2013 Cadillac CTS Owners Manual

Not Used Windshield Wipers Right Low‐Beam (HID Only) Daytime Running Lamps (non‐HID), Left Low‐Beam (HID Only) Right Daytime Running Lamp (HID Only), Right Trailer Turn Signal (Export Only)

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10-46

Vehicle Care

Mini‐Fuses

Usage

Mini‐Fuses

60

61

62

64

65

69

70
71

72

73
74

Instrument Panel Auxiliary Power Outlet Air Quality Sensor, Inside Rear View Mirror, Rear Camera Ignition Steering Wheel Illumination Front Fog Lamps (HID Only) Body Control Module 6, Body Control Module 7
Emissions 1
Even Ignition Coils Engine Control Module Emissions 2
Odd Ignition Coils

75

76
77
78
79
80
81

J-Case Fuses

10

Usage Transmission Output Speed Sensor, Brake Vacuum Relay Spare Spare Spare Spare Spare Spare

Usage

Cooling Fan 2
Cooling Fan 1
Starter Brake Vacuum Pump Antilock Brake System Motor

J-Case Fuses

Usage

13

14

15
16
17

18

37

Not Used Electric Parking Brake Not Used Not Used Blower Motor Transmission Control Module Battery Trailer (Export Only)

Relays

Usage Cooling Fan 2
Cooling Fan 1
Starter Rear Window Defogger Instrument Panel Auxiliary Power Outlet

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Vehicle Care

10-47

Relays

Usage

Relays

Usage

49

53
63
66
67

68

Daytime Running Lamps (Non‐HID), Low‐Beam Headlamps (HID) Not Used Main Ignition Windshield Wipers Powertrain Windshield Wipers High Speed

Engine Compartment Fuse Block (CTS-V Wagon) The underhood fuse block is on the left side of the engine compartment.

12

20

21

32

39

42

44

45

48

Horn Headlamp Washer (HID Only) Cooling Fan (Series/ Parallel) Air Conditioning Compressor Clutch Not Used Right Daytime Running Lamp, Trailer Turn Signal Low‐Beam (non‐ HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) Front Fog Lamps (HID Only) High‐Beam Headlamps

Lift the fuse block cover to access the fuses. The vehicle may not be equipped with all of the fuses and relays shown. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

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10-48

Vehicle Care

Mini-Fuses

27

28
29

30

31
33

34

35

36

38

40

41

Usage Body Control Module 4
Navigation Motor Not Used Transmission Control Module Battery Horn Not Used Pedestrian Protection System (Export Only) Body Control Module 3
Body Control Module 2
Headlamp Washer (HID Only) Not Used Air Conditioning Compressor Clutch

Mini-Fuses

Usage

Mini-Fuses

11

19

22
23

Not Used Antilock Braking System (ABS) Display Sunroof

24

25

26

Usage Body Control Module 1
Automatic Forward Lighting System (HID Only) Body Control Module 5

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Mini-Fuses

43

46

47

50

51

52

54

55
56

Usage Left Daytime Running Lamp (HID) Left High-Beam Headlamp Right High-Beam Headlamp Right Daytime Running Lamp Airbag System Ignition Switch Engine Control Module Ignition, Transmission Control Module Ignition Power Moding (Immobilizer Module, Ignition Switch) Intercooler Pump Windshield Wipers

Vehicle Care

10-49

Mini-Fuses

Usage

Mini-Fuses

Usage

57

58

59

60

61

62

64

65

69

Right Low-Beam (HID Only) Left Low-Beam (HID Only) Right Daytime Running Lamp (HID Only) Instrument Panel Auxiliary Power Outlet Air Quality Sensor, Inside Rear View Mirror, Rear Camera Ignition Steering Wheel Illumination Front Fog Lamps (HID Only) Body Control Module 6, Body Control Module 7

70
71
72
73

74

75
76
77
78
79
80
81

Emissions 1
Even Ignition Coils Odd Ignition Coils Emissions 2
Engine Control Module Not Used Spare Spare Spare Spare Spare Spare

J-Case Fuses

Usage

Cooling Fan 2
Cooling Fan 1
Starter

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10-50

Vehicle Care

Usage

Relays

J-Case Fuses

10

13

14

15
16
17

18

37

Not Used Antilock Brake System Motor Not Used Electric Parking Brake Not Used Not Used Blower Motor Rear Window Defogger Magnetic Ride/ Suspension Control

Relays

Usage Cooling Fan 2
Cooling Fan 1
Starter

Usage Rear Window Defogger Instrument Panel Auxiliary Power Outlet Horn Headlamp Washer (HID Only) Cooling Fan (Series/ Parallel) Air Conditioning Compressor Clutch Not Used Right Daytime Running Lamp Left Daytime Running Lamp (HID) Front Fog Lamps (HID Only) High-Beam Headlamps

Relays

Usage

49

53
63
66
67

68

Low-Beam Headlamps (HID) Not Used Main Ignition Windshield Wipers Powertrain Windshield Wipers High Speed

Rear Compartment Fuse Block (CTS Coupe and Sedan) The rear compartment fuse block is on top of the battery, on the right side of the trunk. The battery access door must be removed to access the fuse block. The vehicle may not be equipped with all of the fuses, relays, and features shown.

12

20

21

32

39

42

44

45

48

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Vehicle Care

10-51

Relays

11

12
13

Usage Sedan Trunk Release/Coupe Rear Fog (Export Only) Side Marker Lamps Left Position Lamps

Mini-Fuses

Usage

14
15
16

17

18

19

20

21

Right Position Lamp Left Position Lamp Door Lock Console/Auxiliary Power Outlet Rear Fog/Export Body Control Module (Export Only) Trunk Release Easy Entry Seats (Coupe Only) Sunroof

Relays

Usage

Relays

Usage

Stop Lamps (Export Only) Door Lock Door Unlock Fuel Door Unlock (Export Only)

10

Right Position Lamp (Export Only) Console/Auxiliary Power Outlet

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10-52

Vehicle Care

Mini-Fuses

Usage

Mini-Fuses

Usage

22

23

24

25

26

27

28

29

30
31

33

Right Position Lamp (Export Only) Regulated Voltage Control Sensor Audio System (Radio) Airbag System Remote Keyless Entry/PASS-Key® Theft Deterrent Module Audio Speakers/ Subwoofer OnStar® System (If Equipped) Engine Control Module Canister Vent Fuel Pump Stop Lamps (Export Only)

Theft Deterrent System/Universal Garage Door Opener Memory Seat Module Passenger Door Module Side Blind Zone Alert (Coupe Only) Amplifier

34

35

36

38

39

Circuit

Breakers

Usage

Driver Power Seat Switch Passenger Power Seat Switch Power Windows Power Steering Column

Circuit

Breakers

Usage

32

37

Left Rear Window Switch Right Rear Window Switch

Rear Compartment Fuse Block (CTS-V Coupe and Sedan) The rear compartment fuse block is on top of the battery, on the right side of the trunk. The battery access door must be removed to access the fuse block. The vehicle may not be equipped with all of the fuses, relays, and features shown.

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Vehicle Care

10-53

Relays

11

12
13

Usage Sedan Trunk Release/Coupe Rear Fog (Export Only) Side Marker Lamps Left Position Lamps

Mini-Fuses

Usage

14
15
16

17

18

19

20

21

Right Position Lamp Left Position Lamp Door Lock Console/Auxiliary Power Outlet Rear Fog/Export Body Control Module (Export Only) Trunk Release Easy Entry Seats (Coupe Only) Fuel Pump

Relays

Usage

Relays

Usage

Stop Lamps (Export Only) Door Lock Door Unlock Fuel Door Unlock (Export Only)

10

Right Position Lamp (Export Only) Console/Auxiliary Power Outlet

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10-54

Vehicle Care

Mini-Fuses

Usage

Mini-Fuses

Usage

22

23

24

25

26

27

28

29

30

31

33

Right Position Lamp (Export Only) Regulated Voltage Control Sensor Audio System (Radio) Airbag System Remote Keyless Entry/PASS-Key® Theft Deterrent Module Audio Speakers/ Subwoofer OnStar® System (If Equipped) Engine Control Module Canister Vent Rear Differential Cooling Pump Stop Lamps (Export Only)

Theft Deterrent System/Universal Garage Door Opener Memory Seat Module Passenger Door Module Side Blind Zone Alert (Coupe Only) Amplifier

34

35

36

38

39

Circuit

Breakers

Usage

Driver Power Seat Switch Passenger Power Seat Switch Power Windows Power Steering Column

Circuit

Breakers

Usage

32

37

Left Rear Window Switch Right Rear Window Switch

Rear Compartment Fuse Block (CTS Wagon) This fuse block is on the right side of the vehicle, behind the trim panel in the rear compartment. The vehicle may not be equipped with all of the fuses, relays, and features shown.

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Vehicle Care

10-55

Relays

Usage

11
12
13

Not Used Side Marker Lamps Left Position Lamps

Mini‐Fuses

Usage

14
15
16

17

18

19

20

21

22

Right Position Lamp Left Position Lamp Door Lock Console/Auxiliary Power Outlet Rear Fog/Export Body Control Module (Export Only) Rear Windshield Wiper/Washer Windshield Washer Pump Sunroof Right Position Lamp (Export Only)

Relays

Usage

Relays

Usage

Stop Lamps (Export Only) Door Lock Door Unlock

10

Fuel Door Unlock (Export Only) Right Position Lamp (Export Only) Console/Auxiliary Power Outlet

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10-56

Vehicle Care

Mini‐Fuses

Usage

Mini‐Fuses

Usage

23

24

25

26

27

28

29

30
31

33

Regulated Voltage Control Sensor Audio System (Radio) Airbag System Remote Keyless Entry/PASS‐Key® Theft Deterrent Module Audio Speakers/ Subwoofer OnStar® System (If Equipped) Engine Control Module Canister Vent Fuel Pump Stop Lamps (Export Only)

Theft Deterrent System/Universal Garage Door Opener Memory Seat Module Passenger Door Module Rear Auxiliary Power Outlet Amplifier

34

35

36

38

39

Circuit

Breakers

Usage

Driver Power Seat Switch Passenger Power Seat Switch Power Windows Power Steering Column

Circuit

Breakers

Usage

32

37

Left Rear Window Switch Right Rear Window Switch

Rear Compartment Fuse Block (CTS-V Wagon) The rear compartment fuse block is on the passenger side of the vehicle, behind the trim panel in the rear compartment. The vehicle may not be equipped with all of the fuses and relays shown.

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Black plate (57,1)

Vehicle Care

10-57

Relays

Usage

12
13

Side Marker Lamps Left Position Lamps

Mini-Fuses

Usage

14
15
16

17

18

19

20

21

22

Right Position Lamp Left Position Lamp Door Lock Console/Auxiliary Power Outlet Rear Fog/Export Body Control Module (Export Only) Rear Windshield Wiper/Washer Windshield Washer Pump Fuel Pump Right Position Lamp (Export Only)

Relays

Usage

Relays

Usage

Stop Lamps (Export Only) Door Lock Door Unlock Fuel Door Unlock (Export Only)

10

11

Right Position Lamp (Export Only) Console/Auxiliary Power Outlet Not Used

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Black plate (58,1)

Circuit

Breakers

Usage

32

37

Left Rear Window Switch Right Rear Window Switch

10-58

Vehicle Care

Mini-Fuses

Usage

Mini-Fuses

Usage

23

24

25

26

27

28

29

30

31

33

Regulated Voltage Control Sensor Audio System (Radio) Airbag System Remote Keyless Entry/PASS-Key® Theft Deterrent Module Audio Speakers/ Subwoofer OnStar® System Engine Control Module Canister Vent Rear Differential Cooling Pump Stop Lamps (Export Only)

Theft Deterrent System/Universal Garage Door Opener Memory Seat Module Passenger Door Module Rear Auxiliary Power Outlet Amplifier

34

35

36

38

39

Circuit

Breakers

Usage

Driver Power Seat Switch Passenger Power Seat Switch Power Windows Power Steering Column

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Wheels and Tires

Tires Every new GM vehicle has high-quality tires made by a leading tire manufacturer. See the warranty manual for information regarding the tire warranty and where to get service. For additional information refer to the tire manufacturer.

{ WARNING . Poorly maintained and

improperly used tires are dangerous.

. Overloading the tires can

cause overheating as a result of too much flexing. There could be a blowout and a serious crash. See Vehicle Load Limits on page 9‑10.

(Continued)

Vehicle Care

10-59

WARNING (CONTINUED)

WARNING (CONTINUED)

. Underinflated tires pose the same danger as overloaded tires. The resulting crash could cause serious injury. Check all tires frequently to maintain the recommended pressure. Tire pressure should be checked when the tires are cold.

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

. Worn or old tires can cause a

crash. If the tread is badly worn, replace them.

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

(Continued)

. Improperly repaired tires can

cause a crash. Only the dealer or an authorized tire service center should repair, replace, dismount, and mount the tires.

. Do not spin the tires in

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

See Tire Pressure for High-Speed Operation on page 10‑68 for inflation pressure adjustment for high-speed driving.

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10-60

Vehicle Care

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 10‑60.

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 10‑76. 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.

Low-Profile Tires If the vehicle has P235/50R18, 245/45ZR19, P245/45R19, 255/40ZR19, P265/45R18, 275/40ZR19 or 285/35ZR19
size tires, they are classified as low‐profile tires. These tires are designed for very responsive driving on wet or dry pavement, however, may produce more road noise and tend to wear faster.

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Black plate (61,1)

noise levels. In severe winter climates where snowfall may be significant, these tires may be found to provide less traction.

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 10‑60.

Notice: 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.

Summer Performance Tires Many General Motors high performance models come factory‐equipped with tires that are optimized for maximum dry and wet road performance while still retaining satisfactory tread life, excellent durability, and low

Vehicle Care

10-61

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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10-62

Vehicle Care

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.

(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 10‑78. (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

10-63

information on tire pressure and inflation see Tire Pressure on page 10‑67. (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.

spare tire, see Compact Spare Tire on page 10‑100 and If a Tire Goes Flat on page 10‑81. (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

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

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10-64

Vehicle Care

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.

(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.

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.

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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 10‑67. 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 9‑10. GAWR FRT: Gross Axle Weight Rating for the front axle. See Vehicle Load Limits on page 9‑10.

Vehicle Care

10-65

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.

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10-66

Vehicle Care

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 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. 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 10‑67 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 10‑75.

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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 10‑78. 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 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. See “Tire and Loading Information Label” under Vehicle Load Limits on page 9‑10.

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.

Vehicle Care

10-67

. 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.

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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10-68

Vehicle Care

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 10‑100.

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. 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.

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Vehicles with 255/40ZR19 or 285/35ZR19 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 300 kPa (44 psi), whichever is lower. See the example following. 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 10‑67. Example: 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. For this example, set the inflation pressure for high‐speed driving at 300 kPa (44 psi).

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

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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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Vehicle Care

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 10‑70.

Federal Communications Commission (FCC) Rules and with Industry Canada Standards See Radio Frequency Statement on page 13‑20 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, if the vehicle has one. The TPMS sensors monitor the air pressure in the tires and transmits the tire pressure readings to a receiver located in the vehicle.

When a low tire pressure condition is detected, the TPMS illuminates the low tire pressure warning light located 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 loading information label. See Vehicle Load Limits on page 9‑10. A message to check the pressure in a specific tire displays in the DIC display screen. The low tire pressure warning light and the DIC warning message come at each ignition cycle until the tires are inflated to the correct inflation pressure. Using the Driver Information Center (DIC), tire pressure levels can be viewed. For additional information and details about the DIC operation and

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displays see Driver Information Center (DIC) on page 5‑27 and Tire Messages on page 5‑43. 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. The Tire and Loading Information label 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 10‑67. The TPMS can warn about a low tire pressure condition but it does not replace normal tire maintenance. See Tire Inspection on page 10‑73, Tire Rotation on page 10‑73 and Tires on page 10‑59.

Notice: 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. Factory-installed Tire Inflator Kits use a GM approved liquid tire sealant. Using non-approved tire sealants could damage the TPMS sensors. See Tire Sealant and Compressor Kit on page 10‑83 for information regarding the inflator kit materials and instructions. 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

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for the remainder of the ignition cycle. A DIC warning message also displays. The malfunction light and DIC warning message come on at