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1. Open the trunk.
2. Remove the push pins (1)
retaining the trunk deck trim cover.
3. Pull the hinge cover (3)
rearward.
4. For the passenger side bulb,
remove the pull handle fasteners (2) and pull handle. 5. Pull the trunk deck trim down far enough to gain access to the lamps.
6. Remove the bulb socket by
turning counterclockwise. 7. Remove the bulb from the
socket by pulling straight out.
Driver Side Shown, Passenger Side Similar
1. Taillamp 2. Turn Signal Lamp 3. Stoplamp/Taillamp
To replace any one of these bulbs: 1. Open the trunk. 2. Remove the push pins securing the trunk trim.
3. Pull the trunk lining away from
the taillamp assembly.
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4. Turn the bulb socket
counterclockwise to remove it from the rear taillamp assembly.
5. Pull the bulb straight out to
remove it from the bulb socket.
6. Push the new bulb into the
socket.
7. Push the bulb socket straight in
and turn it clockwise to lock it into place.
8. Reinstall the trunk trim. 9. Reinstall the push pins.
License Plate Lamp
Lamp Assembly
Bulb Assembly
1. Bulb Socket
2. Bulb 3. Lamp Assembly
To replace one of these bulbs: 1. Push the left end of the lamp
assembly toward the right.
2. Turn the lamp assembly down
to remove it.
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. Turn the lamp assembly into the lamp assembly opening engaging the clip side first.
7. Push on the lamp side opposite the clip until the lamp assembly snaps into place.
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Replacement Bulbs
Electrical System
Exterior Lamp
Back-Up Lamp Deck Lid Taillamp Fog Lamp Front Parking/Turn Signal Lamp High-Beam Headlamp License Plate Lamp Low-Beam Headlamp Rear Turn Signal Lamp Stoplamp/Taillamp
Bulb
Number
921K 194
H11 LL 7444NA
H9LL
W5W LL
H11
H21W
7443
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.
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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 the wiper control is turned off. After removal of the blockage, the wiper motor will restart when the control is moved to the desired operating position. Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage. Always clear ice and heavy snow from the windshield before using the windshield wipers. If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.
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Engine Compartment Fuse Block
Caution
Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
To open the fuse block cover, press the clips at the front and back and rotate the cover up to the side.
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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 0 254, Instrument Panel Fuse Block 0 257, and Rear Compartment Fuse Block 0 259.
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Mini Fuses
Amps
Usage
6a 6b
10
11
12
1314
15A
15A
–
–
7.5A
5A
7.5A
– 5A
7.5A
–
25A
–
Ignition coils/ Injectors Spare Empty Empty Mirror defogger Powertrain cooling Mass airflow sensor/Pre O2 sensor Empty Battery potential signal Spare Empty Antilock brake system valves Empty
Engine Compartment Fuse Block
There is a fuse puller in the engine compartment fuse block. The vehicle may not be equipped with all of the fuses, relays, and features shown.
Mini Fuses
Amps
Usage
20A
7.5A
Engine control module Oxygen sensor/Purge solenoid
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Mini Fuses
Amps
Usage
15
17
22
2425
26
31
32
33
34
3510A
10A
–
15A
15A
15A
– 5A –
7.5A 7.5A
Engine control module Transmission control module Empty Right high-beam headlamp Left high-beam headlamp Front fog lamps Empty Airbag Empty Spare Door switch supply/Left power window
Mini Fuses
36
37
38
3940
41
46
47
49
5051
52
Amps
Usage
10A
10A
–
20A
10A
–
–
15A 20A 5A
7.5A
–
Air conditioning compressor clutch Canister vent Empty Fuel system control module Front windshield washer Empty Empty Horn Fuel pump Rearview camera Inside rearview mirror Empty
Amps
Usage
Mini Fuses
53
7.5A
54
7.5A
Ignition engine control module/ Transmission control module Instrument cluster/Fuel system control module/ Heater, ventilation, and air conditioning run/crank
J-Case Fuses
Amps
Usage
16
18
19
30A
30A
30A
Starter control Rear window defogger Front power window
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J-Case Fuses
20
21
23
27
28
2930
42
43
44
4548
Amps
Usage
Relays
Usage
30A
40A
–
50A
–
30A
60A
40A
30A
–
30A
60A
Rear power window Rear electrical center Empty Spare Empty Electric parking brake Antilock brake system pump Engine cooling fan (RPO LEA) Front wipers Empty Engine cooling fan (RPO LEA) Engine cooling fan
10
11
12
13
14
Empty Starter Engine control powertrain Rear window defogger Empty High-beam headlamps Spare Empty Spare EGR/Coolant pump/ AIR solenoid valve Engine cooling fan (RPO LEA) Engine cooling fan (RPO LEA) Engine cooling fan (RPO LEA) Run/Crank
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Instrument Panel Fuse Block
The instrument panel fuse block is on the driver side of the instrument panel. To access the fuses: 1. Access the fuse block by
opening the storage compartment.
2. Pull straight down and out to
remove the storage compartment.
3. Remove the cover. To reinstall the cover, line up the retainers and push into place.
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The vehicle may not be equipped with all of the fuses, relays, and features shown.
Fuses
Amps
Usage
10
2A
20A
20A
20A
10A
20A 20A 30A
30A
30A
Steering wheel switches Body control module Body control module Infotainment system Information display/ Parking assist Cigar lighter Power outlet Body control module Body control module Body control module
Fuses
11
1213
1415
1617
18
19
20
21
Amps 40A 25A
–
7.5A
10A 10A
10A
30A
30A
5A
7.5A
Usage Interior fan Driver power seat Not used Diagnostic connector Airbag Central locking system/ Tailgate Air conditioning system Infotainment system Body control module Passenger power seat Instrument cluster
Instrument Panel Fuse Block
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Fuses
22
23
24
25
26Amps 2A/5A Ignition/
Usage
Electronic key system Body control module Body control module Not used Not used
20A
20A
–
–
Relays
Usage
Trunk open Door security Power outlet
Rear Compartment Fuse Block
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The rear compartment fuse block, if equipped, is on the left side of the trunk behind a cover.
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The vehicle may not be equipped with all of the fuses, relays, and features shown.
Mini Fuses
F02
F03F04
F06Amps
Usage
– 5A
–
–
Empty Rear parking assist Empty Empty
Mini Fuses
F07
F08
F09
F10
F11
F13Amps
Usage
10A
–
–
–
–
–
Spare Empty Empty Empty Empty Empty
Mini Fuses
Amps
Usage
F14
F15
F16F17
F18
F19F20
F21
F22
F24
F25F26
F28
F30
F31
F32–
– 5A
–
–
7.5A
25A 25A
–
– 5A
30A
–
–
30A
–
Empty Empty Rear vision camera Empty Empty Heated steering wheel Sunroof Heated seats Empty Empty Side blind zone alert Spare Empty Empty Amplifier Empty
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J-Case Fuses
Amps
Usage
F1
F5
F12
F23
F27
F29–
–
–
–
30A
–
Empty Empty Empty Empty Passive entry Empty
Relays
Usage
R01
R02
R03
R04
R05Run/Crank Run Empty Empty Empty
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 0 181.
(Continued)
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Warning (Continued)
. Underinflated tires pose
the same danger as overloaded tires. The resulting crash could cause serious injury. Check all tires frequently to maintain the recommended pressure. Tire pressure should be checked when the tires are cold.
. Overinflated tires are more likely to be cut, punctured, or broken by a sudden impact — such as when hitting a pothole. Keep tires at the recommended pressure.
. Worn or old tires can cause a crash. If the tread is badly worn, replace them.
(Continued)
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Warning (Continued)
. Replace any tires that
have been damaged by impacts with potholes, curbs, etc. Improperly repaired tires can cause a crash. Only the dealer or an authorized tire service center should repair, replace, dismount, and mount the tires.
. Do not spin the tires in
excess of 56 km/h (35 mph) on slippery surfaces such as snow, mud, ice, etc. Excessive spinning may cause the tires to explode.
All-Season Tires This vehicle may come with all-season tires. These tires are designed to provide good overall performance on most road surfaces
and weather conditions. Original equipment tires designed to GM's specific tire performance criteria have a TPC specification code molded onto the sidewall. Original equipment all-season tires can be 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 0 262.
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 0 275. 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.
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Low-Profile Tires If the vehicle has P235/45R18
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 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.
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, and service description. See the “Tire Size” illustration later in this section.
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(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
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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. (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 0 277.
(7) Maximum Cold Inflation Load Limit : Maximum load that can be carried and the maximum pressure needed to support that load.
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 0 287 and If a Tire Goes Flat 0 280. (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
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information on tire pressure and inflation see Tire Pressure 0 268. (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. (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. (2) Tire Width : The three-digit number indicates the tire section width in millimeters from sidewall to sidewall.
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(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. (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.
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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 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 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 0 268. 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 0 181. GAWR FRT : Gross Axle Weight Rating for the front axle. See Vehicle Load Limits 0 181. GAWR RR : Gross Axle Weight Rating for the rear axle. See Vehicle Load Limits 0 181. 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.
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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 lb). See Vehicle Load Limits 0 181. 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. 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
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tire inflation pressure as shown on the tire placard. See Tire Pressure 0 268 and Vehicle Load Limits 0 181. 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.
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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 0 275. 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 0 277. Vehicle Capacity Weight : The number of designated seating positions multiplied by 68 kg (150 lb) plus the rated cargo load. See Vehicle Load Limits 0 181.
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. See “Tire and Loading Information Label” under Vehicle Load Limits 0 181.
Tire Pressure Tires need the correct amount of air pressure to operate effectively.
Caution
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. Overinflated tires, or tires that have too much air, can result in:
. Unusual wear. . Poor handling. . Rough ride. . Needless damage from
road hazards.
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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 0 181. 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 0 287.
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). 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.
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Put the valve caps back on the valve stems to keep out dirt and moisture and prevent leaks. Use only valve caps designed for the vehicle by GM. TPMS sensors could be damaged and would not be covered by the vehicle warranty.
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
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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. 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 0 270. See Radio Frequency Statement 0 331.
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 in the vehicle.
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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 0 181, for an example of the Tire and Loading Information label and its location. Also see Tire Pressure 0 268. The TPMS can warn about a low tire pressure condition but it does not replace normal tire maintenance. See Tire Inspection 0 273, Tire Rotation 0 274 and Tires 0 261.
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Caution
Tire sealant materials are not all the same. A non-approved tire sealant could damage the TPMS sensors. TPMS sensor damage caused by using an incorrect tire sealant is not covered by the vehicle warranty. Always use only the GM approved tire sealant available through your dealer or included in the vehicle.
TPMS Malfunction Light and Message The TPMS will not function properly if one or more of the TPMS sensors are missing or inoperable. When the system detects a malfunction, the low tire warning light flashes for about one minute and then stays on for the remainder of the ignition cycle. A DIC warning message also displays. The malfunction light and DIC warning message come on at each ignition cycle until the problem
When a low tire pressure condition is detected, the TPMS illuminates the low tire pressure warning light on the instrument cluster. If the warning light comes on, stop as soon as possible and inflate the tires to the recommended pressure shown on the Tire and Loading Information label. See Vehicle Load Limits 0 181. A message to check the pressure in a specific tire displays in the Driver Information Center (DIC). The low tire pressure warning light and the DIC warning message come on at each ignition cycle until the tires are inflated to the correct inflation pressure. Using the DIC, tire pressure levels can be viewed. For additional information and details about the DIC operation and displays see Driver Information Center (DIC) 0 113.
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is corrected. Some of the conditions that can cause these to come on are: . One of the road tires has been
replaced with the spare tire. The spare tire does not have a TPMS sensor. The malfunction light and DIC message should go off after the road tire is replaced and the sensor matching process is performed successfully. See “TPMS Sensor Matching Process” later in this section.
. The TPMS sensor matching process was not done or not completed successfully after rotating the tires. The malfunction light and the DIC message should go off after successfully completing the sensor matching process. See "TPMS Sensor Matching Process" later in this section.
. One or more TPMS sensors are
missing or damaged. The malfunction light and the DIC message should go off when the TPMS sensors are installed and
the sensor matching process is performed successfully. See your dealer for service.
. Replacement tires or wheels do not match the original equipment tires or wheels. Tires and wheels other than those recommended could prevent the TPMS from functioning properly. See Buying New Tires 0 275.
. Operating electronic devices or being near facilities using radio wave frequencies similar to the TPMS could cause the TPMS sensors to malfunction.
If the TPMS is not functioning properly it cannot detect or signal a low tire condition. See your dealer for service if the TPMS malfunction light and DIC message comes on and stays on. TPMS Sensor Matching Process Each TPMS sensor has a unique identification code. The identification code needs to be matched to a new tire/wheel position after rotating the vehicle’s tires or replacing one or
more of the TPMS sensors. The TPMS sensor matching process should also be performed after replacing a spare tire with a road tire containing the TPMS sensor. The malfunction light and the DIC message should go off at the next ignition cycle. The sensors are matched to the tire/wheel positions, using a TPMS relearn tool, in the following order: driver side front tire, passenger side front tire, passenger side rear tire, and driver side rear. See your dealer for service or to purchase a relearn tool. A TPMS relearn tool can also be purchased. See Tire Pressure Monitor Sensor Activation Tool at www.gmtoolsandequipment.com or call 1-800-GM TOOLS (1-800-468-6657). There are two minutes to match the first tire/wheel position, and five minutes overall to match all four tire/wheel positions. If it takes longer, the matching process stops and must be restarted.
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The TPMS sensor matching process is: 1. Set the parking brake. 2. Turn the ignition to ON/RUN
with the engine off or place the vehicle power mode in ON/ RUN/START. See Ignition Positions (Keyless Access) 0 185 or Ignition Positions (Key Access) 0 186.
3. Use the MENU button to select
the Vehicle Information Menu in the Driver Information Center (DIC).
4. Use the thumbwheel to scroll to
the Tire Pressure Menu Item screen.
5. Press the SET/CLR button to
begin the sensor matching process. A message asking if the process should begin should appear.
6. Press the SET/CLR button
again to confirm the selection.
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The horn sounds twice to signal the receiver is in relearn mode and the TIRE LEARNING ACTIVE message displays on the DIC screen.
7. Start with the driver side
front tire.
matching process is no longer active. The TIRE LEARNING ACTIVE message on the DIC display screen goes off.
12. Turn the ignition to LOCK/OFF
or press STOP to turn the ignition off.
8. Place the relearn tool against
13. Set all four tires to the
the tire sidewall, near the valve stem. Then press the button to activate the TPMS sensor. A horn chirp confirms that the sensor identification code has been matched to this tire and wheel position.
9. Proceed to the passenger side
front tire, and repeat the procedure in Step 8.
10. Proceed to the passenger side
rear tire, and repeat the procedure in Step 8.
11. Proceed to the driver side rear tire, and repeat the procedure in Step 8. The horn sounds two times to indicate the sensor identification code has been matched to the driver side rear tire, and the TPMS sensor
recommended air pressure level as indicated on the Tire and Loading Information label.
Tire Inspection We recommend that the tires, including the spare tire, if the vehicle has one, be inspected for signs of wear or damage at least once a month. Replace the tire if: . The indicators at three or
more places around the tire can be seen.
. There is cord or fabric
showing through the tire's rubber.
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. The tread or sidewall is
cracked, cut, or snagged deep enough to show cord or fabric.
. The tire has a bump, bulge,
or split.
. The tire has a puncture, cut, or other damage that cannot be repaired well because of the size or location of the damage.
Tire Rotation Tires should be rotated every 12 000 km (7,500 mi). See Maintenance Schedule 0 305. Tires are rotated to achieve a more uniform wear for all tires. The first rotation is the most important. Anytime unusual wear is noticed, rotate the tires as soon as possible, check for proper tire inflation pressure, and check for damaged tires or wheels. If the unusual wear continues after the
rotation, check the wheel alignment. See When It Is Time for New Tires 0 275 and Wheel Replacement 0 279.
Use this rotation pattern when rotating the tires. Do not include the compact spare tire in the tire rotation. Adjust the front and rear tires to the recommended inflation pressure on the Tire and Loading Information label after the tires have been rotated. See Tire Pressure 0 268 and Vehicle Load Limits 0 181.
Reset the Tire Pressure Monitor System. See Tire Pressure Monitor Operation 0 270. Check that all wheel nuts are properly tightened. See “Wheel Nut Torque” under Capacities and Specifications 0 318.
{ Warning
Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, a cloth or a paper towel can be used; however, use a scraper or wire brush later to remove all rust or dirt.
Lightly coat the center of the wheel hub with wheel bearing grease after a wheel change or tire rotation to prevent corrosion or rust build-up. Do not get
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grease on the flat wheel mounting surface or on the wheel nuts or bolts.
When It Is Time for New Tires Factors such as maintenance, temperatures, driving speeds, vehicle loading, and road conditions affect the wear rate of the tires.
Treadwear indicators are one way to tell when it is time for new tires. Treadwear indicators appear when the tires have only 1.6 mm (1/16 in)
or less of tread remaining. See Tire Inspection 0 273 and Tire Rotation 0 274. The rubber in tires ages over time. This also applies to the spare tire, if the vehicle has one, even if it is never used. Multiple factors including temperatures, loading conditions, and inflation pressure maintenance affect how fast aging takes place. GM recommends that tires, including the spare if equipped, be replaced after six years, regardless of tread wear. The tire manufacture date is the last four digits of the DOT Tire Identification Number (TIN) which is molded into one side of the tire sidewall. 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. Vehicle Storage Tires age when stored normally mounted on a parked vehicle. Park a vehicle that will be stored for at least a month in a cool, dry, clean area away from direct sunlight to
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slow aging. This area should be free of grease, gasoline, or other substances that can deteriorate rubber. Parking for an extended period can cause flat spots on the tires that may result in vibrations while driving. When storing a vehicle for at least a month, remove the tires or raise the vehicle to reduce the weight from the tires.
Buying New Tires GM has developed and matched specific tires for the vehicle. The original equipment tires installed were designed to meet General Motors Tire Performance Criteria Specification (TPC Spec) system rating. When replacement tires are needed, GM strongly recommends buying tires with the same TPC Spec rating. GM's exclusive TPC Spec system considers over a dozen critical specifications that impact the overall performance of the
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vehicle, including brake system performance, ride and handling, traction control, and tire pressure monitoring performance. GM's TPC Spec number is molded onto the tire's sidewall near the tire size. If the tires have an all-season tread design, the TPC Spec number will be followed by MS for mud and snow. See Tire Sidewall Labeling 0 263. GM recommends replacing worn tires in complete sets of four. Uniform tread depth on all tires will help to maintain the performance of the vehicle. Braking and handling performance may be adversely affected if all the tires are not replaced at the same time. If proper rotation and maintenance have been done, all four tires should wear out at about the same time. See Tire Rotation 0 274. However, if it is
necessary to replace only one axle set of worn tires, place the new tires on the rear axle. 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. Never exceed the winter tires’ maximum speed capability when using winter tires with a lower speed rating.
