2015 Cadillac CTS Owners Manual

the cover.

4. Lift the filter cover housing away

from the engine. 5. Pull out the filter. 6.

Inspect or replace the engine air cleaner/filter.

7. Reverse Steps 1–5 to reinstall

the filter cover housing.

3.6L V6 LFX Engine

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

1. Disconnect the outlet duct by

loosening the air duct clamp (1).

3.6L V6 LF3 Engine

1. Lower Air Duct Clamp 2. Lower Electrical Connector 3. Upper Air Duct Clamp 4. Upper Electrical Connector 5. Screws

1. Disconnect the lower and upper

outlet ducts by loosening the lower (1) and upper (3) air duct clamps.

2. Disconnect the lower (2) and

upper (4) electrical connectors and wiring attachments to cover.

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Vehicle Care

3. Remove the screws (5) on top of

the cover.

4. Lift the filter cover housing away

from the engine. 5. Pull out the filter. 6.

Inspect or replace the engine air cleaner/filter.

7. Reverse Steps 1–5 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.

{ Caution

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.

2.0L L4 LTG Engine

1. Engine Coolant Surge Tank

and Pressure Cap

2. Engine Cooling Fan (Out

of View)

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Vehicle Care

10-17

{ 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.

{ Caution 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

(Continued)

3.6L V6 LFX Engine

3.6L V6 LF3 Engine

1. Engine Coolant Surge Tank

1. Engine Coolant Surge Tank

and Pressure Cap

and Pressure Cap

2. Engine Cooling Fan (Out

2. Engine Cooling Fan (Out

of View)

of View)

{ 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.

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Vehicle Care

Caution (Continued)

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. See Maintenance Schedule on page 11-3 and Recommended Fluids and Lubricants on page 11-13. 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 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.

Use a 50/50 mixture of clean drinkable water and DEX-COOL coolant. 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.

{ Caution

If improper coolant mixture, inhibitors, or additives are used in the vehicle cooling system, the engine could overheat and be damaged. Too much water in the mixture can freeze and crack engine cooling parts. The repairs would not be covered by the vehicle warranty. Use only the proper mixture of engine coolant for the cooling system. See Recommended Fluids and Lubricants on page 11-13.

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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. Checking Coolant The vehicle must be on a level surface when checking the coolant level. It is normal to see coolant moving in the upper coolant hose return line when the engine is running. It is also normal to see bubbles entering the surge tank through the small hose. 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 COLD FILL line, add a 50/50 mixture of clean drinkable water and DEX-COOL coolant. Be sure the cooling system is cool before this is done. If no coolant is visible in the coolant surge tank, add coolant as follows: How to Add Coolant to the Coolant Surge Tank { Caution

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

If no problem is found, check to see if coolant is visible in the coolant surge tank. If coolant is visible but the coolant level is not at the bottom of the fill neck, add a 50/50 mixture of clean, drinkable water and

Vehicle Care

10-19

DEX-COOL coolant at the coolant surge tank, but be sure the cooling system, including the coolant surge tank pressure cap, is cool before you do it.

{ 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.

{ 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 (Continued)

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{ 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.

10-20

Vehicle Care

Warning (Continued)

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.

{ Caution

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

1. Remove the coolant surge tank

pressure cap from the top chamber when the cooling system, including the coolant surge tank pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly counterclockwise. If you hear a hiss, wait for that to stop. This will allow any pressure still left to be vented out the discharge hose.

2. Keep turning the pressure cap slowly and remove it. Open the surge tank service port cap to the lower chamber. The service port is behind the top chamber. 3. Fill the surge tank top chamber

with the proper DEX-COOL coolant mixture to the bottom of the fill neck. The top chamber needs to be completely full. Fill the surge tank bottom chamber through the service port to approximately half.

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4. With the coolant surge tank

pressure cap off and the surge tank service port cap open, start the engine and let it run until you can feel the upper radiator hose getting hot. Watch out for the engine cooling fan(s). By this time, the coolant level inside the coolant surge tank top chamber may be lower. If the level is lower, add more of the proper DEX-COOL coolant mixture to the surge tank top chamber until the level reaches the bottom of the fill neck.

5. Replace the surge tank pressure

cap tightly and close the surge tank service port cap. { Caution

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.

Check the level in the surge tank top and bottom chambers when the cooling system has cooled down. If the coolant is not at the proper levels, repeat Steps 1–3 and reinstall the pressure cap and close the service port. If the coolant still is not at the proper levels when the system cools down again, see your dealer.

Engine Overheating The vehicle has an indicator to warn of the engine overheating. If the decision is made not to lift the hood when this warning appears, get service help right away. See Roadside Service on page 13-5. If the decision is made to lift the hood, make sure the vehicle is parked on a level surface. Then check to see if the engine cooling fan is running. If the engine is overheating, the fan should be running. If it is not, do not continue to run the engine. Have the vehicle serviced.

Vehicle Care

10-21

{ Caution

Running the engine without coolant may cause damage or a fire. Vehicle damage would not be covered by the vehicle warranty.

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. Just 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 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.

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.

If the overheat warning is displayed with no sign of steam: 1. Turn the air conditioning off.

2. Turn the heater on to the highest

temperature and to the highest fan speed. Open the windows as necessary.

3. When it is safe to do so, pull off

the road, shift to P (Park) or N (Neutral) and let the engine idle.

If the 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 and have the cooling system checked for proper fill and function. 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.

Washer Fluid

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 10-5 for reservoir location.

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{ Caution

. Do not use engine coolant

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

. 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.

. When using concentrated

washer fluid, follow the manufacturer instructions for adding water.

. 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.

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 when 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.

{ Caution

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

Vehicle Care

10-23

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. See Capacities and Specifications on page 12-2. Brake pads should be replaced as complete 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

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.

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 10-5 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 5-22.

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What to Add Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 11-13. 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.

Caution (Continued)

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.

{ Caution

. Using the wrong fluid can

badly damage brake hydraulic system parts. For

(Continued)

Battery The battery is in the trunk, behind the trim panel, on the driver side of the vehicle. Refer to the replacement number shown on the original battery label when a new battery is needed.

Vehicle Care

10-25

{ 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.

After a power loss, such as disconnecting the battery or removing the maxi fuses in the power distribution fuse block, the following steps must be performed to calibrate the electronic throttle control. If this is not done, the engine will not run properly. 1. Turn the ignition on but do not

start the engine.

2. Leave the ignition on for at least

three minutes so that the electronic throttle control will cycle and relearn its home position.

3. Turn the ignition off.

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Vehicle Care

4. Start and run the engine for at

least 30 seconds.

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 10-64 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.

How to Check Lubricant

All-Wheel Drive If the vehicle is equipped with All-Wheel-Drive (AWD), this is an additional system that needs lubrication. Transfer Case

When to Check Lubricant It is not necessary to regularly check the transfer case fluid unless a leak is suspected or an unusual noise is heard. A fluid loss could indicate a problem. Have it inspected and repaired.

1. Fill Plug

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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 Electric Parking Brake on page 9-28. 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.

2. Drain Plug

To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the fill plug hole, on the transfer case, some lubricant will need to be added. Add enough lubricant to raise the level to the bottom of the fill plug hole. Use care not to overtighten the fill plug.

What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See Recommended Fluids and Lubricants on page 11-13.

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.

Vehicle Care

10-27

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 Electric Parking Brake on page 9-28. 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

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Vehicle Care

shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer for service.

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. 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. Replacement blades come in different types and are removed in different ways. For proper type and length, see Maintenance Replacement Parts on page 11-14.

{ Caution

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

To replace the windshield wiper blade: 1. Pull the windshield wiper assembly away from the windshield. The passenger side wiper arm has limited travel.

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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 10-31. 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.

2. Press the button in the middle of

the wiper arm connector, and pull the wiper blade away from the arm connector.

3. Remove the wiper blade. 4. Reverse Steps 1–3 for wiper

blade replacement.

Windshield Replacement The windshield is part of the HUD system. If the vehicle has to have the windshield replaced, get one that is designed for HUD or the HUD image may look out of focus.

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Vehicle Care

High Intensity Discharge (HID) Lighting

License Plate Lamp

{ Warning

The 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.

Lamp Assembly

Bulb Assembly

1. Bulb Socket 2. Bulb 3. Lamp Assembly To replace one of these bulbs: 1. Push the lamp assembly (3)

toward the center of the vehicle. 2. Pull the lamp assembly down to

remove.

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 (1).

5. Push the replacement bulb

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

6. Push the lamp assembly back

into position until the release tab locks into place.

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Replacement Bulbs

Electrical System

Exterior Lamp

License Plate Lamp

Bulb

Number W5W LL

For replacement bulbs not listed here, contact your dealer.

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

10-31

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. Wiper function is available immediately after the wiper switch is set to off, and back to on. To protect the wiper motor from overheating, the wipers may slow down when the windshield is dry for a long period of time. If a period of dry operation, or little moisture, exceeds ten minutes, the wipers may switch to intermittent operation, and remain there. When moisture is again detected on the windshield, wiper operation will return to the operator selected speed.

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Vehicle Care

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 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 10-32, Instrument Panel Fuse Block on page 10-35, and Rear Compartment Fuse Block on page 10-38.

Engine Compartment Fuse Block The underhood fuse block is on the passenger side of the engine compartment.

Lift the fuse block cover to access the fuses. The vehicle may not be equipped with all of the fuses and relays shown.

{ Caution

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

10-33

Number

Usage

*3

*8

10
11
12
13

14

15

Not Used Not Used Passenger Motorized Seat Belt Body Control Module 6
Not Used Driver Power Seat Not Used Headlamp Washer Relay Not Used Not Used Not Used Not Used Passenger Power Seat Body Control Module 5
Front Wiper

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Vehicle Care

Number

Usage

16
*17
18
19

20

*21
22

23
24
25

*26
27

28

Not Used Headlamp Washer Not Used Antilock Brake System Pump Antilock Brake System Valve AIR Pump Driver Motorized Seat Belt Wiper Control Relay Wiper Speed Relay Engine Control Module Relay AIR Pump Relay Spare/Heated Seat 2
Body Control Module 1/Spare

Number

*29

30

31

32
33
34

35

36
37
38

39

40

Usage

Number

Usage

AFS AHL/ Pedestrian Protection Passenger Window Switch Body Control Module 7
Sunroof Not Used AOS Display/MIL Ignition Rear Electrical Center Ignition Spare PT Fuse Oxygen Sensor Ignition Coils/ Injectors Ignition Coils/ Injectors/Spare Engine Control Module

41
*42
43
44
45
46
47

48

49

*50

*51
*52

53

Fuel Heater AIR Solenoid Relay Washer Not Used Front Washer Relay Not Used Instrument Panel Body Ignition Fuel System Control Module Ignition Heated Steering Wheel Steering Column Lock Coolant Pump Coolant Pump Relay Air Conditioning Compressor Clutch

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Number

*54
55

*56

57

58
59
60
*61

62

*63

*64

Usage AIR Solenoid Transmission Control Module/ Spare Headlamp Low Relay Headlamp High Relay Starter Starter Relay Run/Crank Relay Vacuum Pump Relay Air Conditioning Control Relay Adaptive Headlamp Leveling Left High Intensity Discharge Headlamp

Usage

Right High Intensity Discharge Headlamp Headlamp High Left/Right Horn Horn Relay Cooling Fan Aero Shutter Transmission Control Module Ignition Engine Control Module Ignition Brake Vacuum Pump Not Used

Number

*65

66

67
68
69
70
71

72

*73

74

* Optional

Vehicle Care

10-35

Instrument Panel Fuse Block The instrument panel fuse block is in the end of the driver side of the instrument panel.

To access the fuses, remove the end panel by gently prying with a plastic tool near each clip, beginning at the point shown.

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10-36

Vehicle Care

To install the end cover, insert the tabs on the back of the cover into the slots in the instrument panel at the points shown. Align the clips with the slots in the instrument panel, and press the cover into place. The vehicle may not be equipped with all of the fuses and relays shown.

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Vehicle Care

10-37

Mini Fuses

Usage

Mini Fuses

Usage

Mini Fuses

Usage

10
11

12

13
14
15

Motorized Cupholder Electric Steering Column Lock Data Link Connector Heater, Ventilation, and Air Conditioning Control Tilt and Telescoping Steering Column Spare Glove Box Release Shunt Body Control Module 1
Body Control Module 5
Spare Spare Spare

16
17
18
19
20
21
22

23

24
25

26
27

28
29

Spare Spare Spare Spare Spare Spare Sensing Diagnostic Module/Automatic Occupant Sensing Radio/DVD/Heater, Ventilation, and Air Conditioning Display Heated Steering Wheel Wireless Charger Steering Wheel Switches Spare Visor

30

Spare

J Case Fuses

31
32
33

Circuit

Breakers

CB1

CB7

Relays

K10

K605

Usage

Spare Spare Front Heater, Ventilation, and Air Conditioning Blower

Usage

Retained Accessory Power/Accessory Power Outlet Power Spare

Usage

Retained Accessory Power/Accessory Logistics

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10-38

Vehicle Care

Relays K644

Usage

Glove Box Release

Rear Compartment Fuse Block

The rear compartment fuse block is behind a cover on the driver side of the rear compartment. The vehicle may not be equipped with all of the fuses, relays, and features shown.

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Vehicle Care

10-39

Number

Usage

Number

Usage

Number

Usage

*1

*4

10
*11
12

13

Electronic Limited Slip Differential/DC DC Transformer Left Window Body Control Module 8
A/C Inverter Passive Entry Passive Start Battery 1
Body Control Module 4
Heated Mirrors Amplifier Rear Window Defogger Glass Break Trailer Connector OnStar (If Equipped) Right Window

14

15
16
*17
*18
*19
20

21

22

23
24

*25
*26

*27

Electric Parking Brake Not Used Trunk Release Run Relay Logistics Relay Logistics Fuse Rear Window Defogger Relay Mirror Window Module Pedestrian Protection Canister Vent Pedestrian Protection Rear Vision Camera Front Ventilated Seats SBZA/LDW/EOCM

*28
*29
*30

*31

32

*33
*34
35
*36
37

38
39

Trailer/Sunshade Rear Heated Seats Semi-Active Damping System Transfer Case Control Module/ Electronic Limited Slip Differential Theft Module/ Universal Garage Door Opener/Rain Sensor UPA Radio/DVD Not Used Trailer Fuel Pump/Fuel System Control Module Not Used Not Used

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10-40

Vehicle Care

Number

Usage

Number

51

52
53
54
55
*56

* Optional

40
41
*42

43

44
45

46

47
48
*49
50

Not Used Not Used Memory Seat Module Body Control Module 3
Not Used Battery Regulated Voltage Control Engine Control Module Battery Not Used Not Used Trailer Module Door Lock Security

Usage Rear Closure Release Not Used Not Used Door Lock Security Not Used Fuel Door

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

(Continued)

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Warning (Continued)

Warning (Continued)

and a serious crash. See Vehicle Load Limits on page 9-11.

. 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.

(Continued)

. 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.

. 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.

Vehicle Care

10-41

See Tire Pressure for High-Speed Operation on page 10-50 for inflation pressure adjustment for high-speed driving.

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 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

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Vehicle Care

traction or performance as winter tires on snow or ice-covered roads. See Winter Tires on page 10-42.

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 ice or snow 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. 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

tread type on all four wheel positions.

. Use only radial ply tires of the

same size, load range, and speed rating as the original equipment tires.

Winter tires with the same speed rating as the original equipment tires may not be available for H, V, W, Y, and ZR speed rated tires. If winter tires with a lower speed rating are chosen, never exceed the tire's maximum speed capability.

Run-Flat Tires This vehicle, when new, had run-flat tires. There is no spare tire, no tire changing equipment, and no place to store a tire in the vehicle. The vehicle also has a Tire Pressure Monitor System (TPMS) that indicates a loss of tire pressure in any of the tires.

{ Warning If the low tire warning light displays on the instrument cluster, the handling capabilities will be reduced during severe maneuvers. Driving too fast could cause loss of control and you or others could be injured. Do not drive over 90 km/h (55 mph) when the low tire warning light is displayed. Drive cautiously and check the tire pressures as soon as possible.

Run-flat tires can be driven on with no air pressure. There is no need to stop on the side of the road to change the tire. Continue driving; however, do not drive too far or too fast. Driving on the tire may not be possible if there is permanent damage. To prevent permanent damage, keep speed below 80 km/h (50 mph). With a light load the vehicle can be driven up to 100 km (60 mi); with a moderate load 80 km

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(50 mi); and a heavy load 45 km (25 mi). As soon as possible, contact the nearest authorized GM or run-flat servicing facility for inspection and repair or replacement. When driving on a deflated run-flat tire, avoid potholes and other road hazards that could damage the tire and/or wheel beyond repair. When a tire has been damaged, or driven any distance while deflated, check with an authorized run-flat tire service center to determine whether the tire can be repaired or should be replaced. To maintain the run-flat feature, all replacement tires must be run-flat tires. To locate the nearest GM or run-flat servicing facility, call Customer Assistance. The valve stems on run-flat tires have sensors that are part of the TPMS. See Tire Pressure Monitor System on page 10-51. These sensors contain batteries that are designed to last for 10 years under

normal driving conditions. See your dealer for wheel or sensor replacement.

{ Caution

Using liquid sealants can damage the tire valves and tire pressure monitor sensors in the run-flat tires. This damage is not covered by the vehicle warranty. Do not use liquid sealants in run-flat tires.

Low-Profile Tires If the vehicle has 255/35R19
size tires, they are classified as low-profile tires.

{ Caution Low-profile tires are more susceptible to damage from road hazards or curb impact than standard profile tires. Tire and/or

(Continued)

Vehicle Care

10-43

Caution (Continued)

wheel assembly damage can occur when coming into contact with road hazards like potholes, or sharp edged objects, or when sliding into a curb. The warranty does not cover this type of damage. Keep tires set to the correct inflation pressure and when possible, avoid contact with curbs, potholes, and other road hazards.

Summer Tires

High Performance Summer Tires This vehicle may come with 245/ 40R18 (front) and 275/35R18 (rear) high performance summer tires. These tires have a special tread and compound that are optimized for maximum dry and wet road performance. This special tread and compound will have decreased performance in cold climates, and on ice and snow. We recommend

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Caution (Continued)

directly on the tires. Always inspect tires before use. See Tire Inspection on page 10-55.

Tire Sidewall Labeling Useful information about a tire is molded into its sidewall. The examples show a typical passenger tire sidewall.

10-44

Vehicle Care

installing winter tires on the vehicle if frequent driving at temperatures below approximately 5°C (40°F) or on ice or snow covered roads is expected. See Winter Tires on page 10-42.

{ Caution

High performance summer tires have rubber compounds that lose flexibility and may develop surface cracks in the tread area at temperatures below -7°C (20°F). Always store high performance summer tires indoors and at temperatures above -7°C (20°F) when not in use. If the tires have been subjected to -7°C (20°F) or less, let them warm up in a heated space to at least 5°C (40°F) for 24 hours or more before being installed or driving a vehicle on which they are installed. Do not apply heat or blow heated air

(Continued)

Passenger (P-Metric) Tire Example (1) 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. (2) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance

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criteria have a TPC specification code molded onto the sidewall. GM's TPC specifications meet or exceed all federal safety guidelines. (3) 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. DOT Tire Date of