2013 Cadillac SRX Owners Manual

{ WARNING

{ WARNING

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

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

What to Add Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 11‑13. Always clean the brake fluid reservoir cap and the area around the cap before removing it. This helps keep dirt from entering the reservoir.

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.

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

{ 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.

Vehicle Storage

All-Wheel Drive

Vehicle Care

10-23

{ 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 10‑82 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.

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.

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10-24

Vehicle Care

2. Firmly apply both the parking brake and the regular brake. See 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.

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 9‑28. 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 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.

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Vehicle Care

10-25

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 or cracking. See Maintenance Schedule on page 11‑4.

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 11‑15. Notice: 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. Front Wiper Blade Replacement To replace the wiper blade assembly: 1. Pull the windshield wiper assembly away from the windshield.

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.

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.

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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.

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Vehicle Care

To remove the cover:

To remove the wiper blade:

1. Slide a plastic tool under the

cover and push upward to unsnap.

2. Slide the cover toward the wiper

blade tip to unhook it from the blade assembly.

3. Remove the cover. 4. After wiper blade replacement,

ensure that the cover hook slides into the slot in the blade assembly.

5. Snap the cover down to secure.

1. Lift the wiper arm away from the

windshield.

2. Push the release lever (2) to

disengage the hook and push the wiper arm (1) out of the blade assembly (3).

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

4. Replace the wiper cover.

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Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑33. 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

10-27

High Intensity Discharge (HID) Lighting

Headlamps

{ 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.

Base Headlamp Assembly (Rear View Passenger Side) 1. Low-Beam Headlamp/Daytime

Running Lamp (DRL) 2. High-Beam Headlamp 3. Turn Signal Lamp

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10-28

Vehicle Care

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 10‑5.

{ 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.

Uplevel Headlamp Assembly (Rear View Driver Side) 1. High/Low-Beam Headlamp (To

be replaced at dealer only)

2. Daytime Running Lamp (DRL) 3. Turn Signal Lamp

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 10‑5.

2. Remove the air cleaner/filter

cover. See Engine Air Cleaner/ Filter on page 10‑11.

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3. Lift the air cleaner/filter base to disengage from the three pins.

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

1. From the back side of the

headlamp assembly, remove the top cap to replace the low-beam headlamp/DRL bulb.

2. From the back side of the

headlamp assembly, remove the bottom cap to replace the high-beam headlamp bulb.

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

the headlamp assembly.

5. Replace the bulb in the bulb

6.

socket. Install the bulb socket in the headlamp assembly.

7. Connect the electrical connector.

Vehicle Care

10-29

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 (Uplevel) The high/low beam headlamps on the uplevel are High Intensity Discharge (HID) and should be replaced at the dealer.

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Vehicle Care

Daytime Running Lamp (DRL) (Uplevel)

1. From the back side of the

headlamp assembly, remove the bottom cap to replace the DRL bulb.

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.

Front Turn Signal Lamp (Base and Uplevel) 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

10-31

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

on page 2‑13.

4. Remove the two screws from the

6. Turn the turn signal lamp bulb

taillamp assembly.

5. Pull the taillamp assembly

straight back to remove.

socket counterclockwise to remove it from the taillamp assembly.

7. Pull the bulb straight out from

the socket.

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.

2. Remove the push pin (1) on the

taillamp cover (2).

3. Remove the taillamp cover from

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

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10-32

Vehicle Care

10. Reinstall the taillamp cover by

3. Remove the taillamp cover from

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

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

on page 2‑13.

4. Remove the two screws from the

taillamp assembly.

5. Pull the taillamp assembly

straight back to remove.

6. Disconnect the wiring harness

connector from the back-up bulb/ socket assembly.

8.

7. Turn the back-up bulb socket counterclockwise to remove it from the taillamp assembly. Install a new bulb/socket assembly into the taillamp assembly, and turn the bulb/ socket clockwise until it clicks. 9. Reinstall the taillamp assembly

and tighten the screws.

2. Remove the push pin (1) on the

taillamp cover (2).

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10. Reinstall the taillamp cover by

3. Turn the lamp assembly down to

snapping it into place.

remove from liftgate.

11. Push the push pin to secure

the taillamp cover.

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

on page 2‑13.

4. Turn the bulb socket (1)

counterclockwise to remove from lamp assembly (3).

5. Pull the bulb (2) 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.

Passenger Side Shown, Driver

Side Similar

2. Push the left end of the lamp

assembly towards the right.

Vehicle Care

10-33

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

Replacement Bulbs

Exterior Lamp

Back-up Lamp

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

Bulb

Number Hyperclick

PH16W 7443 ULL

9005LL

H11LL

W5WLL 7444NA

7440

For replacement bulbs not listed here, contact your dealer.

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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 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.

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 possible. To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse Block on page 10‑35, Instrument Panel Fuse Block on page 10‑37, and Rear Compartment Fuse Block on page 10‑39.

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Vehicle Care

10-35

Engine Compartment Fuse Block To remove the fuse block cover, press the 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.

Engine Compartment Fuse Block

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

J-Case Fuses

Usage

12

Wiper Vacuum Pump

J-Case Fuses

24

25

Usage

Antilock Brake System Pump Rear Electrical Center 1

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10-36

Vehicle Care

J-Case Fuses

26

41
42
45

Mini Fuses

Usage

Mini Fuses

Rear Electrical Center 2
Cooling Fan 2
Starter Cooling Fan 1

Usage Engine Control Module Battery Transmission Control Module Battery Engine Control Module Run Crank Post–Catalytic Converter O2
Sensor Pre–Catalytic Converter O2
Sensor

10
11
13
14

15
16

17
18
19

20

30

Usage Engine Control Module Powertrain Fuel Injectors–Even Fuel Injectors-Odd Washer Heated Steering Wheel Heads Up Display Instrument Cluster/ Malfunction Indicator Lamp/Ignition Air Quality Sensor Headlamp Washer Transmission Control Module Run Crank Rear Electrical Center Run Crank Switch Back Light

Mini Fuses

32

33

34

35

36

46

47

50
51
52

53

Usage Battery Sense (Regulated Voltage Control) Adaptive Forward Lighting/Adaptive Headlamp Leveling Module Body Control Module 7
Electronic Brake Control Module Air Conditioning Compressor Clutch Low-Beam Headlamp-Right Low-Beam Headlamp-Left Front Fog Lamps Horn Fuel System Control Module Headlamp Level

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Mini Fuses

Usage

Mini Relays

Usage

54

55

56

57

65

66
67
68
69
70
71
72

Sensing Diagnostic Module Ignition High-Beam Headlamp-Right High-Beam Headlamp-Left Ignition Steering Column Lock Trailer Right Stoplamp Trailer Left Stoplamp Spare Spare Spare Spare Spare Spare

13
15

Micro Relays

10
12
14

Powertrain Cooling Fan 2
Cooling Fan 1
Run/Crank

Usage

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

U Micro Relays

Usage

Air Conditioning Compressor Clutch Headlamp Washer

Vehicle Care

10-37

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

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10-38

Vehicle Care

Mini Fuses

Usage

DISPLY S/ROOF

Display Sunroof

RVC MIRR Rear Vision

UHP

Camera Mirror Universal Handsfree Phone Radio Auxiliary Power Outlet – Instrument Panel/Console APO – CNSL Auxiliary Power

RDO APO – IP/CNSL

Outlet – Floor Console Body Control Module 3
Body Control Module 4
Body Control Module 5
OnStar® System (If Equipped)

Instrument Panel Fuse Block

BCM 1

BCM 4

BCM 5

ONSTAR

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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 Connector Instrument Cluster Steering Wheel Switch Body Control Module 1
Body Control Module 2

WHL SW BCM 3

IPC STR

BCM 2

DLC

AMP/RDO Amplifier/Radio

HVAC

Heating Ventilation & Air Conditioning

J-Case Fuses BCM 8

Usage

Body Control Module 8

FRT BLWR Front Blower

Relays

Usage

LOGIC RLY/

SHUNT

RAP/

ACCY RLY

Logistics Relay/ Shunt Retained Accessory Power/ Accessory Relay

Breakers HTR DR HTR PAS

Usage

Heated Driver Seat Heated Passenger Seat

Vehicle Care

10-39

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, relays, and features shown.

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10-40

Vehicle Care

Fuses SPARE FUSES

Usage Spare Fuses

AOS MDL Automatic Occupant

SPARE SPARE DLC2

PASS DR WDO SW

DRV

Sensing Module Not Used Not Used Data Link Connector 2
Passenger Door Window Switch Driver Power Seat

PWR SEAT PASS DR PWR SEAT MDL TRLR Trailer Module RPA MDL Rear Parking Assist

Passenger/Driver Power Seats

Module Rear Drive Module Trailer Park Lamps

RDM PRK

LPS TRLR

Rear Compartment Fuse Block

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Usage

Fuses

Usage

Fuel Pump

SADS MDL Semi Active

Fuses FUEL PUMP * SEC

Security

INFOTMNT Infotainment * TRLR EXP Trailer Export REAR/WPR Rear Wiper

MIR

WDO MDL

VICS

CNSTR VENT LGM LOGIC

Mirror Window Module Vehicle Information Communications System (Export) Canister Vent

Liftgate Module Logic

CAMERA Rear Vision Camera

FRT

VENT SEAT

TRLR

Front Ventilated Seats Trailer Module

Damping System Module Rear Heated Seats

REAR

HTD SEAT

FRT

Front Heated Seats

HTD SEAT

Spare Liftgate Shunt Rear Defog

SPARE * L/GATE SHUNT REAR DEFOG * BCM THEFT * TRLR 2
UGDO

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

PRK

BRK MDL

Park Brake Module

SPARE

Not Used

Vehicle Care

10-41

Fuses WNDO

IGN/

THEFT 1

LGM IGN/

THEFT 2
EOCM/ SBZA

Usage Power Window Ignition/Theft 1

Liftgate Module Ignition/Theft 2

External Object Calculating Module/ Side Blind Zone Alert

HTD MIR Heated Mirror AUX PWR Auxiliary Power

Outlet

Relays SPARE * FUEL PUMP WPR

Usage

Not Used Fuel Pump

Wiper Control

CONTRL * RUN RLY Run Relay

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10-42

Vehicle Care

Relays LOGIC

DEFOG REAR

Usage Logistic Relay (Export) Rear Window Defogger

*Denotes uplevel content.

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.

. 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.

(Continued)

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WARNING (Continued)

WARNING (Continued)

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.

See Tire Pressure for High-Speed Operation on page 10‑52 for inflation pressure adjustment for high-speed driving.

. 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.

. Improperly repaired tires can cause a crash. Only the dealer or an authorized tire service

(Continued)

Vehicle Care

10-43

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 traction or performance as winter tires on snow or ice-covered roads. See Winter Tires on page 10‑44.

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10-44

Vehicle Care

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 10‑59. 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.

Summer Tires This vehicle may come with 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 decrease performance in cold climates, and on ice and snow. We recommend installing winter tires on the vehicle if frequent driving in cold temperatures or on snow or ice covered roads is expected. See Winter Tires on page 10‑44.

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

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,

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and service description. See the “Tire Size” illustration later in this section. (2) 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. (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 Manufacture: The last four digits of the TIN indicate the tire manufactured date. The first two digits represent the week (01–52) and the last two digits, the year. For example, the third week of the year 2010 would have a four-digit DOT date of 0310. (4) Tire Identification Number (TIN): The letters and numbers following the DOT (Department of Transportation) code are the Tire Identification Number (TIN). The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture.

Vehicle Care

10-45

(5) Tire Ply Material: The type of cord and number of plies in the sidewall and under the tread. (6) Uniform Tire Quality Grading (UTQG): Tire manufacturers are required to grade tires based on three performance factors: treadwear, traction, and temperature resistance. For more information see Uniform Tire Quality Grading on page 10‑62. (7) Maximum Cold Inflation Load Limit: Maximum load that can be carried and the maximum pressure needed to support that load.

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Vehicle Care

Compact Spare Tire Example

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

(2) Temporary Use Only: The compact spare tire or temporary use tire should not be driven at speeds over 80 km/h (50 mph). The compact spare tire is for emergency use when a regular road tire has lost air and gone flat. If the vehicle has a compact spare tire, see Compact Spare Tire on page 10‑81 and If a Tire Goes Flat on page 10‑65. (3) Tire Identification Number (TIN): The letters and numbers following the DOT (Department of Transportation) code are the Tire Identification Number (TIN). The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture.

(4) Maximum Cold Inflation Load Limit: Maximum load that can be carried and the maximum pressure needed to support that load. (5) Tire Inflation: The temporary use tire or compact spare tire should be inflated to 420 kPa (60 psi). For more information on tire pressure and inflation see Tire Pressure on page 10‑51. (6) 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.

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(7) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. GM's TPC specifications meet or exceed all federal safety guidelines.

Tire Designations

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

(1) 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.

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(2) Tire Width: The three-digit number indicates the tire section width in millimeters from sidewall to sidewall. (3) 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 3 of the illustration, it would mean that the tire's sidewall is 60 percent as high as it is wide. (4) 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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(5) Rim Diameter: Diameter of the wheel in inches. (6) Service Description: These characters represent the load index and speed rating of the tire. The load index represents the load carrying capacity a tire is certified to carry. The speed rating is the maximum speed a tire is certified to carry a load.

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

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

Bias Ply Tire: A pneumatic tire in which the plies are laid at alternate angles less than 90 degrees to the centerline of the tread. Cold Tire Pressure: The amount of air pressure in a tire, measured in kPa (kilopascal) or psi (pounds per square inch) before a tire has built up heat from driving. See Tire Pressure on page 10‑51. Curb Weight: The weight of a motor vehicle with standard and optional equipment including the maximum capacity of fuel, oil, and coolant, but without passengers and cargo.

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DOT Markings: A code molded into the sidewall of a tire signifying that the tire is in compliance with the U.S. Department of Transportation (DOT) Motor Vehicle Safety Standards. The DOT code includes the Tire Identification Number (TIN), an alphanumeric designator which can also identify the tire manufacturer, production plant, brand, and date of production. GVWR: Gross Vehicle Weight Rating. See Vehicle Load Limits on page 9‑10. GAWR FRT: Gross Axle Weight Rating for the front axle. See Vehicle Load Limits on page 9‑10. GAWR RR: Gross Axle Weight Rating for the rear axle. See Vehicle Load Limits on page 9‑10.

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.

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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 lb). See Vehicle Load Limits on page 9‑10. Occupant Distribution: Designated seating positions. 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.

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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 10‑51 and Vehicle Load Limits on page 9‑10. 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 in) of tread remains. See When It Is Time for New Tires on page 10‑59. 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 10‑62. Vehicle Capacity Weight: The number of designated seating positions multiplied by 68 kg (150 lb) plus the rated cargo load. See Vehicle Load Limits on page 9‑10. 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 capacity weight and the original equipment tire size and recommended inflation pressure.

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See “Tire and Loading Information Label” under Vehicle Load Limits on page 9‑10.

Overinflated tires, or tires that have too much air, can result in:

Tire Pressure Tires need the correct amount of air pressure to operate effectively. Notice: Neither tire underinflation nor overinflation is good. Underinflated tires, or tires that do not have enough air, can result in:

. Tire overloading and

overheating which could lead to a blowout.

. Premature or

irregular wear. . Poor handling. . Reduced fuel economy.

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

road hazards.

The Tire and Loading Information label on the vehicle indicates the original equipment tires and the correct cold tire inflation pressures. The recommended pressure is the minimum air pressure needed to support the vehicle's maximum load carrying capacity. See Vehicle Load Limits on page 9‑10.

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How the vehicle is loaded affects vehicle handling and ride comfort. Never load the vehicle with more weight than it was designed to carry.

When to Check Check the tires once a month or more. Do not forget the compact spare, if the vehicle has one. The cold compact spare tire pressure should be at 420 kPa (60 psi). See Compact Spare Tire on page 10‑81. How to Check Use a good quality pocket-type gauge to check tire pressure. Proper tire inflation cannot be determined by looking at the tire. Check the tire inflation pressure when the tires are cold, meaning the vehicle has not been driven for at least three hours or no more than 1.6 km (1 mi).

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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 the recommended pressure is reached. If the inflation pressure is high, press on the metal stem in the center of the tire valve to release air. Recheck the tire pressure with the tire gauge. Return the valve caps on the valve stems to prevent leaks and keep 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 buildup 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.

Vehicles with P235/65R18, P235/55R20, or 235/55R20 size tires require inflation pressure adjustment when driving the vehicle at speeds of 160 km/h (100 mph) or higher. Set the cold inflation pressure to the maximum inflation pressure shown on the tire sidewall, or 260 kPa (38 psi), whichever is lower. Return the tires to the recommended cold tire inflation pressure when high-speed driving has ended. See Vehicle Load Limits on page 9‑10 and Tire Pressure on page 10‑51. The maximum load and inflation pressure is molded on the tire 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.

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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.) As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire

pressure telltale when one or more of your tires is significantly under-inflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver's responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale. Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly.

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The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly. See Tire Pressure Monitor Operation on page 10‑54.

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Federal Communications Commission (FCC) Rules and with Industry Canada Standards See Radio Frequency Statement on page 13‑21 for information regarding Part 15 of the Federal Communications Commission (FCC) Rules and with Industry Canada Standards RSS-GEN/210/220/310.

Tire Pressure Monitor Operation This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS is designed to warn the driver when a low tire pressure condition exists. TPMS sensors are mounted onto each tire and wheel assembly, excluding the spare tire and wheel assembly. The TPMS sensors monitor the air pressure in the tires and transmits the tire pressure readings to a receiver located in the vehicle.

For additional information and details about the DIC operation and displays see Driver Information Center (DIC) on page 5‑27. The low tire pressure warning light may come on in cool weather when the vehicle is first started, and then turn off as the vehicle is driven. This could be an early indicator that the air pressure is getting low and needs to be inflated to the proper pressure. A Tire and Loading Information label, attached to your vehicle, shows the size of the original equipment tires and the correct inflation pressure for the tires when they are cold. See Vehicle Load Limits on page 9‑10, for an example of the Tire and Loading Information label and its location. Also see Tire Pressure on page 10‑51.

When a low tire pressure condition is detected, the TPMS illuminates