2013 Buick Lacrosse Owners Manual

that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is indicated can vary considerably. For the oil life system to work properly, the system must be reset every time the oil is changed. When the system has calculated that oil life has been diminished, it indicates that an oil change is necessary. A CHANGE ENGINE OIL SOON message comes on. See Engine Oil Messages on page 5‑35. 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

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Vehicle Care

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. To reset the system: 1. Turn the ignition to ON/RUN with

the engine off.

2. Press the DIC MENU button on the turn signal lever to enter the Vehicle Information Menu. Use the thumbwheel to scroll through the menu items until you reach REMAINING OIL LIFE.

3. Press the SET/CLR button to

reset the oil life at 100%.

4. Turn the ignition to LOCK/OFF. The system is reset when the CHANGE ENGINE OIL SOON message is off and the REMAINING OIL LIFE 100% message is displayed. If the CHANGE ENGINE OIL SOON message comes back on when the vehicle is started, the engine oil life system has not been reset. Repeat the procedure.

Automatic Transmission Fluid

How to Check Automatic Transmission Fluid It is not necessary to check the transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to your dealer service department and have it repaired as soon as possible. There is a special procedure for checking and changing the transmission fluid. Because this procedure is difficult, you should have this done at your dealer service department. Contact your dealer for additional information or the procedure can be found in the service manual. To purchase a service manual, see Service Publications Ordering Information on page 13‑16. Change the fluid and filter at the intervals listed in Maintenance Schedule on page 11‑2, and be sure

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to use the fluid listed in Recommended Fluids and Lubricants on page 11‑12.

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 Maintenance Schedule on page 11‑2 for more information. If you are 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.

2.4L L4 Engine

1. Screws 2. Air Duct Clamp 3. Electrical Connector

Vehicle Care

10-15

To inspect or replace the engine air cleaner/filter: 1. Open the hood. See Hood on

page 10‑4.

2. Disconnect the outlet duct by

loosening the air duct clamp (2).

3. Disconnect the electrical

connector (3).

4. Remove the screws (1) on top of

the engine air cleaner/filter housing.

5. Lift the filter cover housing away from the engine air cleaner/filter housing.

6. Pull out the filter. 7.

Inspect or replace the engine air cleaner/filter.

8. Reverse Steps 2–4 to reinstall

the filter cover housing.

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Vehicle Care

4. Remove the screws (3) on top of

the engine air cleaner/filter housing.

5. Lift the filter cover housing away from the engine air cleaner/filter housing.

6. Pull out the filter. 7.

Inspect or replace the engine air cleaner/filter.

8. Reverse Steps 2–4 to reinstall

the filter cover housing.

3.6L V6 Engine FWD

1. Electrical Connector

2. Air Duct Clamp 3. Screws 4. Secondary Air Hose To inspect or replace the engine air cleaner/filter: 1. Open the hood. See Hood on

page 10‑4.

2. Disconnect the outlet duct by

loosening the air duct clamp (2).

3. Disconnect the electrical

connector (1).

4. Remove the screws (3) on top of

the engine air cleaner/filter housing.

5. Disconnect the secondary air

hose (4).

6. Lift the filter cover housing away from the engine air cleaner/filter housing.

7. Pull out the filter. 8.

Inspect or replace the engine air cleaner/filter.

3.6L V6 Engine AWD

1. Electrical Connector 2. Air Duct Clamp 3. Screws To inspect or replace the engine air cleaner/filter: 1. Open the hood. See Hood on

page 10‑4.

2. Disconnect the outlet duct by

loosening the air duct clamp (2).

3. Disconnect the electrical

connector (1).

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9. Reverse Steps 2–5 to reinstall

the filter cover housing. { 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.

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10-17

3.6L V6 Engine AWD

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

2.4L L4 Engine

1. Engine Cooling Fans (Out

of View)

2. Coolant Surge Tank and

Pressure Cap

1. Engine Cooling Fans (Out

of View)

2. Coolant Surge Tank and

Pressure Cap

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Vehicle Care

3.6L V6 Engine FWD

1. Engine Cooling Fans (Out

of View)

2. Coolant Surge Tank and

Pressure Cap

{ 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. 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. Any repairs would not be covered by the vehicle warranty. Always use DEX-COOL (silicate-free) coolant in the vehicle.

Engine Coolant The cooling system in the vehicle is filled with DEX-COOL® engine coolant mixture. See Recommended Fluids and Lubricants on page 11‑12
and Maintenance Schedule on page 11‑2. 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. 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

(Continued)

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WARNING (CONTINUED)

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 for non-eAssist engine(s). Use a 50/ 50 mixture of deionized water and DEX-COOL coolant for eAssist engine(s).

Use a 50/50 mixture of deionized water or 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 (−34°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 improper coolant mixture, inhibitors, or additives are used in the vehicle’s cooling system, the engine could overheat and be damaged. Too much deionized water or clean drinkable water can freeze and crack engine cooling parts. The repairs would not be covered by the warranty. Use only the proper mixture of engine coolant for the cooling system. See Recommended Fluids and Lubricants on page 11‑12. 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

Vehicle Care

10-19

coolant disposal. This will help protect the environment and your health. 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 surge tank. If the coolant inside the coolant surge 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 mark pointed to, add a 50/50 mixture of deionized water or clean drinkable water and DEX-COOL coolant. Be sure the cooling system is cool before this is done.

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Vehicle Care

If no coolant is visible in the coolant surge tank, add coolant as follows: How to Add Coolant to the Coolant Surge 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.

Notice: This vehicle has a specific coolant fill procedure. Failure to follow this procedure could cause the engine to overheat and be severely damaged.

{ WARNING

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

1. Turn the pressure cap slowly counterclockwise. If a hiss is heard, wait for that to stop. A hiss means there is still some pressure left.

2. Keep turning the cap and

remove it.

The coolant surge tank pressure cap can be removed when the cooling system, including the surge tank pressure cap and upper radiator hose, is no longer hot.

3. Fill the coolant surge tank with the proper mixture to the mark pointed to on the front of the coolant surge tank.

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4. With the coolant surge tank cap off, start the engine and let it run until the upper radiator hose starts getting hot. Watch out for the engine cooling fans. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower, add more of the proper mixture to the coolant surge tank until the level reaches the mark pointed to on the front of the coolant surge tank.

5. Replace the cap tightly. 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.

Engine Overheating

2.4L L4 Engine There is a engine coolant temperature warning light on the instrument panel cluster that indicates an overheated engine

condition. See Engine Coolant Temperature Warning Light on page 5‑22 for more information.

3.6L V6 Engine There is a coolant temperature gauge and a engine coolant temperature warning light on the instrument panel cluster that indicate an overheated engine condition. See Engine Coolant Temperature Gauge on page 5‑13
and Engine Coolant Temperature Warning Light on page 5‑22 for more information. If the decision is made not to lift the hood when this warning appears, get service help right away. See Roadside Assistance Program (U.S. and Canada) on page 13‑7 or Roadside Assistance Program (Mexico) on page 13‑9. If the decision is made to lift the hood, make sure the vehicle is parked on a level surface.

Vehicle Care

10-21

Then check to see if the engine cooling fans are running. If the engine is overheating, the fans should be running. If 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. If Steam Is Coming from the Engine Compartment See Overheated Engine Protection Operating Mode on page 10‑22 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 might not be too serious. Sometimes the engine can get a little too hot when the vehicle: . Climbs a long hill on a hot day.

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Vehicle Care

. Stops after high-speed driving. Idles for long periods in traffic. Tows a trailer.

If the overheat warning displays with no sign of steam: 1. Turn the air conditioning 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.

2.4L L4 Engine If the engine coolant temperature warning light 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.

3.6L V6 Engine If the temperature overheat gauge is no longer in the overheat zone or an engine coolant temperature warning light 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 on page 10‑22.

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, there is significant loss in power and engine performance.

2.4L L4 Engine The engine coolant temperature warning light comes on the instrument panel, to indicate the vehicle has entered overheated engine protection operating mode. Driving extended distances and/or towing a trailer in the overheat protection mode should be avoided.

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3.6L V6 Engine The engine coolant temperature warning light comes on the instrument panel, to indicate the vehicle has entered overheated engine protection operating mode. The temperature gauge also indicates an overheat condition exists. Driving extended distances and/or towing a trailer in the overheat protection mode should be avoided.

Power Steering Fluid (2.4L L4 Engine and 3.6L V6 Engine with FWD) The vehicle has electric power steering and does not use power steering fluid.

Power Steering Fluid (3.6L V6 Engine with AWD)

See Engine Compartment Overview on page 10‑6 for information on the location of the power steering fluid reservoir. When to Check Power Steering Fluid It is not necessary to regularly check power steering fluid unless a leak is 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.

Vehicle Care

10-23

How to Check Power Steering Fluid Check the level after the vehicle has been driven for at least 20 minutes so the fluid is warm. To check the power steering fluid: 1. Turn the ignition to LOCK/OFF and let the engine compartment cool down.

2. Wipe the cap and the top of the

reservoir clean.

3. Unscrew the cap and pull it

straight up.

4. Wipe the dipstick with a

clean rag.

5. Replace the cap and completely

tighten it.

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

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Vehicle Care

Washer Fluid

Notice

What to Use When windshield washer fluid is needed, 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

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 reservoir location.

. When using concentrated

washer fluid, follow the manufacturer 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.

. 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.

When the engine is hot, the level should be at the hot MAX level. When the engine is cold, the fluid level should be between MIN and MAX on the dipstick. What to Use To determine what kind of fluid to use, see Recommended Fluids and Lubricants on page 11‑12. Always use the proper fluid.

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Vehicle Care

10-25

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.

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.

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.

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Vehicle Care

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.

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 5‑18.

What to Add Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 11‑12. 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.

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Vehicle Care

10-27

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.

Battery This vehicle has a standard 12-volt battery. Refer to the replacement number on the original battery label when a new standard 12-volt battery is needed. eAssist vehicles also have a high voltage battery. Only a trained service technician with the proper knowledge and tools should inspect, test, or replace the high voltage battery. See your dealer if the high voltage battery needs service. The dealer has information on how to recycle the high voltage battery. There is also information available at http://www.recyclemybattery.com.

The eAssist system high voltage battery is cooled with air drawn from the vehicle interior. The cold air intake for the battery is behind the rear seat, on the filler panel. Do not cover the intake.

{ WARNING

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.

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Vehicle Care

Vehicle Storage

All-Wheel Drive

{ 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-board with eAssist Only) on page 10‑87 or Jump Starting (with or without eAssist) on page 10‑87
for tips on working around a battery without getting hurt.

Infrequent Usage: Remove the 12-volt battery black, negative (−) cable from the battery to keep the battery from running down. Extended Storage: Remove the 12-volt battery black, negative (−) cable from the battery or use a battery trickle charger. Remember to reconnect the battery when ready to drive the vehicle.

Transfer Case Under normal driving conditions, transfer case fluid does not require changing or checking unless there is a fluid leak or unusual noise. If required, have the transfer case serviced by your dealer.

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 9‑32. 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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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 9‑32. 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).

. With the key access ignition

system, the ignition key should come out only in LOCK/OFF. See Ignition Positions (Keyless Access) on page 9‑15 or Ignition Positions (Key Access) on page 9‑17.

Contact your dealer if service is required.

Vehicle Care

10-29

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.

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.

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4. Remove the wiper blade.

Allowing the wiper blade arm to touch the windshield when no wiper blade is installed could damage the windshield. Any damage that occurs would not be covered by the vehicle warranty. Do not allow the wiper blade to touch the windshield.

5. Reverse Steps 1–3 for wiper

blade replacement.

10-30

Vehicle Care

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.

Wiper Blade Replacement Windshield wiper blades should be inspected for wear and cracking. See Maintenance Schedule on page 11‑2 for more information. Replacement blades come in different types and are removed in different ways. For proper type and length, see Maintenance Replacement Parts on page 11‑13. To replace the windshield wiper blade: 1. Pull the windshield wiper assembly away from the windshield.

2. Lift up on the latch in the middle

of the wiper blade where the wiper arm attaches.

3. With the latch open, pull the wiper blade down toward the windshield far enough to release it from the J-hooked end of the wiper arm.

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Headlamp Aiming Headlamp aim has been preset and should need no further adjustment. If the vehicle is damaged in a crash, the headlamp aim may be affected. If adjustment to the headlamps is necessary, see your dealer.

Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑34. 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

10-31

High Intensity Discharge (HID) Lighting

{ WARNING

The low beam high intensity discharge lighting system operates at a very high voltage. If you try to service any of the system components, you could be seriously injured. Have your dealer or a qualified technician service them.

After an HID headlamp bulb has been replaced, the beam might be a slightly different shade than it was originally. This is normal.

LED Lighting This vehicle has several LED lamps. For replacement of any LED lighting assembly, contact your dealer.

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10-32

Vehicle Care

Headlamps, Front Turn Signal and Parking Lamps

Base Headlamp Assembly The base model vehicle has a halogen high-beam headlamp, a low-beam/Daytime Running Lamp (DRL) headlamp, and a turn signal/ parking lamp on the headlamp assembly. For replacement of the turn signal/ parking lamp bulb on an eAssist vehicle, contact your dealer.

6.

7.

8.

Install the new bulb in the socket. Install the bulb socket by turning clockwise one-quarter turn. If a headlamp bulb was replaced, install the dust cover in the back of the headlamp housing by turning clockwise one-quarter turn.

Uplevel Headlamp Assembly The uplevel model vehicle has a high intensity discharge (HID) high/ low beam, a dedicated DRL, and a parking/turn signal lamp on the headlamp assembly. See High Intensity Discharge (HID) Lighting on page 10‑31.

1. Low-Beam Headlamp/DRL 2. High-Beam Headlamp 3. Parking/Turn Signal Lamp To replace one of these bulbs: 1. Open the hood. See Hood on

2.

3.

page 10‑4. If replacing a headlamp bulb, remove the dust cover from the back of the headlamp housing by turning counterclockwise one-quarter turn. If replacing a turn signal/parking lamp bulb on a non-eAssist vehicle, remove the close out panel push pins and close out panel covering the bulb socket.

4. Remove the bulb socket from

the headlamp by turning counterclockwise one-quarter turn.

5. Remove the bulb from the

socket. If replacing the high/ low-beam bulb, pry the two clips on either end of the bulb and pull straight out.

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

1. DRL Lamp 2. Parking/Turn Signal Lamp To replace one of these bulbs: 1. Open the hood. See Hood on

page 10‑4.

2. Turn the bulb socket

counterclockwise to remove it from the headlamp assembly. 3. Pull the bulb straight out from

the socket.

4. Push the new bulb into the

socket and reinstall the socket into the headlamp assembly by turning it clockwise.

1. Back-Up Lamp 2. Turn Signal Lamp To replace one of these lamps: 1. Open the trunk. See Trunk on

page 2‑11.

2. Remove the fasteners and pull

back the trunk trim.

Vehicle Care

10-33

3. Remove the four plastic wing

nuts holding the taillamp assembly in place.

4. Pull out the taillamp assembly

and disconnect the wiring harness.

5. Turn the bulb socket

counterclockwise to remove it. 6. Pull the old bulb straight out of

the bulb socket.

7. Reverse Steps 1–6 to install.

License Plate Lamp The license plate lamps for this vehicle are on the trunk lid. To replace one of these bulbs: 1. Open the trunk. See Trunk on

page 2‑11.

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10-34

Vehicle Care

Replacement Bulbs

Exterior Lamp

Back-Up Lamp

Daytime Running Lamp (Uplevel) Front Turn Signal/ Parking Lamp Headlamp High Beam (Base) Headlamp Low Beam (Base) License Plate Lamp Rear Turn Signal

Bulb

Number 921LL (W16W)

3157K LCP

3757NAK

LCP

H9

H11LL

W5WLL 3757AKT

For replacement bulbs not listed here, contact your dealer.

2. Push the end on either of the lamp assemblies (passenger side shown) and then move the lamp assembly down to remove it from the trunk lid.

3. Turn the bulb socket (1)

counterclockwise to remove it from the lamp assembly (3).

4. Pull the bulb (2) straight out of

the bulb socket.

5. Push the replacement bulb

straight into the bulb socket and turn the bulb socket clockwise to install it into the lamp assembly.

6. Move the lamp assembly into the trunk lid, engaging the clip side first.

7. Push on the lamp side opposite the clip until the lamp assembly snaps into place.

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Electrical System

High Voltage Devices and Wiring

{ WARNING

Exposure to high voltage can cause shock, burns, and even death. The high voltage components in the vehicle can only be serviced by technicians with special training. High voltage components are identified by labels. Do not remove, open, take apart, or modify these components. High voltage cable or wiring has orange covering. Do not probe, tamper with, cut, or modify high voltage cable or wiring.

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. Fuses and circuit breakers protect power devices in the vehicle. 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.

Vehicle Care

10-35

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.

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10-36

Vehicle Care

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 damage caused by electrical problems. To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating. Fuses of the same amperage can be temporarily borrowed from another fuse location, if a fuse goes out. Replace the fuse as soon as possible. To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse Block on page 10‑36 and Instrument Panel Fuse Block on page 10‑40.

Engine Compartment Fuse Block

To remove the fuse block cover, squeeze the three retaining clips on the cover and lift it straight up. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

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Vehicle Care

10-37

J-Case Fuses

Usage

25

26

27

28

41

42
43

44

45
59

Rear Heated Seats Antilock Brake System Pump Electric Park Brake Rear Window Defogger Brake Vacuum Pump Cooling Fan K2
Not Used Transmission Auxiliary Oil Pump (eAssist) Cooling Fan K1
AIR Pump

Mini Fuses

Usage Transmission Control Module — Battery

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

Usage

J-Case Fuses

12

Wiper Starter

J-Case Fuses

Usage

21

22

24

Rear Power Windows Sunroof Front Power Windows

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10-38

Vehicle Care

Mini Fuses

10

Usage Engine Control Module Battery Air Conditioning Compressor Clutch Engine Control Module Run/Crank Ignition Coils — Even (Six Cylinder Engine), Ignition Coils — All (Four Cylinder Engine Ignition Coils — Odd (Six Cylinder Engine) Engine Control Module — Switched Battery (from Engine Control Module Relay)

Mini Fuses

Usage

Mini Fuses

Six Cylinder Engine: Post Catalytic Converter Oxygen Sensor Heater, Mass Air Flow Sensor, Flex Fuel Sensor, Secondary Air Induction Solenoid Run/Crank for Transmission Control Module and Fuel System Control Module/Chassis Control Module (eAssist) Cabin Heater Coolant Pump (eAssist) Motor Generator Unit Coolant Pump (eAssist)

11

13

14

15

16

17

18

20

23

29

30

Usage Run/Crank for eAssist Power Inverter Module Airbag Module — Run/Crank Sunshade Module, Vehicle Air Purification System, Vented Seats Heated Steering Wheel (non eAssist) Variable Effort Steering (if equipped) or eAssist Power Inverter Module Power Lumbar, Left Power Lumbar, Right or Power Pack Cooling Fan (eAssist)

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Mini Fuses

Usage

Mini Fuses

Usage

Mini Fuses

Usage

Vehicle Care

10-39

31

32

33

34

35

36

37
38
46

All Wheel Drive, Electronic Suspension Control Body Control Module 6
Heated Seat — Front Antilock Brake System Valves Amplifier Adaptive Forward Lighting (AFL) Motors — Battery Right High Beam Left High Beam Cooling Fan Relay

Six Cylinder Engine: Pre Catalytic Converter Oxygen Sensor Heater, Canister Purge Solenoid. Four Cylinder Engine: Pre and Post Catalytic Converter Oxygen Sensor Heaters, Canister Purge Solenoid Fog Lamps Right High Intensity Discharge Headlamp Left High Intensity Discharge Headlamp Horn Cluster Run/Crank

47

48

49

50

51
52

Run/Crank for Inside Rearview Mirror, Rear Vision Camera, Air Quality Sensor, Aero Shutter Motor Run/Crank for: Heating, Ventilation and Air Conditioning, Headlamp Switch Outside Rearview Mirror, Universal Garage Door Opener, Front Window Switches Windshield Washer Heated Mirror Canister Vent Adaptive Forward Lighting (AFL) Module — Battery Not Used

53

54

55

56
60
62

64

65

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10-40

Vehicle Care

Mini Fuses

66

67

69

70

71

Mini Relays

13
15
16

Usage AIR Solenoid (eAssist) Fuel System Control Module Regulated Voltage Control Sensor Ultrasonic Parking Assist/Side Blind Zone/Lane Departure Warning/ Rain Sensor Passive Entry/ Passive Start

Usage Engine Control Module Cooling Fan Cooling Fan Run/Crank AIR Pump

Mini Relays

17

Micro Relays

Usage Rear Window Defogger

Usage

10

14

Air Conditioning Compressor Clutch Starter Wiper Speed Wiper Control Cabin Heater Coolant Pump (eAssist) Cooling Fan Headlamp Low Beam

Ultra Micro

Relays

Usage

11

Transmission Auxiliary Oil Pump (eAssist)

Instrument Panel Fuse Block

The instrument panel fuse block is located in the instrument panel, on the driver side of the vehicle. To access the fuses, open the fuse panel door by pulling down at the top. Press in on the sides of the door to release it from the instrument panel.

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Pull the door toward you to release it from the hinge.

Vehicle Care

10-41

Fuses

Usage

11

12

13

14

15

16

17

18

Front Heater Ventilation Air Conditioning/Blower (J-Case Fuse) Passenger Seat (Circuit Breaker) Driver Seat (Circuit Breaker) Diagnostic Link Connector Airbag/Automatic Occupant Sensing Trunk Heater Ventilation Air Conditioning Controller Pre-Fuse for Fuses 4 and 5

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

Fuses

Usage

10

Steering Wheel Controls Backlight Body Control Module 7
Body Control Module 5
Radio OnStar/Universal Handsfree Phone Power Outlet 1
Power Outlet 2
Body Control Module 1
Body Control Module 4
Body Control Module 8
(J-Case Fuse)

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Vehicle Care

Fuses

Usage

Fuses

Usage

26

AC/DC Inverter

Relays

Usage

R1
R2
R3

Trunk Relay Not Used Power Outlet Relay

Infotainment and Center Stack Displays, Head-Up Display, Preferred Device Interface Module, Rear Seat Infotainment (eAssist) Rear Seat Entertainment Display/Rear Seat Audio Instrument Panel Cluster Discrete Logic Ignition Switch Body Control Module 3
Body Control Module 2
Rear Heater Ventilation Air Conditioning/Blower

19

20

21

22

23

24

25

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 9‑10.

(Continued)

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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.

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

(Continued)

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

All-Season Tires This vehicle may come with all-season tires. These tires are designed to provide good overall performance on most road surfaces and weather conditions. Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. Original equipment all-season tires can be

Vehicle Care

10-43

identified by the last two characters of this TPC code, which will be “MS.” Consider installing winter tires on the vehicle if frequent driving on snow or ice-covered roads is expected. All-season tires provide adequate performance for most winter driving conditions, but they may not offer the same level of traction or performance as winter tires on snow or ice-covered roads. See Winter Tires on page 10‑43.

Winter Tires This vehicle was not, originally, equipped with winter tires. Winter tires are designed for increased traction on snow and ice-covered roads. Consider installing winter tires on the vehicle if frequent driving on snow or ice-covered roads is expected. See your dealer for details regarding winter tire availability and proper tire selection. Also, see Buying New Tires on page 10‑58.

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10-44

Vehicle Care

With winter tires, there may be decreased dry road traction, increased road noise, and shorter tread life. After changing to winter tires, be alert for changes in vehicle handling and braking. If using winter tires: . Use tires of the same brand and