2011 Chevrolet Impala Owners Manual

What to Do with Used Oil Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer. Do not 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 dispose of 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 threat to the environment. If you change your own oil, be sure to drain all the oil from the filter before disposal. Never dispose of oil by putting it in the trash or pouring it on the ground, into sewers, or into streams or bodies of water. Recycle it by taking it to a place that collects used oil.

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10-12

Vehicle Care

See Engine Oil Messages on page 5‑33. Change the oil as soon as possible within the next 1 000 km (600 mi). It is possible that, if driving under the best conditions, the oil life system might indicate that an oil change is not necessary for up to a year. The engine oil and filter must be changed at least once a year and, at this time, the system must be reset. Your dealer has trained service people who will perform this work and reset the system. It is also important to check the oil regularly over the course of an oil drain interval and keep it at the proper level. If the system is ever reset accidentally, the oil must be changed at 5 000 km (3,000 mi) since the last oil change. Remember to reset the oil life system whenever the oil is changed.

How to Reset the Engine Oil Life System Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. Always reset the engine oil life to 100% after every oil change. It will not reset itself. To reset the system: 1. Display OIL LIFE REMAINING

on the DIC.

2. Press and hold the SET/RESET button on the DIC for more than five seconds. The oil life will change to 100%.

If the CHANGE ENGINE OIL SOON message comes back on when the vehicle is started, the engine oil life system has not reset. Repeat the procedure.

Automatic Transmission Fluid

When to Check and Change Automatic Transmission Fluid A good time to check the automatic transmission fluid level is when the engine oil is changed. Change the fluid and filter at the intervals listed in Scheduled Maintenance on page 11‑2, and be sure to use the transmission fluid listed in Recommended Fluids and Lubricants on page 11‑6.

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How to Check Automatic Transmission Fluid Because this operation can be a little difficult, it may be decided to have this done at the dealer service department. If not taken to the dealer, be sure to follow all the instructions here, or a false reading on the dipstick could result. Notice: Too much or too little fluid can damage the transmission. Too much can mean that some of the fluid could come out and fall on hot engine parts or exhaust system parts, starting a fire. Too little fluid could cause the transmission to overheat. Be sure to get an accurate reading if checking the transmission fluid.

Wait at least 30 minutes before checking the transmission fluid level if you have been driving: . When outside temperatures are

above 32°C (90°F).

. 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 82°C to 93°C (180°F to 200°F). Get the vehicle warmed up by driving about 24 km (15 mi) when outside temperatures are above 10°C (50°F). If it is colder than 10°C (50°F), the vehicle may have to be driven longer.

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10-13

Checking the Fluid Level Prepare your vehicle as follows: 1. Park the vehicle on a level

place. Keep the engine running. 2. With the parking brake applied, place the shift lever in P (Park).

3. 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).

4. Let the engine run at idle for

three to five minutes.

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10-14

Vehicle Care

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.

The transmission fluid dipstick handle is the black loop with this symbol on it. It is located near the rear of the engine compartment. See Engine Compartment Overview on page 10‑6 for more information on location.

3. Check both sides of the dipstick,

and read the lower level. The fluid level must be in the cross-hatched area. If the fluid level is in the acceptable range, push the dipstick back in all the way.

4.

How to Add Fluid Refer to Recommended Fluids and Lubricants on page 11‑6 to determine what kind of transmission fluid to use. If the fluid level is low, add only enough of the proper fluid to bring the level into the cross-hatched area on the dipstick. 1. Pull out the dipstick. 2. Using a long-neck funnel, add

enough fluid at the dipstick hole to bring it to the proper level. It does not take much fluid, generally less than 0.5 L (1 pt). Do not overfill.

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Notice: Use of the incorrect automatic transmission fluid may damage the vehicle, and the damages may not be covered by the vehicle warranty. Always use the automatic transmission fluid listed in Recommended Fluids and Lubricants on page 11‑6. 3. After adding fluid, recheck the fluid level as described under “How to Check Automatic Transmission Fluid,” earlier in this section.

4. When the correct fluid level is

obtained, push the dipstick back in all the way.

Engine Air Cleaner/Filter The engine air cleaner/filter is located in the engine compartment on the driver side of the vehicle. See Engine Compartment Overview on page 10‑6 for more information on location.

When to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter at the scheduled maintenance intervals and replace it at the first oil change after each (80 000 km (50,000 mi) interval. See Scheduled Maintenance on page 11‑2 for more information. If driving in dusty/dirty conditions, inspect the filter at each engine oil change. How to Inspect the Engine Air Cleaner/Filter To inspect the air cleaner/filter, remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains covered with dirt, a new filter is required.

Vehicle Care

10-15

To inspect or replace the engine air cleaner/filter do the following:

1. Lift the filter cover tabs on top of the engine air cleaner/filter housing.

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Vehicle Care

{ WARNING

Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air; it helps to stop flames if the engine backfires. Use caution when working on the engine and do not drive with the air cleaner/filter off.

Notice: If the air cleaner/filter is off, dirt can easily get into the engine, which could damage it. Always have the air cleaner/filter in place when you are driving.

Cooling System The cooling system allows the engine to maintain the correct working temperature.

3.5 L V6 Engine Shown, 3.9 L V6 Engine Similar

A. Coolant Recovery Tank B. Pressure Cap C. Electric Engine Cooling Fan

(Out of View)

2. Push the filter cover housing

toward the engine.

3. Pull out the filter. 4.

Inspect or replace the engine air cleaner/filter.

5. To reinstall the cover, position the tabs through the hinges on the housing.

6. Push the cover tabs on top of

the housing to lock the cover in place.

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Vehicle Care

10-17

Engine Coolant The cooling system in the vehicle is filled with DEX-COOL® engine coolant. This coolant is designed to remain in the vehicle for 5 years or 240 000 km (150,000 mi), whichever occurs first. The following explains the cooling system and how to check and add coolant when it is low. If there is a problem with engine overheating, see Engine Overheating on page 10‑21.

{ WARNING

An electric engine cooling fan under the hood can start up even when the engine is not running and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.

{ WARNING

Heater and radiator hoses, and other engine parts, can be very hot. Do not touch them. If you do, you can be burned.

(Continued)

WARNING (Continued)

Do not run the engine if there is a leak. If you run the engine, it could lose all coolant. That could cause an engine fire, and you could be burned. Get any leak fixed before you drive the vehicle.

Notice: Using coolant other than DEX-COOL® can cause premature engine, heater core, or radiator corrosion. In addition, the engine coolant could require changing sooner, at 50 000 km (30,000 mi) or 24 months, whichever occurs first. Any repairs would not be covered by the vehicle warranty. Always use DEX-COOL (silicate-free) coolant in the vehicle.

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Vehicle Care

What to Use

{ WARNING

Adding only plain water or some other liquid to the cooling system can be dangerous. Plain water and other liquids, can boil before the proper coolant mixture will. The coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, the engine could get too hot but you would not get the overheat warning. The engine could catch fire and you or others could be burned. Use a 50/50 mixture of clean, drinkable water and DEX-COOL coolant.

Notice: If extra inhibitors and/or additives are used in the vehicle cooling system, the vehicle could be damaged. Use only the proper mixture of the engine coolant listed in this manual for the cooling system. See Recommended Fluids and Lubricants on page 11‑6 for more information. Never dispose of engine coolant by putting it in the trash, pouring it on the ground, or into sewers, streams, or bodies of water. Have the coolant changed by an authorized service center, familiar with legal requirements regarding used coolant disposal. This will help protect the environment and your health.

Use a 50/50 mixture of clean, drinkable water and DEX-COOL coolant. If using this mixture, nothing else needs to be added. This mixture: . Gives freezing protection down

to −37°C (−47°F), outside temperature.

. Gives boiling protection up

to 129°C (265°F), engine temperature.

. Protects against rust and

corrosion.

. Will not damage aluminum parts. . Helps keep the proper engine

temperature.

Notice: If an improper coolant mixture is used, the engine could overheat and be badly damaged. The repair cost would not be covered by the vehicle warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core, and other parts.

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Checking Coolant The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant recovery tank. If the coolant inside the coolant recovery tank is boiling, do not do anything else until it cools down. If coolant is visible but the coolant level is not at or above the COLD FILL line, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant recovery tank, but be sure the cooling system is cool before this is done. The coolant recovery tank is located in the rear of the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview on page 10‑6.

When the engine is cold, the coolant level should be at or above the COLD FILL line on the coolant recovery tank. To check the coolant level, look for the COLD FILL line on the side of the coolant recovery tank that faces the engine. If the level is not correct, there may be a leak in the cooling system. How to Add Coolant to the Recovery Tank

{ WARNING

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

Vehicle Care

10-19

Notice: This vehicle has a specific coolant fill procedure. Failure to follow this procedure could cause the engine to overheat and be severely damaged. If coolant is needed, add the proper DEX-COOL coolant mixture at the coolant recovery tank. When the coolant level in the coolant recovery tank is at the COLD FILL line, start the vehicle. If the overheat warning continues, there is one more thing you can try. The proper coolant mixture can be added directly to the cooling system through the coolant fill neck on the engine, but be sure the system is cool before doing it.

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Vehicle Care

How to Add Coolant to the Radiator

{ WARNING

An electric engine cooling fan under the hood can start up even when the engine is not running and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.

{ WARNING Steam and scalding liquids from a hot cooling system can blow out and burn you badly.

(Continued)

WARNING (Continued)

They are under pressure, and if you turn the surge tank pressure cap — even a little — they can come out at high speed. Never turn the cap when the cooling system, including the surge tank pressure cap, is hot. Wait for the cooling system and surge tank pressure cap to cool if you ever have to turn the pressure cap.

If coolant is needed, add the proper mixture directly to the radiator, but be sure the cooling system is cool before this is done.

1. Remove the pressure cap when

the cooling system, including the pressure cap and upper radiator hose is no longer hot. Turn the pressure cap slowly counterclockwise. If a hiss is heard, wait for that to stop. A hiss means that there is still some pressure left.

2. Keep turning the pressure cap

and remove it.

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Install the coolant recovery tank cap and the pressure cap. After a day or two of driving, when the engine is cold, check the coolant level in the recovery tank. If it is low, refill it to the COLD FILL line.

If the coolant in the recovery tank is constantly low, have a dealer service department inspect the vehicle for leaks. Notice: If the pressure cap is not tightly installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured.

3. Fill the cooling system with

5.

the proper DEX-COOL coolant mixture, up to the base of the filler neck. See “What to use” for more information about the proper coolant mixture. Rinse or wipe any spilled coolant from the engine and the compartment.

4. Then fill the coolant recovery

tank to the COLD FILL line.

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10-21

Engine Overheating The vehicle has several indicators to warn of engine overheating. There is a coolant temperature gauge and a warning light on the instrument panel that indicate an overheated engine condition. See Engine Coolant Temperature Gauge on page 5‑13 and Engine Coolant Temperature Warning Light on page 5‑23. In addition, there is an ENGINE OVERHEATED IDLE ENGINE and an ENGINE OVERHEATED STOP ENGINE message displayed on the vehicle Driver Information Center (DIC). See Engine Cooling System Messages on page 5‑32
for more information.

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Vehicle Care

If it is decided not to lift the hood when this warning appears, but instead get service help right away, see Roadside Assistance Program on page 13‑6. If it is decided to lift the hood, make sure the vehicle is parked on a level surface. Then check to see if the engine cooling fans are running. If the engine is overheating, both fans should be running. If they are not, do not continue to run the engine and have the vehicle serviced.

Notice: Engine damage from running the engine without coolant is not covered by the warranty. Notice: If the engine catches fire while driving with no coolant, the vehicle can be badly damaged. The costly repairs would not be covered by the vehicle warranty. See Overheated Engine Protection Operating Mode on page 10‑24 for information on driving to a safe place in an emergency.

If Steam is Coming from the Engine Compartment { WARNING

Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Turn it off and get everyone away from the vehicle until it cools down. Wait until there is no sign of steam or coolant before you open the hood.

(Continued)

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WARNING (Continued)

If you keep driving when the vehicles engine is overheated, the liquids in it can catch fire. You or others could be badly burned. Stop the engine if it overheats, and get out of the vehicle until the engine is cool. See Overheated Engine Protection Operating Mode on page 10‑24 for information on driving to a safe place in an emergency.

If No Steam is Coming from the Engine Compartment If an engine overheat warning is displayed but no steam can be seen or heard, the problem may not be too serious. Sometimes the engine can get a little too hot when the vehicle: . Climbs a long hill on a hot day . Stops after high-speed driving Idles for long periods in traffic Tows a trailer

Vehicle Care

10-23

If the overheat warning is displayed with no sign of steam: 1. Turn the air off. 2. Turn the heater on to the highest

3.

temperature and to the highest fan speed. Open the windows as necessary. In heavy traffic, let the engine idle in N (Neutral) while stopped. If it is safe to do so, pull off the road, shift to P (Park) or N (Neutral) and let the engine idle.

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Vehicle Care

If the temperature overheat gauge is no longer in the overheat zone or an overheat warning no longer displays, the vehicle can be driven. Continue to drive the vehicle slowly for about 10 minutes. Keep a safe vehicle distance from the vehicle in front. If the warning does not come back on, continue to drive normally. If the warning continues, pull over, stop, and park the vehicle right away. If there is no sign of steam, idle the engine for three minutes while parked. If the warning is still displayed, turn off the engine until it cools down. Also, see "Overheated Engine Protection Operating Mode" in this section.

Overheated Engine Protection Operating Mode This emergency operating mode allows the vehicle to be driven to a safe place in an emergency situation. If an overheated engine condition exists, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage. In this mode, a significant loss in power and engine performance will be noticed. The coolant temperature gauge will indicate an overheat condition exists. Driving extended km (mi) and/or towing a trailer in the overheat protection mode should be avoided.

Notice: After driving in the overheated engine protection operating mode, to avoid engine damage, allow the engine to cool before attempting any repair. The engine oil will be severely degraded. Repair the cause of coolant loss, change the oil and reset the oil life system. See Engine Oil on page 10‑7.

Power Steering Fluid

The power steering fluid reservoir is located toward the rear of the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview on page 10‑6 for reservoir location.

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When to Check Power Steering Fluid It is not necessary to regularly check power steering fluid unless there is a leak suspected in the system or an unusual noise is heard. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. How to Check Power Steering Fluid To check the power steering fluid, do the following: 1. Turn the key off and let the

engine compartment cool down. 2. Wipe the cap and the top of the

reservoir clean.

3. Unscrew the cap and wipe the

dipstick with a clean rag.

4. Replace the cap and completely

tighten it.

5. Remove the cap again and look at the fluid level on the dipstick.

The fluid level should be somewhere within the cross‐hatched area on the dipstick. If the fluid is at the ADD mark, fluid should be added. What to Use To determine what kind of fluid to use, see Recommended Fluids and Lubricants on page 11‑6. Always use the proper fluid. Notice: Use of the incorrect fluid may damage the vehicle and the damages may not be covered by the vehicle's warranty. Always use the correct fluid listed in Recommended Fluids and Lubricants on page 11‑6.

Vehicle Care

10-25

Washer Fluid

What to Use When the vehicle needs windshield washer fluid, be sure to read the manufacturer's instructions before use. If operating the vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing. Adding Washer Fluid A WASHER FLUID LOW ADD FLUID message will be displayed on the Driver Information Center (DIC) when windshield washer fluid needs to be added to the vehicle. See Washer Fluid Messages on page 5‑38 for more information.

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Vehicle Care

Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 10‑6 for more information on location. Notice:

. When using concentrated

washer fluid, follow the manufacturer's instructions for adding water.

. Do not mix water with

ready-to-use washer fluid. Water can cause the solution to freeze and damage the washer fluid tank and other parts of the washer system. Also, water does not clean as well as washer fluid.

. Fill the washer fluid tank

only three-quarters full when it is very cold. This allows for fluid expansion if freezing occurs, which could damage the tank if it is completely full.

. Do not use engine coolant

(antifreeze) in the windshield washer. It can damage the windshield washer system and paint.

Brakes This vehicle has disc 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 can come and go or be heard all the time the vehicle is moving, except when applying the brake pedal firmly.

{ WARNING

The brake wear warning sound means that soon the brakes will not work well. That could lead to a crash. When the brake wear warning sound is heard, have the vehicle serviced.

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

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Some driving conditions or climates can cause a brake squeal when the brakes are first applied or lightly applied. This does not mean something is wrong with the brakes. Properly torqued wheel nuts are necessary to help prevent brake pulsation. When tires are rotated, inspect brake pads for wear and evenly tighten wheel nuts in the proper sequence to torque specifications in Capacities and Specifications on page 12‑2. 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 that brake service might be required.

Brake Adjustment Every time the brakes are applied, with or without the vehicle moving, the brakes adjust for wear. Replacing Brake System Parts The braking system on a 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. The vehicle was designed and tested with top-quality brake parts. When parts of the braking system are replaced, be sure to get new, approved replacement parts. If this is not done, the brakes might not work properly. For example, installing disc brake pads that are wrong for the vehicle, can change the balance between the front and rear brakes — for the worse. The braking performance expected can change in many other ways if the wrong replacement brake parts are installed.

Vehicle Care

10-27

Brake Fluid

The brake master cylinder reservoir is filled with DOT 3 brake fluid as indicated on the reservoir cap. See Engine Compartment Overview on page 10‑6 for the location of the reservoir. There are only two reasons why the brake fluid level in the reservoir might go down:

The brake fluid level goes down because of normal brake lining wear. When new linings are installed, the fluid level goes back up.

. A fluid leak in the brake

hydraulic system can also cause a low fluid level. Have the brake hydraulic system fixed, since a leak means that sooner or later the brakes will not work well.

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Vehicle Care

Do not top off the brake fluid. Adding fluid does not correct a leak. If fluid is added when the linings are worn, there will be too much fluid when new brake linings are installed. Add or remove brake fluid, as necessary, only when work is done on the brake hydraulic system.

{ WARNING

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

When the brake fluid falls to a low level, the brake warning light comes on. See Brake System Warning Light on page 5‑20.

What to Add Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 11‑6. Always clean the brake fluid reservoir cap and the area around the cap before removing it. This helps keep dirt from entering the reservoir.

{ WARNING

With the wrong kind of fluid in the brake hydraulic system, the brakes might not work well. This could cause a crash. Always use the proper brake fluid.

Notice:

. Using the wrong fluid

can badly damage brake hydraulic system parts. For example, just a few drops of mineral-based oil, such as engine oil, in the brake hydraulic system can damage brake hydraulic system parts so badly that they will have to be replaced. Do not let someone put in the wrong kind of fluid.

. If brake fluid is spilled on the

vehicle's painted surfaces, the paint finish can be damaged. Be careful not to spill brake fluid on the vehicle. If you do, wash it off immediately.

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Battery Refer to the replacement number shown on the original battery label when a new battery is needed. See Engine Compartment Overview on page 10‑6 for battery location.

{ DANGER

Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.

Vehicle Storage

{ WARNING

Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 10‑75 for tips on working around a battery without getting hurt.

Infrequent Usage: Remove the black, negative (−) cable from the battery to keep the battery from running down. Extended Storage: Remove the black, negative (−) cable from the battery or use a battery trickle charger.

Vehicle Care

10-29

Starter Switch Check

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

1. Before starting this check, be

sure there is enough room around the vehicle.

2. Firmly apply both the parking brake and the regular brake. See Parking Brake on page 9‑29. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts.

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

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Vehicle Care

Automatic Transmission Shift Lock Control Function Check

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

1. Before starting this check,

be sure there is enough room around the vehicle. It should be parked on a level surface.

2. Firmly apply the parking

brake. See Parking Brake on page 9‑29. Be ready to apply the regular brake immediately if the vehicle begins to move.

3. With the engine off, turn the

ignition on, but do not start the engine. Without applying the regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer for service.

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

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

Contact your dealer if service is required.

Park Brake and P (Park) Mechanism Check { WARNING

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

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Vehicle Care

10-31

Wiper Blade Replacement Windshield wiper blades should be inspected for wear or cracking. See Scheduled Maintenance on page 11‑2 for more information on wiper blade inspection. Replacement blades come in different types and are removed in different ways. Here's how to remove the wiper blade: 1. Pull the windshield wiper arm

connector away from the windshield.

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

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

Contact your dealer if service is required.

2. While holding the wiper arm, pull the clip up from the blade connecting point, and pull the blade assembly down toward the windshield to remove it from the wiper arm. Install the new wiper blade onto the wiper arm and snap the clip down into place.

3.

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Vehicle Care

To remove and replace the wiper blade element do the following: 1. The wiper blade element has two notches at one end which are engaged by the bottom claw set of the wiper blade. At the notched end of the wiper blade, pull the wiper blade element from the wiper blade assembly. 2. To replace the element, start at the heel end of the wiper blade, which is the end nearest to the base of the wiper arm, and slide the wiper blade element, notched end last, into the wiper blade claw sets.

3. To engage the last claw into the notched end of the wiper blade element, squeeze the wiper blade element at the notched area, and push the wiper blade element so the claw fits into the notch.

4. Be sure the two wiper blade

element notches are engaged by the last claw set, and that all the other claws are properly engaged in the slots of the wiper blade element on both sides.

Headlamp Aiming Headlamp aim has been preset at the factory and should need no further adjustment. However, if the vehicle is damaged in a crash, the headlamp aim may be affected. Aim adjustment to the low-beam headlamps may be necessary if oncoming drivers flash their high-beam headlamps at you (for vertical aim). If the headlamps need to be re-aimed, it is recommended that the vehicle be taken to the dealer for service.

Incorrect Installation

A. Correct Installation B. For the proper type and size of windshield wiper blades, see Maintenance Replacement Parts on page 11‑8.

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Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑37. For any bulb‐changing procedure not listed in this section, contact your dealer.

Halogen Bulbs

{ WARNING

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

Vehicle Care

10-33

Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps

To replace one of these bulbs: 1. Open the hood. See Hood on

page 10‑5.

A. Sidemarker B. Low-Beam Headlamp C. High-Beam Headlamp D. Parking/Turn Signal Lamp

2. Remove the screw from the

headlamp assembly.

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Vehicle Care

6. Turn the old bulb

counterclockwise and remove it from the retaining ring by pulling it away from the headlamp.

8.

7. Remove the electrical connector from the bulb by raising the lock tab and pulling the connector away from the bulb's base. Install the electrical connector to the bulb. Install the new bulb by inserting the smallest tab on the bulb base into the matching notch in the retaining ring. Turn the bulb a quarter-turn clockwise until it stops.

9.

10. Reinstall the dust caps.

3. Pull up on the plastic headlamp

retainer and remove it.

4. Pull the headlamp assembly

away from the vehicle and remove the electrical connector. 5. Remove the round dust caps to

gain access to the bulbs.

11. Push the headlamp assembly

toward the vehicle.

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12. Push down on the plastic

13. Reinstall the screw from the

headlamp retainer to reinstall it.

headlamp assembly.

Vehicle Care

10-35

Taillamps, Turn Signal, Sidemarker, Stoplamps, and Back-Up Lamps

A. Rear Sidemarker Lamp B. Back-up Lamp C. Stoplamp/Taillamp/Turn Signal

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Vehicle Care

To replace one of these bulbs: 1. Open the trunk. See Trunk on

page 2‑10.

2. Remove the convenience net (if equipped). Unhook the net from the upper wing nut.

5. Turn the two hex nuts

counterclockwise to remove them.

6. Pull out the taillamp assembly

and disconnect the wiring harness.

7. Turn the bulb socket

counterclockwise to remove it. 8. Pull the old bulb straight out to

3. Turn the upper wing nut

counterclockwise and remove it.

4. Pull the carpet away from the

remove it.

rear of the vehicle.

9. Push the new bulb straight in

until it clicks to install it.

10. Reverse steps 1 through 7 to

reinstall.

License Plate Lamp To replace one of these bulbs: 1. Turn the lamp assembly

counterclockwise and pull the lamp assembly out of the connector.

2. Pull the old bulb from the lamp

assembly, keeping the bulb straight as you pull it out. Install the new bulb.

3. 4. Reverse Steps 1 through 3 to

reinstall the license plate lamp.

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Replacement Bulbs

Electrical System

Electrical System Overload The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems.

Exterior Lamp

Back-Up Front Parking/ Turn Signal License Plate Lamp Headlamps

High-Beam Low-Beam

Sidemarker Stoplamp, Taillamp, and Turn Signal

Bulb

Number 921LL

3157NAK

194LL

H9
H11
194LL

3057

For replacement bulbs not listed here, contact your dealer.

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10-37

Fuses and circuit breakers protect the following in the vehicle: . Headlamp Wiring . Windshield Wiper Motor . Power Windows and Other

Power Accessories

Replace a bad fuse with a new one of the identical size and rating. If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible.

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Vehicle Care

Headlamp Wiring An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off. Windshield Wipers If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart. Although the circuit is protected from electrical overload, overload due to heavy snow or ice 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 an electrical problem and not snow or ice, be sure to get it fixed.

Fuses and Circuit Breakers The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of fires caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating.

Engine Compartment Fuse Block The Engine Compartment Fuse Block is in the engine compartment. See Engine Compartment Overview on page 10‑6 for more information on location. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

The vehicle may not have all of the fuses, relays, and features shown.

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Fuses

Usage

Fuses

Usage

Fuses

Usage

Vehicle Care

10-39

A/C CMPRSR Air Conditioning

ABS MTR 1

ABS MTR 2
AIR PUMP

AIR SOL

AIRBAG/ DISPLAY AUX PWR BATT 1
BATT 2
BATT 3
BATT 4

BCM

Compressor Antilock Brake System (ABS) Motor 1
ABS Motor 2
Air Pump Air Injection Reactor Solenoid

Auxiliary Power Battery 1
Battery 2
Battery 3
Battery 4
Body Control Module (BCM)

CHMSL/ BCK‐UP

DISPLAY

DRL 1

DRL 2

ECM/TCM

Center High‐Mounted Stoplamp, Back‐up Lamp Display Daytime Running Lamps 1
Daytime Running Lamps 2
Engine Control Module (ECM), Ignition ECM, Transmission Control Module (TCM)

EMISSIONS 1 Emissions 1
EMISSIONS 2 Emissions 2

ETC/ECM

FAN 1
FAN 2

FOG LAMPS

FUEL/PUMP

HDLP MDL

HORN HTD MIR INJ 1
INJ 2
INT LIGHTS

Electronic Throttle Control, ECM Cooling Fan 1
Cooling Fan 2
Fog Lamps (If Equipped) Fuel Pump Headlamp Module Horn Heated Mirror Injector 1
Injector 2
Interior Lamps

Airbag, Display

ECM IGN

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Vehicle Care

Fuses

Usage

Fuses

Usage

Relay

Usage

Air Conditioning Compressor Cooling Fan 1
Cooling Fan 2
Cooling Fan 3

A/C CMPRSR FAN 1
FAN 2
FAN 3
FUEL/PUMP Fuel Pump PWR/TRN Powertrain REAR DEFOG STRTR

Rear Defogger

Starter

INT LTS/ PNL DIM

LT HI BEAM

LT LO BEAM

LT PARK

LT SPOT

LT T/SIG

ONSTAR PWR DROP/ CRANK RADIO

RT HI BEAM

Interior Lamps, Instrument Panel Dimmer Driver Side High‐Beam Headlamp Driver Side Low‐Beam Headlamp Driver Side Parking Lamp Left Spot Driver Side Turn Signal Lamp OnStar® Power Drop, Crank Audio System Passenger Side High‐Beam Headlamp

RT LO BEAM

RT PARK

RT SPOT

RT T/SIG

RVC SEN

STRG WHL STRTR TRANS WPR WSW

Passenger Side Low‐Beam Headlamp Passenger Side Parking Lamp Right Spot Passenger Side Turn Signal Lamp Regulated Voltage Control Sensor Steering Wheel Starter Transmission Wiper Windshield Wiper

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Instrument Panel Fuse Block

The vehicle may not be equipped with all of the fuses, relays, and features shown.

The fuse block is on the passenger side of the vehicle in the carpet molding. Remove the fuse block door to access the fuses.

Vehicle Care

10-41

Fuses

Usage

AIRBAG AMP AUX CNSTR DR/LCK HTD/SEAT PWR/MIR PWR/SEAT PWR/WNDW Power Window

Airbags Amplifier Auxiliary Outlets Canister Door Locks Heated Seats Power Mirrors Power Seats

RAP

S/ROOF TRUNK TRUNK XM

Retained Accessory Power Sunroof Trunk Trunk Relay XM™ Radio

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Vehicle Care

Wheels and Tires

Tires Every new GM vehicle has high-quality tires made by a leading tire manufacturer. See the warranty manual for information regarding the tire warranty and where to get service. For additional information refer to the tire manufacturer.

{ WARNING . Poorly maintained and

improperly used tires are dangerous.

. Overloading the tires can

cause overheating as a result of too much flexing. There could be a blowout and a serious crash. See Vehicle Load Limits on page 9‑12.

(Continued)

WARNING (Continued)

WARNING (Continued)

. Underinflated tires pose the same danger as overloaded tires. The resulting crash could cause serious injury. Check all tires frequently to maintain the recommended pressure. Tire pressure should be checked when the tires are cold.

. Overinflated tires are more likely to be cut, punctured, or broken by a sudden impact — such as when hitting a pothole. Keep tires at the recommended pressure.

. Worn or old tires can cause a crash. If the tread is badly worn, replace them.

(Continued)

. Replace any tires that have been damaged by impacts with potholes, curbs, etc. . Improperly repaired tires

can cause a crash. Only the dealer or an authorized tire service center should repair, replace, dismount, and mount the tires.

. Do not spin the tires in

excess of 55 km/h (35 mph) on slippery surfaces such as snow, mud, ice, etc. Excessive spinning may cause the tires to explode.

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Tire Sidewall Labeling Useful information about a tire is molded into its sidewall. The examples below show a typical passenger vehicle tire and a compact spare tire sidewall.

Passenger (P‐Metric) Tire Example (A) Tire Size: The tire size is a combination of letters and numbers used to define a particular tire's width, height, aspect ratio, construction type,

and service description. See the “Tire Size” illustration later in this section for more detail. (B) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. GM's TPC specifications meet or exceed all federal safety guidelines. (C) DOT (Department of Transportation): The Department of Transportation (DOT) code indicates that the tire is in compliance with the U.S. Department of Transportation Motor Vehicle Safety Standards.

Vehicle Care

10-43

(D) Tire Identification Number (TIN): The letters and numbers following the DOT (Department of Transportation) code are the Tire Identification Number (TIN). The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture. (E) Tire Ply Material: The type of cord and number of plies in the sidewall and under the tread. (F) Uniform Tire Quality Grading (UTQG): Tire manufacturers are required to grade tires based on three performance factors: treadwear, traction, and temperature resistance. For more information see Uniform Tire Quality Grading on page 10‑61.

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Vehicle Care

(G) Maximum Cold Inflation Load Limit: Maximum load that can be carried and the maximum pressure needed to support that load.

Compact Spare Tire Example

(A) Tire Ply Material: The type of cord and number of plies in the sidewall and under the tread.

(B) Temporary Use Only: The compact spare tire or temporary use tire has a tread life of approximately 5 000 km (3,000 mi) and should not be driven at speeds over 105 km/h (65 mph). The compact spare tire is for emergency use when a regular road tire has lost air and gone flat. If the vehicle has a compact spare tire, see Compact Spare Tire on page 10‑74 and If a Tire Goes Flat on page 10‑65. (C) Tire Identification Number (TIN): The letters and numbers following the DOT (Department of Transportation) code is the Tire Identification Number (TIN).

The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture. (D) Maximum Cold Inflation Load Limit: Maximum load that can be carried and the maximum pressure needed to support that load. (E) Tire Inflation: The temporary use tire or compact spare tire should be inflated to 420 kPa (60 psi). For more information on tire pressure and inflation see Tire Pressure on page 10‑49.

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(F) Tire Size: A combination of letters and numbers define a tire's width, height, aspect ratio, construction type, and service description. The letter T as the first character in the tire size means the tire is for temporary use only. (G) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. GM's TPC specifications meet or exceed all federal safety guidelines.

Tire Designations

Tire Size The following is an example of a typical passenger vehicle tire size.

(A) Passenger (P‐Metric) Tire: The United States version of a metric tire sizing system. The letter P as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. Tire and Rim Association.

Vehicle Care

10-45

(B) Tire Width: The three‐digit number indicates the tire section width in millimeters from sidewall to sidewall. (C) Aspect Ratio: A two‐digit number that indicates the tire height‐to‐width measurements. For example, if the tire size aspect ratio is 60, as shown in item C of the illustration, it would mean that the tire's sidewall is 60 percent as high as it is wide. (D) Construction Code: A letter code is used to indicate the type of ply construction in the tire. The letter R means radial ply construction; the letter D means diagonal or bias ply construction; and the letter B means belted‐bias ply construction.

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Vehicle Care

(E) Rim Diameter: Diameter of the wheel in inches. (F) Service Description: These characters represent the load index and speed rating of the tire. The load index represents the load carrying capacity a tire is certified to carry. The speed rating is the maximum speed a tire is certified to carry a load.

Tire Terminology and Definitions Air Pressure: The amount of air inside the tire pressing outward on each square inch of the tire. Air pressure is expressed in psi (pounds per square inch) or kPa (kilopascal).

Accessory Weight: The combined weight of optional accessories. Some examples of optional accessories are, automatic transmission, power steering, power brakes, power windows, power seats, and air conditioning. Aspect Ratio: The relationship of a tire's height to its width. Belt: A rubber coated layer of cords that is located between the plies and the tread. Cords may be made from steel or other reinforcing materials. Bead: The tire bead contains steel wires wrapped by steel cords that hold the tire onto the rim.

Bias Ply Tire: A pneumatic tire in which the plies are laid at alternate angles less than 90 degrees to the centerline of the tread. Cold Tire Pressure: The amount of air pressure in a tire, measured in kPa (kilopascal) or psi (pounds per square inch) before a tire has built up heat from driving. See Tire Pressure on page 10‑49. Curb Weight: The weight of a motor vehicle with standard and optional equipment including the maximum capacity of fuel, oil, and coolant, but without passengers and cargo.

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DOT Markings: A code molded into the sidewall of a tire signifying that the tire is in compliance with the U.S. Department of Transportation (DOT) Motor Vehicle Safety Standards. The DOT code includes the Tire Identification Number (TIN), an alphanumeric designator which can also identify the tire manufacturer, production plant, brand, and date of production. GVWR: Gross Vehicle Weight Rating. See Vehicle Load Limits on page 9‑12. GAWR FRT: Gross Axle Weight Rating for the front axle. See Vehicle Load Limits on page 9‑12. GAWR RR: Gross Axle Weight Rating for the rear axle. See Vehicle Load Limits on page 9‑12.

Intended Outboard Sidewall: The side of an asymmetrical tire, that must always face outward when mounted on a vehicle. Kilopascal (kPa): The metric unit for air pressure. Light Truck (LT‐Metric) Tire: A tire used on light duty trucks and some multipurpose passenger vehicles. Load Index: An assigned number ranging from 1 to 279
that corresponds to the load carrying capacity of a tire. Maximum Inflation Pressure: The maximum air pressure to which a cold tire can be inflated. The maximum air pressure is molded onto the sidewall. Maximum Load Rating: The load rating for a tire at the maximum permissible inflation pressure for that tire.

Vehicle Care

10-47

Maximum Loaded Vehicle Weight: The sum of curb weight, accessory weight, vehicle capacity weight, and production options weight. Normal Occupant Weight: The number of occupants a vehicle is designed to seat multiplied by 68 kg (150 lbs). See Vehicle Load Limits on page 9‑12. Occupant Distribution: