2010 Cadillac SRX Owners Manual

change in many other ways if the wrong replacement brake parts are installed.

Cadillac SRX Owner Manual - 2010

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9-26

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 4‑23.

What to Add Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 10‑6. 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 9‑6 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 Care

9-27

Vehicle Storage

{ WARNING

All-Wheel Drive

Transfer Case

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 9‑101 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.

When to Check and Change Lubricant The transfer case is filled with oil during manufacture, which then does not require changing. It is not necessary to regularly check the transfer case fluid unless there is a leak suspected or an unusual noise is heard. A fluid loss could indicate a problem. It is recommended to have the transfer case serviced at your dealer by trained service technicians.

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9-28

Vehicle Care

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 8‑31 . 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.

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.

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Wiper Blade Replacement Windshield wiper blades should be inspected for wear or cracking. See Scheduled Maintenance on page 10‑2 for more information. It is a good idea to clean or replace the wiper blade assembly on a regular basis or when worn. For proper windshield wiper blade length and type, see Maintenance Replacement Parts on page 10‑8. Notice: 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 your warranty. Do not allow the wiper blade arm to touch the windshield.

Front Wiper Blade Replacement To replace the wiper blade assembly: 1. Pull the windshield wiper assembly away from the windshield.

Vehicle Care

9-29

3. Remove the wiper blade. 4. Reverse steps 1 through 3 for

wiper blade replacement.

Rear Wiper Blade Replacement The rear wiper blade and wiper arm have a cover for protection. The cover must be removed before the wiper blade can be replaced. To remove the cover:

1. Slide a plastic tool under

cover and push upward to unsnap.

2. Press the button in the middle of

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

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9-30

Vehicle Care

2. Slide cover towards wiper blade

tip to unhook from blade assembly.

3. Remove the cover. 4. After wiper blade replacement, ensure that cover hook slides into slot in blade assembly. 5. Snap cover down to secure.

To remove the wiper blade: 1. Lift the wiper arm away from the

windshield.

2. Push the release lever (B) to disengage the hook and push the wiper arm (A) out of the blade assembly (C).

3. Push the new blade assembly securely on the wiper arm until the release lever clicks into place.

4. Replace wiper cover.

A. Wiper Arm B. Release Lever C. Blade Assembly

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Headlamp Aiming The headlamp aiming system has been preset at the factory. If the vehicle is damaged in an accident, the aim of the headlamps can be affected and adjustment could be necessary. It is recommended that a dealer adjust the headlamps. To re-aim the headlamps yourself, use the following procedure.

The vehicle should be properly prepared as follows:

The vehicle should be placed so the headlamps are 7.6 m (25 ft) from a light‐colored wall. The vehicle must have all four tires on a level surface which is level all the way to the wall. The vehicle should be placed so it is perpendicular to the wall. The vehicle should not have any snow, ice, or mud on it.

Vehicle Care

9-31

The vehicle should be fully assembled and all other work stopped while headlamp aiming is being performed. The vehicle should be normally loaded with a full tank of fuel and one person or 75 kg (160 lbs) sitting on the driver seat. Tires should be properly inflated.

Headlamp aiming is done with the vehicle's low-beam headlamps. The high-beam headlamps will be correctly aimed if the low-beam headlamps are aimed properly.

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9-32

Vehicle Care

To adjust the vertical aim: 1. Open the hood. See Hood on

page 9‑5 for more information.

Base Vehicle

Up-level Vehicle

2. Locate the aim point at the

center inner projector condensing lens of the low-beam headlamp, not the outer lens. 3. Measure the distance from the

ground to the aim dot on the low‐beam headlamp. Record the distance.

4. At the wall, measure from the

ground upward (A) to the recorded distance from Step 3 and mark it.

5. Draw or tape a horizontal line (B)

on the wall the width of the vehicle at the height of the mark in Step 4.

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Vehicle Care

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Notice: Do not cover a headlamp to improve beam cut-off when aiming. Covering a headlamp may cause excessive heat build-up which may cause damage to the headlamp. 6. Turn on the low-beam

headlamps and place a piece of cardboard or equivalent in front of the headlamp not being adjusted. This allows only the beam of light from the headlamp being adjusted to be seen on the flat surface.

7. Locate the vertical headlamp

adjusters, which are under the hood near each headlamp assembly. For the vehicle equipped with a base level lamp (halogen bulb), there will be one vertical headlamp adjuster (V1).

For the vehicle equipped with an up-level headlamp (HID), there will be two vertical headlamp adjusters (V1 and V2). Some vehicles have funnel‐ shaped caps on the adjusters for easier access of a Number 2
Phillips screwdriver to turn the adjusters.

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Vehicle Care

8. For the base vehicle, turn the vertical adjuster (V1) until the headlamp beam is aimed to the horizontal tape line. Turn it clockwise or counterclockwise to raise or lower the angle of the beam. For the up-level vehicle, turn the vertical adjusters (V1 and V2) simultaneously until the headlamp beam is aimed to the horizontal tape line. Turn them clockwise or counterclockwise to raise or lower the angle of the beam.

Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 9‑43 . 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.

9. Make sure that the light from the

headlamp is positioned at the bottom edge of the horizontal tape line. The lamp on the left (A) shows the correct headlamp aim. The lamp on the right (B) shows the incorrect headlamp aim.

10. Repeat Steps 7 through 9 for

the opposite headlamp.

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High Intensity Discharge (HID) Lighting

Headlamps

Vehicle Care

9-35

{ 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.

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

Base Headlamp Assembly (Front View Passenger Side) A. Low‐Beam Headlamp/Daytime

Running Lamp (DRL) B. High‐Beam Headlamp C. Turn Signal Lamp

Base Headlamp Assembly (Rear View Passenger Side) A. Low‐Beam Headlamp/Daytime

Running Lamp (DRL) B. High‐Beam Headlamp C. Turn Signal Lamp

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Vehicle Care

Up–Level Headlamp Assembly (Front View Driver Side) A. High/Low‐Beam Headlamp

(To be replaced at dealer only) B. Daytime Running Lamp (DRL) C. Turn Signal Lamp

Up–Level Headlamp Assembly (Rear View Driver Side) A. High/Low‐Beam Headlamp

(To be replaced at dealer only) B. Daytime Running Lamp (DRL) C. Turn Signal Lamp

Driver Side The removal of the underhood electrical center is required for the replacement of one of these bulbs: 1. Open the hood. See Hood on

page 9‑5 .

{ WARNING

Liquids from environment or spillage and/or tools placed on top of or used in the underhood electrical center while the cover is removed can pose a risk of electrical shock/burn to anyone in the vicinity. These conditions can also cause damage to electrical components on the vehicle. Keep liquids and tools away from the underhood electrical center when the cover is removed.

Cadillac SRX Owner Manual - 2010

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2. Unlatch three clips and lift up the

underhood electrical center cover to remove.

Passenger Side The removal of the air filter/cleaner assembly and base is required for the replacement of one of these bulbs: 1. Open the hood. See Hood on

page 9‑5 .

Vehicle Care

9-37

3. Remove the connector lock (B)

located at the bottom of the sensor connector (C).

4. Press on the top and bottom of the sensor connectors (C) and remove.

5. Lift the three retaining clips (D)

on the air filter housing.

6. Turn and tilt cover slightly

upwards and slide cover away from outside edge of vehicle. Lift the cover away from base.

A. Air Duct Clamp B. Connector Lock C. Sensor Connectors D. Retaining Clips

2. Disconnect the outlet duct by

loosening the air duct clamp (A).

7. Lift the air cleaner/filter base to

disengage from three pins.

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9-38

Vehicle Care

Low-Beam Headlamps/Daytime Running Lamps (DRL), High-Beam Headlamps (Base)

1. Remove the top cap for the

low-beam headlamp/DRL bulb replacement from the back of the headlamp assembly.

2. Remove the bottom cap for the

high-beam headlamp bulb replacement from the back of the headlamp assembly.

3. Disconnect electrical connector. 4. Remove the bulb socket from

the headlamp assembly.

5. Replace the bulb in the bulb

socket.

6.

Install the bulb socket in the headlamp assembly.

7. Connect the electrical connector. 8.

Install the cap with the down arrow pointing down in the back of the headlamp assembly. 9. For driver side, reinstall the underhood electrical center cover by latching three clips. 10. For passenger side, reinstall the air filter/cleaner assembly base by pushing to seat. Verify the base is seated securely, then install the engine air filter/cleaner assembly.

High/Low‐Beam Headlamps (Up-Level) The high/low beam headlamps on the up-level are High Intensity Discharge (HID) and should be replaced at the dealer.

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Daytime Running Lamp (DRL) (Up-Level) To replace the Front Turn Signal Lamp:

1. Remove the bottom cap for the DRL bulb replacement from the back of the headlamp assembly. 2. Disconnect electrical connector.

3. Remove the DRL bulb socket from the headlamp assembly.

4. Replace the bulb in the bulb

5.

socket. Install the bulb socket in the headlamp assembly.

6. Connect the electrical connector. 7.

Install the cap with the down arrow pointing down in the back of the headlamp assembly. 8. For driver side, reinstall the underhood electrical center cover by latching three clips. 9. For passenger side, reinstall the air filter/cleaner assembly base by pushing to seat. Verify the base is seated securely, then install the engine air filter/cleaner assembly.

Vehicle Care

9-39

Front Turn Signal Lamp (Base and Up-Level) To replace the Front Turn Signal Lamp: 1. Remove the turn signal lamp

bulb socket from the headlamp assembly.

2. Remove the turn signal lamp

bulb from the socket.

3. Replace the bulb in the bulb

4.

socket. Install the bulb socket in the headlamp assembly.

5. For driver side, reinstall the underhood electrical center cover by latching three clips. 6. For passenger side, reinstall the air filter/cleaner assembly base by pushing to seat. Verify the base is seated securely, then install the engine air filter/cleaner assembly.

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Vehicle Care

Turn Signal Lamps To replace one of these bulbs: 1. Open the liftgate. See Liftgate

(Manual) on page 1‑13 or Liftgate (Power) on page 1‑14.

A. Push Pin B. Taillamp Cover

2. Pull on push pin (A) to release

the taillamp cover (B).

3. Remove the taillamp cover from

the lamp assembly by pulling rearward from the top to unfasten from snap tabs.

4. Remove the two screws from the

taillamp assembly.

5. Pull the taillamp assembly

straight back to remove.

A. Turn Signal Lamp B. Back-Up Bulb/Socket

6. Turn the turn signal lamp (A)

bulb socket counterclockwise to remove it from the taillamp assembly.

7. Pull the bulb straight out from

the socket.

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Vehicle Care

9-41

8. Press a new bulb into the

socket, insert it into the taillamp assembly and turn the bulb socket clockwise until it clicks. 9. Reinstall the taillamp assembly

and tighten the screws.

10. Reinstall the taillamp cover by

snapping it into place.

11. Push the push pin to secure

the taillamp cover.

Back-Up Lamps To replace one of these bulbs: 1. Open the liftgate. See Liftgate

(Manual) on page 1‑13 or Liftgate (Power) on page 1‑14.

4. Remove the two screws from the

taillamp assembly.

5. Pull the taillamp assembly

straight back to remove.

A. Push Pin B. Taillamp Cover

2. Pull on push pin (A) to release

the taillamp cover (B).

3. Remove the taillamp cover from

the lamp assembly by pulling rearward from the top to unfasten from snap tabs.

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Vehicle Care

A. Turn Signal Lamp B. Back–Up Bulb/Socket

6. Disconnect the wire

harness from the back–up bulb/socket (B).

License Plate Lamp To replace one of these bulbs: 1. Open the liftgate. See Liftgate

(Manual) on page 1‑13 or Liftgate (Power) on page 1‑14
for more information.

7. Turn the back–up bulb socket counterclockwise to remove it from the taillamp assembly.

8. Press a new bulb/socket into the

taillamp assembly and turn the bulb/socket clockwise until it clicks.

9. Reinstall the taillamp assembly

and tighten the screws.

10. Reinstall the taillamp cover by

snapping it into place.

11. Push the push pin to secure

the taillamp cover.

Passenger side shown, driver side

similar

2. Push the left end of the lamp

assembly towards the right.

3. Turn the lamp assembly down to

remove from liftgate.

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5. Pull the bulb (B) straight out of

the bulb socket.

6. Push the replacement bulb

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

7. Turn the lamp assembly into the

liftgate engaging the clip side first.

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

Vehicle Care

9-43

Replacement Bulbs

Exterior Lamp

Daytime Running Lamp Fog Lamp Headlamp High-Beam Headlamp Low-Beam License Plate Lamp Turn Signal Front Tail/Turn Signal Rear

Bulb

Number

7443

H10

9005

H10

194
7440

7440

For replacement bulbs not listed here, contact your dealer.

A. Bulb Socket B. Bulb C. Lamp Assembly

4. Turn the bulb socket (A)

counterclockwise to remove from lamp assembly (C).

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9-44

Vehicle Care

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. 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. 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 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 you can.

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Vehicle Care

9-45

To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse Block on page 9‑45 and Rear Compartment Fuse Block on page 9‑49.

Engine Compartment Fuse Block To remove the fuse block cover, press the clips on the cover and lift it straight up. The vehicle might not have all the fuses and features listed. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

Engine Compartment Fuse Block

J-Case Fuses

12

24

Usage

Wiper Vacuum Pump Anitlock Brake System Pump

J-Case Fuses

Usage

25

26

27

Rear Electrical Center 1
Rear Electrical Center 2
Not Used

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9-46

Vehicle Care

J-Case Fuses

41
42
43
44
45

59

Mini Fuses

Usage

Mini Fuses

Cooling Fan 2
Starter Not Used Not Used Cooling Fan 1
Secondary AIR Pump

Usage Engine Control Module Battery Transmission Control Module Battery Mass Air Flow Sensor Not Used Engine Control Module Run Crank

10
11
13

16

17
18

19

20

Usage Post–Catalytic Converter O2
Sensor Pre–Catalytic Converter O2
Sensor Engine Control Module Powertrain Fuel Injectors–Even Fuel Injectors–Odd Washer Instrument Panel Cluster/Malfunction Indicator Lamp/ Ignition Air Quality Sensor Headlamp Washer Transmission Control Module Run Crank Rear Electrical Center Run Crank

Mini Fuses

23
30

32

33

34

35

46

47

50
51

52

Usage Heater Motor Switch Back Light Battery Sense (Regulated Voltage Control) Adaptive Forward Lighting / Adaptive Headlamp Leveling Module Body Control Module 7
Electronic Brake Control Module Low Beam Headlamp‐Right Low Beam Headlamp‐Left Front Fog Lamps Horn Fuel System Control Module

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Mini Fuses

Usage

Mini Fuses

Usage

53

54

55

56

57

65

66

67

Headlamp Level Sensing Diagnostic Module Ignition High Beam Headlamp–Right High Beam Headlamp–Left Ignition Steering Column Lock Trailer Right Stop Lamp Trailer Left Stop Lamp Spare

68
69
70
71
72

Spare Spare Spare Spare Spare

Mini Relays

Usage

13
15

16

Powertrain Cooling Fan 2
Cooling Fan 1
Run/Crank Secondary AIR Pump

Vehicle Care

9-47

Micro Relays

Usage

10
12
14

Vacuum Pump Wiper Control Wiper Speed Starter Cool Fan 3
Low Beam/HID

U Micro Relays

Usage

Headlamp Washer

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9-48

Vehicle Care

Instrument Panel Fuse Block

The instrument panel fuse block is located in the center console between the driver and passenger seats. To access the fuses, open the fuse panel door from the passenger side by pulling it out. To reinstall the door, push the door back into its original location.

Instrument Panel Fuse Block

Mini Fuses

Usage

DISPLY S/ROOF SPARE

UHP

RDO

APO ‐ IP

APO ‐ CNSL

BCM 3

BCM 4

BCM 5

ONSTAR

Display Sun Roof Spare Universal Handsfree Phone Radio Auxiliary Power Outlet ‐ Instrument Panel Auxiliary Power Outlet ‐ Floor Console Body Control Module 3
Body Control Module 4
Body Control Module 5
OnStar® System

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ESCL

BCM 6

AIRBAG

Mini Fuses Usage RAIN SNSR Rain Sensor Body Control Module 6
Electronic Steering Column Lock Sensing and Diagnostic Module Data Link Connection Instrument Panel Cluster Not Used Body Control Module 1
Body Control Module 2

SPARE

BCM 1

BCM 2

DLC

IPC

Mini Fuses AMP/RDO Amplifier/Radio

Usage

HVAC

Heating Ventilation & Air Conditioning

J—Case Fuses

BCM 8

Usage

Body Control Module 8

FRT BLWR Front Blower

Relays

Usage

LOGIC RLY Logistics Relay

RAP/

ACCY RLY

Retained Accessory Power/ Accessory Relay

Vehicle Care

9-49

Rear Compartment Fuse Block

The rear compartment fuse block is located in the cargo area, on the driver side of the vehicle behind the lower trim panel. To open, turn the latch with a flat bladed tool and pull the trim panel from the edges to fold it down. The vehicle may not be equipped with all of the fuses and relays shown.

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Vehicle Care

Fuses SPARE FUSES

AOS MDL

SPARE SPARE SPARE PASS DR WDO SW

DRV

Usage

Spare Fuses

Automatic Occupant Sensing Module Not Used Not Used Not Used Passenger Door Window Switch

Driver Power Seat

PWR SEAT PASS DR PWR SEAT MDL TRLR Trailer Module

Passenge/Driver Power Seats

Rear Compartment Fuse Block

RPA MDL

RDM PRK

LPS TRLR

FUEL PUMP

Rear Parking Assist Module Rear Drive Module

Trailer Park Lamps

Fuel Pump

Fuses * SEC

Usage

Security

INFOTMNT Infotainment * TRLR EXP Trailer Export WPR REAR Rear Wiper

MIR

WDO MDL * SPARE CNSTR VENT LGM LOGIC

Mirror Window Module Not Used

Canister Vent

Lift Gate Module Logic

CAMERA Rear Vision Camera

FRT

Front Ventilated Seats

VENT SEAT TRLR MDL Trailer Module

SADS MDL

Semi Active Damping System Module

RR

HTD SEAT Rear Heated Seats

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Vehicle Care

9-51

Fuses FRT

HTD SEAT

Usage

Front Heated Seats

Theft Horn

Liftgate

Rear Defog

THEFT HORN * LGATE REAR DEFOG * BCM THEFT * TRLR 2

Body Control Module Theft Trailer 2
Universal Garage Door Opener RT WDO Right Window

UGDO

PRK

BRK MDL

Park Brake Module

Usage

Not Used Left Window

Ignition/Theft 1

Liftgate Module

Fuses SPARE LT WDO

IGN/

THEFT 1
LGATE

MDL IGN/

Ignition/Theft 2

THEFT 2
SPARE HTD MIR Heated Mirror

Not Used

AUX PWR

Auxiliary Power Outlet

Usage

Not Used

Fuel Pump

Relays SPARE * FUEL PUMP WPR

CONTRL Wiper Control * RUN RLY Run Relay

LOGIC DEFOG REAR

Logistic Relay Rear Window Defogger

*‐Denotes up‐level content.

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Vehicle Care

Wheels and Tires

Tires Your new vehicle comes with high-quality tires made by a leading tire manufacturer. If you ever have questions about your tire warranty and where to obtain service, see your vehicle Warranty booklet for details. For additional information refer to the tire manufacturer.

{ WARNING

Poorly maintained and improperly used tires are dangerous.

. Overloading your tires can

cause overheating as a result of too much flexing. You could have an air-out and a serious accident. See Vehicle Load Limits on page 8‑11.

. Underinflated tires pose the same danger as overloaded tires. The resulting accident could cause serious injury. Check all tires frequently to maintain the recommended pressure. Tire pressure should be checked when your tires are cold. See Tire Pressure on page 9‑59.

(Continued)

WARNING (Continued)

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

. Worn, old tires can cause accidents. If your tread is badly worn, or if your tires have been damaged, replace them.

See Tire Pressure for High-Speed Operation on page 9‑60 for inflation pressure adjustment for high speed driving.

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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. (D) Tire Identification Number (TIN): The letters and numbers following the DOT (Department of Transportation) code is the

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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 9‑71. (G) Maximum Cold Inflation Load Limit: Maximum load that can be carried and the maximum pressure needed to support that load.

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gone flat. If your vehicle has a compact spare tire, see Compact Spare Tire on page 9‑100 and If a Tire Goes Flat on page 9‑74. (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 9‑59. (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.

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 miles) 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

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(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 Designations

Tire Size The following illustration shows 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.

(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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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: This means 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 psi (pounds per square inch) or kPa (kilopascal) before a tire has built up heat from driving. See Tire Pressure on page 9‑59.

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. 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 8‑11.

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GAWR FRT: Gross Axle Weight Rating for the front axle. See Vehicle Load Limits on page 8‑11. GAWR RR: Gross Axle Weight Rating for the rear axle. See Vehicle Load Limits on page 8‑11. 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. 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 8‑11. Occupant Distribution: Designated seating positions.

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Outward Facing Sidewall: The side of an asymmetrical tire that has a particular side that faces outward when mounted on a vehicle. The side of the tire that contains a whitewall, bears white lettering, or bears manufacturer, brand, and/or model name molding that is higher or deeper than the same moldings on the other sidewall of the tire. Passenger (P-Metric) Tire: A tire used on passenger cars and some light duty trucks and multipurpose vehicles. Recommended Inflation Pressure: Vehicle manufacturer's recommended tire inflation pressure as shown on the tire placard. See Tire Pressure on page 9‑59 and Vehicle Load Limits on page 8‑11.

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Radial Ply Tire: A pneumatic tire in which the ply cords that extend to the beads are laid at 90 degrees to the centerline of the tread. Rim: A metal support for a tire and upon which the tire beads are seated. Sidewall: The portion of a tire between the tread and the bead. Speed Rating: An alphanumeric code assigned to a tire indicating the maximum speed at which a tire can operate. Traction: The friction between the tire and the road surface. The amount of grip provided. Tread: The portion of a tire that comes into contact with the road.

Treadwear Indicators: Narrow bands, sometimes called wear bars, that show across the tread of a tire when only 1.6 mm (1/16 inch) of tread remains. See When It Is Time for New Tires on page 9‑68. UTQGS (Uniform Tire Quality Grading Standards): A tire information system that provides consumers with ratings for a tire's traction, temperature, and treadwear. Ratings are determined by tire manufacturers using government testing procedures. The ratings are molded into the sidewall of the tire. See Uniform Tire Quality Grading on page 9‑71.

Vehicle Capacity Weight: The number of designated seating positions multiplied by 68 kg (150 lbs) plus the rated cargo load. See Vehicle Load Limits on page 8‑11. Vehicle Maximum Load on the Tire: Load on an individual tire due to curb weight, accessory weight, occupant weight, and cargo weight. Vehicle Placard: A label permanently attached to a vehicle showing the vehicle's capacity weight and the original equipment tire size and recommended inflation pressure. See “Tire and Loading Information Label” under Vehicle Load Limits on page 8‑11.

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For additional information regarding how much weight your vehicle can carry, and an example of the Tire and Loading Information label, see Vehicle Load Limits on page 8‑11. How you load your vehicle affects vehicle handling and ride comfort. Never load your vehicle with more weight than it was designed to carry.

Tire Pressure Tires need the correct amount of air pressure to operate effectively. Notice: Do not let anyone tell you that under‐inflation or over‐inflation is all right. It is not. If your tires do not have enough air (under‐inflation), you can get the following:

. Too much flexing . Too much heat . Tire overloading . Premature or irregular wear . Poor handling . Reduced fuel economy

If your tires have too much air (over‐inflation), you can get the following:

. Unusual wear . Poor handling . Rough ride . Needless damage from

road hazards

A vehicle specific Tire and Loading Information label is attached to your vehicle. This label shows your vehicle's original equipment tires and the correct inflation pressures for your tires when they are cold. The recommended cold tire inflation pressure, shown on the label, is the minimum amount of air pressure needed to support your vehicle's maximum load carrying capacity.

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When to Check Check your tires once a month or more. Do not forget to check the compact spare tire, if the vehicle has one. The compact spare should be at 60 psi (420 kPa). For additional information regarding the compact spare tire, see Compact Spare Tire on page 9‑100.

How to Check Use a good quality pocket-type gauge to check tire pressure. You cannot tell if your tires are properly inflated simply by looking at them. Radial tires may look properly inflated even when they are under‐inflated. Check the tire's inflation pressure when the tires are cold. Cold means your vehicle has been sitting for at least three hours or driven no more than 1.6 km (1 mile).

Remove the valve cap from the tire valve stem. Press the tire gauge firmly onto the valve to get a pressure measurement. If the cold tire inflation pressure matches the recommended pressure on the Tire and Loading Information label, no further adjustment is necessary. If the inflation pressure is low, add air until you reach the recommended amount. If you overfill the tire, release air by pushing on the metal stem in the center of the tire valve. Re‐check the tire pressure with the tire gauge. Be sure to put the valve caps back on the valve stems. They help prevent leaks by keeping out dirt and moisture.

Tire Pressure for High-Speed Operation

{ WARNING

Driving at high speeds, 160 km/h (100 mph) or higher, puts an additional strain on tires. Sustained high-speed driving causes excessive heat build up and can cause sudden tire failure. You could have a crash and you or others could be killed. Some high-speed rated tires require inflation pressure adjustment for high speed operation. When speed limits and road conditions are such that a vehicle can be driven at high speeds, make sure the tires are rated for high speed operation, in excellent condition, and set to the correct cold tire inflation pressure for the vehicle load.

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Vehicles with P235/65R18, P235/ 55R20, or 235/55R20 size tires require inflation pressure adjustment when driving your vehicle at speeds of 100 mph (160 km/h) or higher. Set the cold inflation pressure to the maximum inflation pressure shown on the tire sidewall, or 44 psi (300 kPa), whichever is lower. When you end this high-speed driving, return the tires to the cold tire inflation pressure shown on the Tire and Loading Information label. See Vehicle Load Limits on page 8‑11
and Tire Pressure on page 9‑59. You will find the maximum load and inflation pressure molded on the tire's sidewall, in small letters, near the rim flange. It will read something like this: Maximum load 690 kg (1521 lbs) 300 kPa (44 psi) Max. Press.

Tire Pressure Monitor System The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. The TPMS sensors monitor the air pressure in your tires and transmit tire pressure readings to a receiver located in the vehicle. Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label. (If your vehicle has tires of a different size than the size indicated on the vehicle placard or tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.)