . 216

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. 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.

ll

r J t \/t I A I

MI

Tire Inspection 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. If you don’t have P245/50ZR16 size tires: ’ use the rotation pattern shown above for your size tires.

4-

4-

-I-

- a 4

I1 F you have P245/50ZR16 size tires, they lust roll in a certain direction for the besl II vera11 performance. The direction is hown by an arrow on both sidewalls. SI lecause these tires are directional, they hould be rotated as shown in the SI e: xample above. These tires should only e moved from front to rear and rear to fl -ont on the same side of the vehicle. Lfter the tires have been rotated, adjust tl le front and rear inflation pressure as Sown on the Tire-Loading Information SI 12 lbel. Make certain that all wheel nuts are roperly tightened. See “Wheel Nut P: T orque” in the Index.

217.

Service and Appearance Care

The tire has a puncture, cut, or other damage that can’t be repaired well because of the size or location of the damage.

Buying New Tires To find out what kind and size of tires you need, look at the Tire-Loading [nformation 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.

When It’s Time for New Tires h e way to tell when it’s time for new ires is to check the treadwear indicators, vhich will appear when your tires have Inly 2/32 inch (1.6 mm) or less of tread emaining. r‘ou need a new tire if: D You can see the indicators at three or

more places around the tire.

B You can see cord or fabric showing

through the tire’s rubber.

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

D The tire has a bump, bulge or split.

. . . Z I U

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. 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, B, C The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its 3bility to dissipate heat when tested under :ontrolled conditions on a specified

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.

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. Those 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.

219 ...

Service and Appearance Care 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.

[f you need to replace any of your wheels, wheel bolts, or wheel nuts, replace them mly with new GM original equipment