2015 Chevrolet Colorado Owners Manual

Never dispose of engine coolant by putting it in the trash, or by pouring it on the ground, or into sewers, streams or, bodies of water. Have the coolant changed by an authorized service center, familiar with legal requirements regarding used coolant disposal. This will help protect the environment and your health. Checking Coolant The vehicle must be on a level surface when checking the coolant level.

Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down. If coolant is visible but the coolant level is not at or above the mark pointed to, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant. Be sure the cooling system is cool before this is done. If no coolant is visible in the coolant surge tank, add coolant as follows: How to Add Coolant to the Coolant Surge Tank

{ Warning

You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol and it will burn if the engine parts are hot enough. Do not spill coolant on a hot engine.

Vehicle Care

10-17

{ Caution

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

{ Warning

Steam and scalding liquids from a hot cooling system can blow out and burn you badly. Never turn the cap when the cooling system, including the surge tank pressure cap, is hot. Wait for the cooling system and surge tank pressure cap to cool.

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10-18

Vehicle Care

The coolant surge tank pressure cap can be removed when the cooling system, including the surge tank pressure cap and upper radiator hose, is no longer hot. 1. Turn the pressure cap slowly counterclockwise. If a hiss is heard, wait for that to stop. A hiss means there is still some pressure left.

2. Keep turning the cap and

remove it.

reaches the mark pointed to on the front of the coolant surge tank.

5. Replace the cap tightly. { Caution

If the pressure cap is not tightly installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured.

Engine Overheating The vehicle has an engine coolant temperature gauge on the instrument cluster to warn of engine overheating. See Engine Coolant Temperature Gauge on page 5-10.

{ Caution

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

3. Fill the coolant surge tank with the proper mixture to the mark pointed to on the front of the coolant surge tank.

4. With the coolant surge tank cap off, start the engine and let it run until the upper radiator hose starts getting hot. Watch out for the engine cooling fan. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower, add more of the proper mixture to the coolant surge tank until the level

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If the decision is made not to lift the hood when this warning appears, get service help right away. See Roadside Assistance Program on page 13-5. If the decision is made to lift the hood, make sure the vehicle is parked on a level surface. Then check to see if the engine cooling fan is running. If the engine is overheating, the fan should be running. If it is not, do not continue to run the engine and have the vehicle serviced. If Steam Is Coming from the Engine Compartment { Warning

Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Just turn it off and get everyone away from

(Continued)

Warning (Continued)

the vehicle until it cools down. Wait until there is no sign of steam or coolant before you open the hood. If you keep driving when the engine is overheated, the liquids in it can catch fire. You or others could be badly burned. Stop the engine if it overheats, and get out of the vehicle until the engine is cool.

If No Steam Is Coming from the Engine Compartment If an engine overheat warning is displayed but no steam can be seen or heard, the problem may not be too serious. Sometimes the engine can get a little too hot when the vehicle: . Climbs a long hill on a hot day. . Stops after high-speed driving. Idles for long periods in traffic.

Vehicle Care

10-19

If the overheat warning is displayed with no sign of steam: 1. Turn the air conditioning off. 2. Turn the heater on to the highest

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

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

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

If the engine coolant temperature gauge is no longer in the overheat zone, the vehicle can be driven. Continue to drive the vehicle slowly for about 10 minutes. Keep a safe distance from the vehicle in front. If the warning does not come back on, continue to drive normally and have the cooling system checked for proper fill and function. If the warning continues, pull over, stop, and park the vehicle right away.

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10-20

Vehicle Care

If there is no sign of steam, idle the engine for three minutes while parked. If the warning is still displayed, turn off the engine until it cools down.

Engine Fan The vehicle has an electric cooling fan. The fan may be heard spinning at low speed during most everyday driving. The fan may turn off if no cooling is required. Under heavy vehicle loading, trailer towing, high outside temperatures, or operation of the air conditioning system, the fan may change to high speed and an increase in fan noise may be heard. This is normal and indicates that the cooling system is functioning properly. The fan will change to low speed when additional cooling is no longer required. The electric engine cooling fan may run after the engine has been turned off. This is normal and no service is required.

Washer Fluid

What to Use When windshield washer fluid needs to be added, be sure to read the manufacturer's instructions before use. Use a fluid that has sufficient protection against freezing in an area where the temperature may fall below freezing. Adding Washer Fluid

Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 10-5 for reservoir location.

{ Caution

. Do not use engine coolant

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

. Do not mix water with

ready-to-use washer fluid. Water can cause the solution to freeze and damage the washer fluid tank and other parts of the washer system.

. When using concentrated

washer fluid, follow the manufacturer instructions for adding water.

. Fill the washer fluid tank only

three-quarters full when it is very cold. This allows for fluid expansion if freezing occurs, which could damage the tank if it is completely full.

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Vehicle Care

10-21

performance expected can change in many other ways if the wrong replacement brake parts are installed or parts are improperly installed.

Brake Fluid

The brake master cylinder reservoir is filled with DOT 3 brake fluid. See Engine Compartment Overview on page 10-5 for the location of the reservoir.

Brakes Disc brake pads have built-in wear indicators that make a high-pitched warning sound when the brake pads are worn and new pads are needed. The sound can come and go or be heard all the time the vehicle is moving, except when applying the brake pedal firmly.

{ Warning

The brake wear warning sound means that soon the brakes will not work well. That could lead to a crash. When the brake wear warning sound is heard, have the vehicle serviced.

{ Caution

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

Some driving conditions or climates can cause a brake squeal when the brakes are first applied or lightly applied. This does not mean something is wrong with the brakes. Properly torqued wheel nuts are necessary to help prevent brake pulsation. When tires are rotated, inspect brake pads for wear and evenly tighten wheel nuts in the proper sequence to torque specifications in Capacities and Specifications on page 12-2. Brake linings should always be replaced as complete axle sets. Brake Pedal Travel See your dealer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign that brake service may be required. Replacing Brake System Parts Always replace brake system parts with new, approved replacement parts. If this is not done, the brakes may not work properly. The braking

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Vehicle Care

There are only two reasons why the brake fluid level in the reservoir might go down:

installed. Add or remove brake fluid, as necessary, only when work is done on the brake hydraulic system.

The brake fluid level goes down because of normal brake lining wear. When new linings are installed, the fluid level goes back up. When the brake fluid falls to a low level, the brake warning light comes on. See Brake System Warning Light on page 5-16.

. A fluid leak in the brake

hydraulic system can also cause a low fluid level. Have the brake hydraulic system fixed, since a leak means that sooner or later the brakes will not work well.

Do not top off the brake fluid. Adding fluid does not correct a leak. If fluid is added when the linings are worn, there will be too much fluid when new brake linings are

{ 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. See “Checking Brake Fluid” in this section.

Refer to the Maintenance Schedule to determine when to check the brake fluid. See Maintenance Schedule on page 11-3.

Checking Brake Fluid Check brake fluid by looking at the brake fluid reservoir. See Engine Compartment Overview on page 10-5.

The fluid level should be above the minimum mark. If it is not, have the brake hydraulic system checked to see if there is a leak. After work is done on the brake hydraulic system, make sure the level is above the minimum mark but not over the MAX mark.

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

{ Warning

With the wrong kind of fluid in the brake hydraulic system, the brakes might not work well. This could cause a crash. Always use the proper brake fluid.

{ Caution

. Using the wrong fluid can

badly damage brake hydraulic system parts. For example, just a few drops of mineral-based oil, such as engine oil, in the brake hydraulic system can damage brake hydraulic system parts so badly that they will have to be replaced. Do not let someone put in the wrong kind of fluid.

. If brake fluid is spilled on the

vehicle's painted surfaces, the paint finish can be damaged. Be careful not to spill brake fluid on the vehicle. If you do, wash it off immediately.

Vehicle Care

10-23

Battery The original equipment battery is maintenance free. Do not remove the cap and do not add fluid. Refer to the replacement number shown on the original battery label when a new battery is needed. See Engine Compartment Overview on page 10-5 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.

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Vehicle Care

Vehicle Storage

{ Warning

Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 10-74 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.

Four-Wheel Drive

Transfer Case

When to Check Lubricant Refer to Maintenance Schedule on page 11-3 to determine when to check the lubricant.

How to Check Lubricant

Electric Shift Transfer Case

1. Drain Plug 2. Fill Plug

To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the fill plug (2) hole, located on the transfer case, some lubricant will need to be added. Add enough lubricant to raise the level to the bottom of the fill plug (2) hole. Use care not to overtighten the plug.

When to Change Lubricant Refer to Maintenance Schedule on page 11-3 to determine how often to change the lubricant.

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

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Front Axle

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

How to Check Lubricant

Front Axle for 2.5L Shown, Front

Axle for 3.6L Similar

1. Drain Plug

2. Fill Plug

To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the fill plug (2) hole, located on the front axle, some lubricant will need to be added. Add enough lubricant to raise the level to the bottom of the fill plug (2) hole. Use care not to overtighten the plug.

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

Rear Axle

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

Vehicle Care

10-25

All axle assemblies are filled by volume of fluid during production. They are not filled to reach a certain level. When checking the fluid level on any axle, variations in the readings can be caused by factory fill differences between the minimum and the maximum fluid volume. Also, if a vehicle has just been driven before checking the fluid level, it may appear lower than normal because fluid has traveled out along the axle tubes and has not drained back to the sump area. Therefore, a reading taken five minutes after the vehicle has been driven will appear to have a lower fluid level than a vehicle that has been stationary for an hour or two. The rear axle assembly must be supported on a flat, level surface to get a true reading.

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10-26

Vehicle Care

How to Check Lubricant

Rear Axle for 2.5L Shown, Rear

Axle for 3.6L Similar

1. Drain Plug 2. Fill Plug

To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the fill plug (2) hole, located on the rear axle, some lubricant will need to be added. Add enough lubricant

to raise the level to the bottom of the fill plug (2) hole. Use care not to overtighten the plug.

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

Starter Switch Check

{ Warning When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be

sure there is enough room around the vehicle.

2. Apply both the parking brake

and the regular brake. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts.

3. For automatic transmission

vehicles, 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. For manual transmission vehicles, put the shift lever in Neutral, push the clutch pedal down halfway, and try to start the engine. The vehicle should start only when the clutch pedal is pushed down all the way to the floor. If the vehicle starts when the clutch pedal is not pushed all the way down, contact your dealer for service.

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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. Apply the parking brake. 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.

Ignition Transmission Lock Check While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position.

For automatic transmission vehicles, the ignition should turn to LOCK/OFF only when the shift lever is in P (Park). For manual transmission vehicles, the ignition should turn to LOCK/OFF only when you press the key release button.

On all vehicles, the ignition key should come out only in LOCK/OFF. Contact your dealer if service is required.

Vehicle Care

10-27

Park Brake and P (Park) Mechanism Check { Warning

When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move.

Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake.

To check the parking brake's holding ability: With the engine running and the transmission in N (Neutral), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only.

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10-28

Vehicle Care

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. Replacement blades come in different types and are removed in different ways. For proper windshield wiper blade length and type, see Maintenance Replacement Parts on page 11-15.

{ Caution

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

To replace the windshield wiper blade: 1. Pull the windshield wiper assembly away from the windshield.

2. Press the button (2) in the

middle of the wiper arm connector, and pull the wiper blade away from the arm connector (1).

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

blade replacement.

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Headlamp Aiming Headlamp aim has been preset and should need no further adjustment. If the vehicle is damaged in a crash, the headlamp aim may be affected. If adjustment to the headlamps is necessary, see your dealer.

Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10-32. 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

10-29

Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps

Headlamp 1. Open the hood. 2.

If replacing a bulb on the passenger side, remove the first air baffle push pin.

3. Remove the headlamp bulb

cover by turning it counterclockwise.

4. Turn the bulb socket

counterclockwise to remove it from the headlamp assembly and pull it straight out.

5. Unplug the electrical connector

from the old bulb by releasing the clip on the bulb socket.

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10-30

Vehicle Care

Turn Signal/Sidemarker/ Parking Lamp 1. Open the hood. 2.

If replacing a bulb on the passenger side, remove the first air baffle push pin.

3. Turn the bulb socket

counterclockwise to remove it from the headlamp assembly and pull it straight out.

4. Remove the bulb by pulling it straight out of the bulb socket.

Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps 1. Open the tailgate.

4. Pull the rear lamp assembly

straight back to remove it from the vehicle.

5. Turn the bulb socket

counterclockwise.

6. Pull the bulb straight out from

the socket.

7. Replace the bulb, then insert the

bulb socket into the rear lamp assembly and turn clockwise.

2. Remove the two rear lamp

assembly screws.

3. Pull the rear lamp assembly

outboard away from the box side until the retainers release. There will be a noise when the retainers release.

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Vehicle Care

10-31

To replace one of these bulbs:

Center High-Mounted Stoplamp (CHMSL) and Cargo Lamp

9. Verify the retainer ring is in the proper position. If the retainer ring is out of position, it will not engage. Reset the retainer by pulling it forward with a tool.

10. Push the rear lamp assembly

straight in until it is seated against the vehicle.

11. Make sure the rear lamp

assembly is flush with the box side.

12. Reinstall the two rear lamp

assembly screws.

1. Cargo Lamp Bulbs 2. Center High-Mounted

Stoplamp (CHMSL) Bulb

1. Remove the two screws and lift

off the lamp assembly.

2. Turn the bulb socket

counterclockwise and pull it straight out.

3. Pull the bulb straight out from

the socket.

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Vehicle Care

Replacement Bulbs

Exterior Lamp

Back-up Lamp Back-up Lamp* Cargo Lamp Center High-Mounted Stoplamp (CHMSL) Front Turn Signal Lamp and Parking Lamp Sidemarker Lamp High-Beam Headlamp

Bulb

Number

921 (W16W)

1156

921 (W16W)

921LL

7444NA-T

W5W LL 9005 LL

Bulb

Number H11 LL

7443 W21/ 5W LL-T

1157

Exterior Lamp

Low-Beam Headlamp Stoplamp/Taillamp/ Turn Signal Lamp Stoplamp/Turn Signal Lamp/ Taillamp* * Chassis Cab Models

For replacement bulbs not listed here, contact your dealer.

Electrical System

Electrical System Overload The vehicle has fuses to protect against an electrical system overload. Fuses also 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, there is a fuse puller in the Engine Compartment Fuse Block. Replace the fuse as soon as possible with one of the same amperage rating. 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.

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Vehicle Care

10-33

Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating. If a fuse goes out, replace the fuse as soon as you can.

Engine Compartment Fuse Block The engine compartment fuse block is in the engine compartment, on the driver side of the vehicle.

Lift the cover to access the fuse block.

{ Caution

Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

A fuse puller is available inside this fuse block.

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 The wiring circuits in the vehicle are protected from short circuits by fuses. This greatly reduces the chance of fires caused by electrical problems.

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Vehicle Care

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

Mini Fuses

(2 pin)

Usage

F01

F02

F03

F04
F05

F07
F08

F09

F10

F11

Traction Control Module Power Engine Control Module Power Air Conditioning Compressor Clutch Not Used Fuel Module Ignition Cargo Lamp Fuel Injectors - Even Fuel Injectors - Odd Engine Control Module Miscellaneous 1
Ignition

Vehicle Care

10-35

Mini Fuses

(2 pin)

Usage

Mini Fuses

(2 pin)

Usage

F13

F14
F15
F16
F17
F18
F19
F20
F23
F29
F30

F31
F32

F33

Traction Control Module Not Used Not Used Not Used Front Axle Actuator Not Used Aeroshutters Not Used Not Used Not Used Heated Seat Power 1
Not Used Heated Seat Power 2
Body Control Module 3

F34

F35
F36

F37

F38

F39
F40
F46
F47

F48

F49
F50
F51

Fuel System Control Module Not Used Center High Mounted Stop Lamp Right High-Beam Headlamp Left High-Beam Headlamp Not Used Not Used Not Used Miscellaneous 2
Ignition Fog Lamps (If Equipped) Not Used Trailer Park Lamps Horn

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Vehicle Care

Mini Fuses

(2 pin)

Usage

Mini Fuses

(2 pin)

Usage

F52
F53
F54
F55
F56
F57
F58
F60
F61
F62

F63
F64

F65

Not Used Not Used Not Used Not Used Washer Pump Not Used Not Used Mirrors Defogger Not Used Canister Vent Solenoid Not Used Trailer Reverse Lamp Left Trailer Stop/ Turn Lamps

Right Trailer Stop/ Turn Lamps Electric Power Steering Not Used Battery Regulated Voltage Control Not Used Not Used

Usage

F66

F67

F68
F69

F70
F71

J-Case

Fuses (Low

Profile)

F06
F12
F21
F22

Wipers Starter Front Blower Antilock Brake System Valves

J-Case

Fuses (Low

Profile)

Usage

F24
F25

F26

F27

F28

F41
F42
F43
F44
F45

F59

Trailer Transfer Case Electronic Control Antilock Brake System Pump Trailer Brake Control Module Rear Window Defogger Not Used Not Used Cooling Fan Not Used Brake Vacuum Pump Not Used

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Vehicle Care

10-37

Usage

Mini Relays

Usage

K07
K15
K17

Powertrain Run/Crank Rear Window Defogger

Solid State

Usage

Relay K16

Not Used

Not Used Not Used Not Used Center High Mounted Stop Lamp Not Used Vacuum Pump Park Lamps

Micro Relays

K08
K09
K10
K11

K12
K13
K14

Midi Fuses

Usage

F72
F73
F74
F75

Micro Relays

K01

K02
K03
K04
K05
K06

Not Used Not Used Generator Not Used

Usage

Air Conditioning Compressor Clutch Starter Not Used Wipers Speed Wipers Control Cargo Lamp

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Vehicle Care

Instrument Panel Fuse Block

The instrument panel fuse block is behind the passenger side cowl side trim panel. Remove the plastic nut at the front of the cover, then pull the cover away from the trim panel to access the fuse block.

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

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Micro Fuse (2 Pin)

Usage

Micro Fuse (2 Pin)

Usage

F01

F04

F05

F08

F09
F10
F11

F12
F14
F15

F16
F17

Body Control Module 1
Steering Wheel Controls Body Control Module 2
Mirror Window Module Instrument Cluster Not Used Body Control Module 8
Not Used Radio/HMI Body Control Module 6
Not Used Body Control Module 4

F19
F20
F21
F22
F24

F25

F26
F27
F29
F31
F32

F34
F35

Not Used Amplifier (if equipped) Not Used Not Used Heating, Ventilation, and Air Conditioning Ignition Body Control Module 7
Not Used Not Used Miscellaneous Ignition Front Camera Steering Wheel Controls Backlighting Not Used Park, Reverse, Neutral, Drive, Low

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Micro Fuse (2 Pin)

F36

F38

Micro Fuse (3 Pin)

F13

F18
F23

F28

F33

Usage

Discrete Logic Ignition Sensor Not Used

Usage

OnStar/Heating, Ventilation, and Air Conditioning Airbag Data Link Connector/USDB Instrument Panel/ Sensing and Diagnostic Module Ignition Not Used

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Micro J-Case Fuse F02
F03
F06
F07
F39

F41

F42
F43
F45
F46

Usage

Not Used Not Used Not Used Not Used Auxiliary Power Outlet 2
Auxiliary Power Outlet 1/Lighter Left Power Window Driver Power Seat Right Power Window Passenger Power Seat

J-Case Fuse F30
F40
F44

Not Used Auxiliary Power Outlet Auxiliary Power Outlet

Mini Fuse (2 Pins)

Usage

F37

Not Used

Micro Relay

K1

K2

Usage

Retained Accessory Power/Accessory Run/Crank

Usage

Wheels and Tires

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

{ Warning

. Poorly maintained and

improperly used tires are dangerous.

. Overloading the tires can

cause overheating as a result of too much flexing. There could be a blowout

(Continued)

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Warning (Continued)

Warning (Continued)

and a serious crash. See Vehicle Load Limits on page 9-14.

. Underinflated tires pose

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

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

(Continued)

. Worn or old tires can

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

. Replace any tires that

have been damaged by impacts with potholes, curbs, etc.

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

. Do not spin the tires in

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

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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 10-42.

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Winter Tires This vehicle was not originally equipped with winter tires. Winter tires are designed for increased traction on snow and ice-covered roads. Consider installing winter tires on the vehicle if frequent driving on ice or snow covered roads is expected. See your dealer for details regarding winter tire availability and proper tire selection. Also, see Buying New Tires on page 10-56. 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.

All-Terrain Tires This vehicle may have all-terrain tires. These tires provide good performance on most road surfaces, weather conditions, and for off-road driving. See Off-Road Driving on page 9-5. The tread pattern on these tires may wear more quickly than other tires. Consider rotating the tires more frequently than at 12 000 km (7,500 mi) intervals if irregular wear is noted when the tires are inspected. See Tire Inspection on page 10-53.

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. (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

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performance factors: treadwear, traction, and temperature resistance. For more information see Uniform Tire Quality Grading on page 10-58. (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.

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(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 10-72 and If a Tire Goes Flat on page 10-61. (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 10-48. (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

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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

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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)

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before a tire has built up heat from driving. See Tire Pressure on page 10-48. 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 9-14.

GAWR FRT: Gross Axle Weight Rating for the front axle. See Vehicle Load Limits on page 9-14. GAWR RR: Gross Axle Weight Rating for the rear axle. See Vehicle Load Limits on page 9-14. Intended Outboard Sidewall: The side of an asymmetrical tire that must always face outward when mounted on a vehicle. Kilopascal (kPa): The metric unit for air pressure. Light Truck (LT-Metric) Tire: A tire used on light duty trucks and some multipurpose passenger vehicles. Load Index: An assigned number ranging from 1 to 279
that corresponds to the load carrying capacity of a tire.

Maximum Inflation Pressure: The maximum air pressure to which a cold tire can be inflated. The maximum air pressure is molded onto the sidewall. Maximum Load Rating: The load rating for a tire at the maximum permissible inflation pressure for that tire. Maximum Loaded Vehicle Weight: The sum of curb weight, accessory weight, vehicle capacity weight, and production options weight. Normal Occupant Weight: The number of occupants a vehicle is designed to seat multiplied by 68 kg (150 lb). See Vehicle Load Limits on page 9-14. Occupant Distribution: Designated seating positions. Outward Facing Sidewall: The side of an asymmetrical tire that has a particular side that faces

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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 10-48 and Vehicle Load Limits on page 9-14.

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 on page 10-55.