2012 Chevrolet Colorado Owners Manual

button until the TRAC OFF and STAB SYS OFF messages come on the DIC and the StabiliTrak Off light comes on the instrument panel. To turn TCS and StabiliTrak back on, press and release the TCS/ StabiliTrak button. When the TCS or StabiliTrak system is turned off, the StabiliTrak Off light and the appropriate TRAC OFF or STAB SYS OFF message will be displayed on the DIC. The vehicle will still have brake-traction control when TCS or StabiliTrak is off, but will not be able to use the engine speed management system. The TCS/StabiliTrak light flashes when either system is actively working. See Traction Control System (TCS) on page 9‑47 for more information.

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9-50

Driving and Operating

Limited-Slip Rear Axle Vehicles with a limited-slip rear axle can give more traction on snow, mud, ice, sand or gravel. It works like a standard axle most of the time, but when traction is low, this feature allows the drive wheel with the most traction to move the vehicle.

Cruise Control With cruise control, a speed of about 40 km/h (25 mph) or more can be maintained without keeping your foot on the accelerator. Cruise control does not work at speeds below about 40 km/h (25 mph). If the brakes are applied, the cruise control shuts off.

{ WARNING

Cruise control can be dangerous where you cannot drive safely at a steady speed. So, do not use the cruise control on winding roads or in heavy traffic. Cruise control can be dangerous on slippery roads. On such roads, fast changes in tire traction can cause excessive wheel slip, and you could lose control. Do not use cruise control on slippery roads.

If the vehicle's StabiliTrak® /Traction Control System (TCS) begins to limit wheel spin while the cruise control is on, the cruise control automatically disengages. See StabiliTrak® System on page 9‑48 or Traction Control System (TCS) on page 9‑47. When road conditions allow you to safely use it again, the cruise control can be turned back on.

These controls are located at the end of the multifunction lever. 9 (Off): Turns the system off. R (On): Turns the system on. + (Resume/Accelerate): Use to make the vehicle accelerate or resume a previously set speed.

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r T (Set): Press the button at the end of the lever to set the speed.

Setting Cruise Control If the cruise button is on when not in use, it could get bumped and go into cruise when not desired. Keep the cruise control switch off when cruise is not being used. 1. Move the cruise control lever to R. 2. Get up to the speed desired. 3. Press r T at the end of the

lever and release it.

4. Take your foot off the accelerator

pedal.

This light on the instrument panel cluster comes on while the cruise control is on.

Resuming a Set Speed If the cruise control is set at a desired speed and then the brakes are applied, the cruise control is disengaged without erasing the set speed from memory. Once the vehicle speed reaches about 40 km/h (25 mph) or more, move the cruise control lever briefly from R to S . The vehicle returns to the previous set speed and stays there.

Driving and Operating

9-51

If the lever is held at resume/ accelerate the vehicle keeps going faster until the lever is released or the brake is applied. Do not hold the lever at resume/accelerate, unless you want the vehicle to go faster.

Increasing Speed While Using Cruise Control If the cruise control system is already activated, . Use the accelerator pedal to get

to the higher speed. Press r T at the end of the lever, then release the button and the accelerator pedal. If the accelerator pedal is held longer than 60 seconds, cruise control will turn off.

to

. Move the cruise lever from R S . Hold it until the desired speed is reached, and then release the lever. To increase the vehicle speed in small amounts, move the lever briefly to S .

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9-52

Driving and Operating

Reducing Speed While Using Cruise Control If the cruise control system is already activated, . Press and hold r T until the lower speed desired is reached, then release it. To slow down in small amounts, briefly press r T .

Passing Another Vehicle While Using Cruise Control Use the accelerator pedal to increase the vehicle speed. When you take your foot off the pedal, the vehicle will slow down to the previous set cruise control speed.

Using Cruise Control on Hills How well the cruise control works on hills depends upon the vehicle speed, load, and the steepness of the hills. When going up steep hills, you might have to step on the accelerator pedal to maintain the vehicle speed. When going downhill, you might have to brake or shift to a lower gear to keep the vehicle speed down. When the brakes are applied the cruise control is disengaged.

Ending Cruise Control There are two ways to end cruise control:

To disengage cruise control; step lightly on the brake pedal or lightly tap or press the clutch, for manual transmissions. To turn off the cruise control, move the cruise control lever to 9 .

Erasing Speed Memory The cruise control set speed is erased from memory by moving the cruise control lever to 9 or if the vehicle is turned off.

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Fuel Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced detergency standards developed by auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com.

Driving and Operating

9-53

Gasoline Specifications (U.S. and Canada Only) At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/ CGSB‐3.5 or 3.511 in Canada. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Fuel Additives on page 9‑54 for additional information.

California Fuel Requirements If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel is not available in states adopting California Emissions Standards, the vehicle will operate satisfactorily on fuels meeting federal specifications, but emission

Recommended Fuel Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when driving. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.

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9-54

Driving and Operating

control system performance might be affected. The malfunction indicator lamp could turn on and the vehicle might fail a smog‐check test. See Malfunction Indicator Lamp on page 5‑13. If this occurs, return to your authorized dealer for diagnosis. If it is determined that the condition is caused by the type of fuel used, repairs might not be covered by the vehicle warranty.

Fuels in Foreign Countries Never use leaded gasoline or any other fuel not recommended in the previous text on fuel. Costly repairs caused by use of improper fuel would not be covered by the vehicle warranty. To check the fuel availability, ask an auto club, or contact a major oil company that does business in the country where you will be driving.

Fuel Additives To provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control system to work properly. In most cases, nothing should have to be added to the fuel. However, some gasolines contain only the minimum amount of additive required to meet U.S. Environmental Protection Agency regulations. To help keep fuel injectors and intake valves clean and avoid problems due to dirty injectors or valves, look for gasoline that is advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced detergency standards developed by the auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com.

For customers who do not use TOP TIER Detergent Gasoline regularly, one bottle of GM Fuel System Treatment PLUS, added to the fuel tank at every engine oil change, can help clean deposits from fuel injectors and intake valves. GM Fuel System Treatment PLUS is the only gasoline additive recommended by General Motors. It is available at your dealer. Gasolines containing oxygenates, such as ethers and ethanol, and reformulated gasolines might be available in your area. We recommend that you use these gasolines, if they comply with the specifications described earlier. However, E85 (85% ethanol) and other fuels containing more than 15% ethanol must not be used in vehicles that were not designed for those fuels.

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Driving and Operating

9-55

Notice: This vehicle was not designed for fuel that contains methanol. Do not use fuel containing methanol. It can corrode metal parts in the fuel system and also damage plastic and rubber parts. That damage would not be covered under the vehicle warranty. Some gasolines that are not reformulated for low emissions can contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); ask the attendant where you buy gasoline whether the fuel contains MMT. We recommend against the use of such gasolines. Fuels containing MMT can reduce spark plug life and affect emission control system performance. The malfunction indicator lamp might turn on. If this occurs, return to your dealer for service.

Filling the Tank

{ WARNING

Fuel vapor burns violently and a fuel fire can cause bad injuries. To help avoid injuries to you and others, read and follow all the instructions on the fuel pump island. Turn off the engine when refueling. Do not smoke near fuel or when refueling the vehicle. Do not use cellular phones. Keep sparks, flames, and smoking materials away from fuel. Do not leave the fuel pump unattended when refueling the vehicle. This is against the law in some places. Do not re-enter the vehicle while pumping fuel. Keep children away from the fuel pump; never let children pump fuel.

The tethered fuel cap is located behind a hinged fuel door on the driver side of the vehicle. To remove the fuel cap, turn it slowly counterclockwise. While refueling, hang the tethered fuel cap from the hook on the fuel door.

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Driving and Operating

{ WARNING

Fuel can spray out on you if you open the fuel cap too quickly. If you spill fuel and then something ignites it, you could be badly burned. This spray can happen if the tank is nearly full, and is more likely in hot weather. Open the fuel cap slowly and wait for any hiss noise to stop. Then unscrew the cap all the way.

Be careful not to spill fuel. Do not top off or overfill the tank and wait a few seconds after you have finished pumping before removing the nozzle. Clean fuel from painted surfaces as soon as possible. See Exterior Care on page 10‑96.

When replacing the fuel cap, turn it clockwise until it clicks. Make sure the cap is fully installed. The diagnostic system can determine if the fuel cap has been left off or improperly installed. This would allow fuel to evaporate into the atmosphere. If the fuel cap is not properly installed, the FUEL CAP message appears on the Driver Information Center (DIC) and the check engine light will be lit on the instrument panel cluster. See Fuel System Messages on page 5‑25
and Malfunction Indicator Lamp on page 5‑13 for more information.

{ WARNING If a fire starts while you are refueling, do not remove the nozzle. Shut off the flow of fuel by shutting off the pump or by notifying the station attendant. Leave the area immediately.

Notice: If a new fuel cap is needed, be sure to get the right type of cap from your dealer. The wrong type of fuel cap might not fit properly, might cause the malfunction indicator lamp to light, and could damage the fuel tank and emissions system. See Malfunction Indicator Lamp on page 5‑13.

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Filling a Portable Fuel Container

{ WARNING

Never fill a portable fuel container while it is in the vehicle. Static electricity discharge from the container can ignite the fuel vapor. You can be badly burned and the vehicle damaged if this occurs. To help avoid injury to you and others:

. Dispense fuel only into

approved containers.

. Do not fill a container while it

is inside a vehicle, in a vehicle's trunk, pickup bed, or on any surface other than the ground.

(Continued)

WARNING (Continued)

. Bring the fill nozzle in contact

with the inside of the fill opening before operating the nozzle. Contact should be maintained until the filling is complete.

. Do not smoke while

pumping fuel.

. Do not use a cellular phone

while pumping fuel.

Driving and Operating

9-57

Towing

General Towing Information Only use towing equipment that has been designed for the vehicle. Contact your dealer or trailering dealer for assistance with preparing the vehicle for towing a trailer. See the following trailer towing information in this section:

For information on driving while towing a trailer, see “Driving Characteristics and Towing Tips.” For maximum vehicle and trailer weights, see “Trailer Towing.” For information on equipment to tow a trailer, see “Towing Equipment.”

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9-58

Driving and Operating

For information on towing a disabled vehicle, see Towing the Vehicle on page 10‑91. For information on towing the vehicle behind another vehicle such as a motor home, see Recreational Vehicle Towing on page 10‑91.

Driving Characteristics and Towing Tips

Pulling A Trailer Here are some important points:

There are many different laws, including speed limit restrictions, having to do with trailering. Make sure the rig will be legal, not only where you live but also where you will be driving. A good source for this information can be state or provincial police.

. Consider using a sway control.

See “Hitches” in Towing Equipment on page 9‑66.

. Do not tow a trailer at all during the first 800 km (500 miles) the new vehicle is driven. The engine, axle or other parts could be damaged. Then, during the first 800 km (500 miles) that a trailer is towed, do not drive over 80 km/h (50 mph) and do not make starts at full throttle. This helps the engine and other parts of the vehicle wear in at the heavier loads.

. Vehicles with automatic transmissions can tow in D (Drive), but you may want to shift to a lower gear selection if the transmission shifts too often (e.g., under heavy loads and/or hilly conditions). If the vehicle has a manual transmission it is better not to use the highest gear.

Three important considerations have to do with weight:

The weight of the trailer The weight of the trailer tongue The weight on the vehicle's tires

Driving with a Trailer

{ WARNING

When towing a trailer, exhaust gases may collect at the rear of the vehicle and enter if the liftgate, trunk/hatch, or rear-most window is open. Engine exhaust contains Carbon Monoxide (CO) which cannot be seen or smelled. It can cause unconsciousness and even death. (Continued)

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WARNING (Continued)

To maximize safety when towing a trailer:

. Have the exhaust system

inspected for leaks and make necessary repairs before starting a trip.

. Never drive with the liftgate,

trunk/hatch, or rear-most window open.

. Fully open the air outlets on

or under the instrument panel.

. Adjust the Climate Control

system to a setting that brings in only outside air and set the fan speed to the highest setting. See Climate Control System in the Index.

For more information about Carbon Monoxide, see Engine Exhaust on page 9‑34.

Driving and Operating

9-59

Towing a trailer requires a certain amount of experience. Get to know the rig before setting out for the open road. Get acquainted with the feel of handling and braking with the added weight of the trailer. And always keep in mind that the vehicle you are driving is now longer and not as responsive as the vehicle is by itself. Before starting, check all trailer hitch parts and attachments, safety chains, electrical connectors, lamps, tires and mirror adjustments. If the trailer has electric brakes, start the vehicle and trailer moving and then apply the trailer brake controller by hand to be sure the brakes are working. This checks the electrical connection at the same time. During the trip, check occasionally to be sure that the load is secure, and that the lamps and any trailer brakes are still working.

While towing a trailer or when exposed to long periods of sunshine, the floor of the truck bed may become very warm. Avoid putting items in the truck bed that might be affected by high ambient temperatures. Following Distance Stay at least twice as far behind the vehicle ahead as you would when driving the vehicle without a trailer. This can help to avoid situations that require heavy braking and sudden turns. Passing More passing distance is needed when towing a trailer. Because the rig is longer, it is necessary to go much farther beyond the passed vehicle before returning to the lane.

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Driving and Operating

Backing Up Hold the bottom of the steering wheel with one hand. Then, to move the trailer to the left, move that hand to the left. To move the trailer to the right, move your hand to the right. Always back up slowly and, if possible, have someone guide you. Making Turns Notice: Making very sharp turns while trailering could cause the trailer to come in contact with the vehicle. The vehicle could be damaged. Avoid making very sharp turns while trailering. When turning with a trailer, make wider turns than normal. Do this so the trailer will not strike soft shoulders, curbs, road signs, trees or other objects. Avoid jerky or sudden maneuvers. Signal well in advance.

Turn Signals When Towing a Trailer The arrows on the instrument panel flash whenever signaling a turn or lane change. Properly hooked up, the trailer lamps also flash, telling other drivers the vehicle is turning, changing lanes or stopping. When towing a trailer, the arrows on the instrument panel flash for turns even if the bulbs on the trailer are burned out. For this reason you may think other drivers are seeing the signal when they are not. It is important to check occasionally to be sure the trailer bulbs are still working. Driving On Grades Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might have to be used so much that they would get hot and no longer work well.

Vehicles with automatic transmissions can tow in D (Drive), but you may want to shift to a lower gear selection if the transmission shifts too often (e.g., under heavy loads and/or hilly conditions). If the vehicle has a manual transmission it is better not to use the highest gear. When towing at high altitude on steep uphill grades, consider the following: Engine coolant will boil at a lower temperature than at normal altitudes. If the engine is turned off immediately after towing at high altitude on steep uphill grades, the vehicle may show signs similar to engine overheating. To avoid this, let the engine run while parked, preferably on level ground, with an automatic transmission in P (Park) or a manual transmission in N (Neutral) with the parking brake applied, for a few minutes before turning the engine off. If the overheat warning comes on, see Engine Overheating on page 10‑23.

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Parking on Hills

{ WARNING

Parking the vehicle on a hill with the trailer attached can be dangerous. If something goes wrong, the rig could start to move. People can be injured, and both the vehicle and the trailer can be damaged. When possible, always park the rig on a flat surface.

If parking the rig on a hill: 1. Press the brake pedal, but do

not shift into P (Park) yet for vehicles with an automatic transmission, or into gear for vehicles with a manual transmission. Turn the wheels into the curb if facing downhill or into traffic if facing uphill.

2. Have someone place chocks

under the trailer wheels.

Driving and Operating

9-61

3. When the wheel chocks are in place, release the brake pedal until the chocks absorb the load.

3. Drive slowly until the trailer is

clear of the chocks.

4. Stop and have someone pick up

4. Reapply the brake pedal. Then

and store the chocks.

5.

apply the parking brake and shift into P (Park) for vehicles with an automatic transmission or into gear for vehicles with a manual transmission. If the vehicle has four-wheel-drive, be sure the transfer case is in a drive gear and not in N (Neutral). See Four-Wheel Drive on page 10‑30
for more information.

6. Release the brake pedal. Leaving After Parking on a Hill 1. Apply and hold the brake pedal

while you:

Start the engine Shift into a gear Release the parking brake

2. Let up on the brake pedal.

Maintenance When Trailer Towing The vehicle needs service more often when pulling a trailer. See Maintenance Schedule on page 11‑3 or the Index for more information. Things that are especially important in trailer operation are automatic transmission fluid, engine oil, axle lubricant, belts, cooling system and brake system. It is a good idea to inspect these before and during the trip. Check periodically to see that all hitch nuts and bolts are tight.

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Driving and Operating

Trailer Towing

{ WARNING

The driver can lose control when pulling a trailer if the correct equipment is not used or the vehicle is not driven properly. For example, if the trailer is too heavy, the brakes may not work well — or even at all. The driver and passengers could be seriously injured. The vehicle may also be damaged; the resulting repairs would not be covered by the vehicle warranty. Pull a trailer only if all the steps in this section have been followed. Ask your dealer for advice and information about towing a trailer with the vehicle.

Notice: Pulling a trailer improperly can damage the vehicle and result in costly repairs not covered by the vehicle warranty.

To pull a trailer correctly, follow the advice in this section and see your dealer for important information about towing a trailer with the vehicle. To identify the trailering capacity of the vehicle, read the information in “Weight of the Trailer” that appears later in this section. Trailering is different than just driving the vehicle by itself. Trailering means changes in handling, acceleration, braking, durability and fuel economy. Successful, safe trailering takes correct equipment, and it has to be used properly. The following information has many time-tested, important trailering tips and safety rules. Many of these are important for your safety and that of your passengers. So please read this section carefully before pulling a trailer.

Weight of the Trailer How heavy can a trailer safely be? It depends on how the rig is used. For example, speed, altitude, road grades, outside temperature and how much the vehicle is used to pull a trailer are all important. It can depend on any special equipment on the vehicle, and the amount of tongue weight the vehicle can carry. See “Weight of the Trailer Tongue” later in this section for more information. Maximum trailer weight is calculated assuming only the driver is in the tow vehicle and it has all the required trailering equipment. The weight of additional optional equipment, passengers and cargo in the tow vehicle must be subtracted from the maximum trailer weight. Use the following chart to determine how much the vehicle can weigh, based upon the vehicle model and options.

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Vehicle

Axle Ratio

Maximum Trailer Weight

GCWR*

Driving and Operating

9-63

2WD Regular Cab

2.9L L4 Automatic Transmission 2.9L L4 Manual Transmission 3.7L L5 Automatic Transmission

2WD Extended Cab

2.9L L4 Automatic Transmission 2.9L L4 Manual Transmission 3.7L L5 Automatic Transmission

5.3L V8 Automatic Transmission

5.3L V8 Automatic Transmission, ZQ8 Sport Suspension

2WD Crew Cab

2.9L L4 Automatic Transmission 2.9L L4 Manual Transmission 3.7L L5 Automatic Transmission

5.3L V8 Automatic Transmission

3.73
3.73
3.73

3.73
3.73
3.73
3.42
3.73

3.42

3.73
3.73
3.73
3.42
3.73

1 542 kg (3,400 lbs) 1 089 kg (2,400 lbs) 1 814 kg (4,000 lbs)

3 175 kg (7,000 lbs) 2 722 kg (6,000 lbs) 3 856 kg (8,500 lbs)

1 452 kg (3,200 lbs) 998 kg (2,200 lbs) 2 495 kg (5,500 lbs)

3 175 kg (7,000 lbs) 2 722 kg (6,000 lbs) 4 309 kg (9,500 lbs)

2 722 kg (6,000 lbs)

4 717 kg (10,400 lbs)

1 814 kg (4,000 lbs)

3 856 kg (8,500 lbs)

1 361 kg (3,000 lbs) 953 kg (2,100 lbs) 2 495 kg (5,500 lbs)

3 175 kg (7,000 lbs) 2 722 kg (6,000 lbs) 4 309 kg (9,500 lbs)

2 722 kg (6,000 lbs)

4 717 kg (10,400 lbs)

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Driving and Operating

Vehicle

Axle Ratio

Maximum Trailer Weight

GCWR*

5.3L V8 Automatic Transmission, ZQ8 Sport Suspension

4WD Regular Cab

2.9L L4 Automatic Transmission 2.9L L4 Manual Transmission 3.7L L5 Automatic Transmission

4WD Extended Cab

2.9L L4 Automatic Transmission 2.9L L4 Manual Transmission 3.7L L5 Automatic Transmission

5.3L V8 Automatic Transmission

4WD Crew Cab

3.7L L5 Automatic Transmission

5.3L V8 Automatic Transmission

3.42

3.73
3.73
3.73

3.73
3.73
3.73
3.42
4.10

3.73
3.42
4.10

1 724 kg (3,800 lbs)

3 856 kg (8,500 lbs)

1 406 kg (3,100 lbs) 953 kg (2,100 lbs) 1 814 kg (4,000 lbs)

3 175 kg (7,000 lbs) 2 722 kg (6,000 lbs) 4 082 kg (9,000 lbs)

1 315 kg (2,900 lbs) 861 kg (1,900 lbs) 2 495 kg (5,500 lbs)

3 175 kg (7,000 lbs) 2 722 kg (6,000 lbs) 4 445 kg (9,800 lbs)

2 722 kg (6,000 lbs)

4 717 kg (10,400 lbs)

2 495 kg (5,500 lbs)

4 445 kg (9,800 lbs)

2 722 kg (6,000 lbs)

4 717 kg (10,400 lbs)

*The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversions. The GCWR for the vehicle should not be exceeded.

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Ask your dealer for our trailering information or advice, or write us at our Customer Assistance Offices. See Customer Assistance Offices (U.S. and Canada) on page 13‑5 or Customer Assistance Offices (Mexico) on page 13‑5 for more information. Weight of the Trailer Tongue The tongue load (A) of any trailer is an important weight to measure because it affects the total gross weight of the vehicle. The Gross Vehicle Weight (GVW) includes the curb weight of the vehicle, any cargo carried in it, and the people who will be riding in the vehicle. If there are a lot of options, equipment, passengers or cargo in the vehicle, it will reduce the tongue weight the vehicle can carry, which will also reduce the trailer weight the vehicle can tow. If towing a trailer, the tongue load must be added to the GVW because the vehicle will be carrying that weight, too. See

Vehicle Load Limits on page 9‑19
for more information about the vehicle's maximum load capacity.

The trailer tongue weight (A) should be 10 percent to 15 percent of the total loaded trailer weight, up to a maximum of 226 kg (500 lbs) with a weight carrying hitch. Do not exceed the maximum allowable tongue weight for the vehicle. Choose the shortest hitch extension that will position the hitch ball closest to the vehicle. This will help reduce the effect of trailer tongue weight on the rear axle.

Driving and Operating

9-65

After loading the trailer, weigh the trailer and then the tongue, separately, to see if the weights are proper. If they are not, adjustments might be made by moving some items around in the trailer. Trailering may be limited by the vehicle's ability to carry tongue weight. Tongue weight cannot cause the vehicle to exceed the GVWR (Gross Vehicle Weight Rating) or the RGAWR (Rear Gross Axle Weight Rating). The effect of additional weight may reduce the trailering capacity more than the total of the additional weight. It is important that the vehicle does not exceed any of its ratings — GCWR, GVWR, RGAWR, Maximum Trailer Rating or Tongue Weight. The only way to be sure it is not exceeding any of these ratings is to weigh the vehicle and trailer.

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9-66

Driving and Operating

Total Weight on the Vehicle's Tires Be sure the vehicle's tires are inflated to the upper limit for cold tires. These numbers can be found on the Certification/Tire label located at the bottom of the center pillar on the driver's side of the vehicle, or see Vehicle Load Limits on page 9‑19. Make sure not to go over the GVW limit for the vehicle, or the GAWR, including the weight of the trailer tongue. If using a weight distributing hitch, make sure not to go over the rear axle limit before applying the weight distribution spring bars.

Towing Equipment

Hitches It is important to have the correct hitch equipment. Crosswinds, large trucks going by and rough roads are a few reasons why the right hitch is needed.

Weight-Distributing Hitches and Weight Carrying Hitches A step bumper hitch can be used for trailers up to 907 kg (2,000 lbs) total weight, and 90 kg (200 lbs) tongue weight. Notice: If a step-bumper hitch is used, the bumper could be damaged in sharp turns. Make sure there is ample room when turning to avoid contact between the trailer and the bumper. Safety Chains Always attach chains between the vehicle and the trailer. Cross the safety chains under the tongue of the trailer to help prevent the tongue from contacting the road if it becomes separated from the hitch. Instructions about safety chains may be provided by the hitch manufacturer or by the trailer manufacturer. For trailers up to 907 kg (2,000 lbs) safety chains may be attached to the attaching points on the bumper. For heavier trailers,

follow the trailer or hitch manufacturer's recommendation for attaching safety chains. Always leave just enough slack so the rig can turn. Never allow safety chains to drag on the ground. Trailer Brakes A loaded trailer that weighs more than 450 kg (1,000 lbs) needs to have its own brake system that is adequate for the weight of the trailer. Be sure to read and follow the instructions for the trailer brakes so they are installed, adjusted and maintained properly. Since the vehicle is equipped with StabiliTrak®, the trailer cannot tap into the vehicle's hydraulic brake system.

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Driving and Operating

9-67

Pickup Conversion to Chassis Cab We are aware that some vehicle owners might consider having the pickup box removed and a commercial or recreational body installed. However, we recommend that conversions of this type not be done to pickups. Owners should be aware that, as manufactured, there are differences between a chassis cab and a pickup with the box removed which could affect vehicle safety.

Trailer Wiring Harness The vehicle may be equipped with a four‐pin trailer towing harness. This harness has a four‐pin trailer connector that is attached to a bracket on the hitch platform. The four‐wire harness contains the following trailer circuits: . Yellow: Left Stop/Turn Signal . Green: Right Stop/Turn Signal . Brown: Taillamps/Park lamps . White: Ground

Conversions and Add-Ons

Add-On Electrical Equipment Notice: Do not add anything electrical to the vehicle unless you check with your dealer first. Some electrical equipment can damage the vehicle and the damage would not be covered by the vehicle's warranty. Some add-on electrical equipment can keep other components from working as they should. Add-on equipment can drain the vehicle's 12‐volt battery, even if the vehicle is not operating. The vehicle has an airbag system. Before attempting to add anything electrical to the vehicle, see Servicing the Airbag-Equipped Vehicle on page 3‑32 and Adding Equipment to the Airbag-Equipped Vehicle on page 3‑33.

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9-68

Driving and Operating

2 NOTES

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Vehicle Care

General Information

General Information . . . . . . . . . . 10-2
California Proposition

65 Warning . . . . . . . . . . . . . . . . . 10-3

California Perchlorate

Materials Requirements . . . . 10-3

Accessories and

Modifications . . . . . . . . . . . . . . . 10-4

Vehicle Checks Doing Your Own

Service Work . . . . . . . . . . . . . . . 10-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Engine Compartment

Overview . . . . . . . . . . . . . . . . . . . 10-6
Engine Oil . . . . . . . . . . . . . . . . . . 10-10
Engine Oil Life System . . . . . 10-12
Automatic Transmission

Fluid . . . . . . . . . . . . . . . . . . . . . . 10-13

Manual Transmission

Fluid . . . . . . . . . . . . . . . . . . . . . . 10-16
Hydraulic Clutch . . . . . . . . . . . . 10-17

Engine Air Cleaner/Filter . . . . 10-17
Cooling System . . . . . . . . . . . . 10-18
Engine Coolant . . . . . . . . . . . . . 10-19
Engine Overheating . . . . . . . . 10-23
Engine Fan . . . . . . . . . . . . . . . . . 10-25
Power Steering Fluid . . . . . . . 10-25
Washer Fluid . . . . . . . . . . . . . . . 10-26
Brakes . . . . . . . . . . . . . . . . . . . . . 10-27
Brake Fluid . . . . . . . . . . . . . . . . . 10-28
Battery . . . . . . . . . . . . . . . . . . . . . 10-30
Four-Wheel Drive . . . . . . . . . . . 10-30
Front Axle . . . . . . . . . . . . . . . . . . 10-31
Rear Axle . . . . . . . . . . . . . . . . . . 10-32
Starter Switch Check . . . . . . . 10-32
Automatic Transmission Shift

Lock Control Function Check . . . . . . . . . . . . . . . . . . . . . 10-33

Ignition Transmission Lock

Check . . . . . . . . . . . . . . . . . . . . . 10-33

Park Brake and P (Park)

Mechanism Check . . . . . . . . 10-34

Wiper Blade

Replacement . . . . . . . . . . . . . . 10-34

Headlamp Aiming

Headlamp Aiming . . . . . . . . . . 10-36

Vehicle Care

10-1

Bulb Replacement

Bulb Replacement . . . . . . . . . . 10-36
Halogen Bulbs . . . . . . . . . . . . . . 10-36
Headlamps . . . . . . . . . . . . . . . . . 10-37
Taillamps, Turn Signal,

Stoplamps, and Back-Up Lamps . . . . . . . . . . . . . . . . . . . . 10-37

Center High-Mounted

Stoplamp (CHMSL) . . . . . . . 10-38
License Plate Lamp . . . . . . . . 10-39
Replacement Bulbs . . . . . . . . . 10-39

Electrical System

Electrical System

Overload . . . . . . . . . . . . . . . . . . 10-40

Fuses and Circuit

Breakers . . . . . . . . . . . . . . . . . . 10-40

Engine Compartment Fuse

Block . . . . . . . . . . . . . . . . . . . . . 10-41

Wheels and Tires

Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-47
Tire Sidewall Labeling . . . . . . 10-48
Tire Designations . . . . . . . . . . . 10-50
Tire Terminology and

Definitions . . . . . . . . . . . . . . . . 10-51

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10-2

Vehicle Care

General Information For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.

Jump Starting

Jump Starting . . . . . . . . . . . . . . 10-87

Towing

Towing the Vehicle . . . . . . . . . 10-91
Recreational Vehicle

Towing . . . . . . . . . . . . . . . . . . . . 10-91

Appearance Care

Exterior Care . . . . . . . . . . . . . . . 10-96
Interior Care . . . . . . . . . . . . . . . . 10-99
Floor Mats . . . . . . . . . . . . . . . . 10-102

Tire Pressure . . . . . . . . . . . . . . . 10-54
Tire Pressure for High-Speed

Operation . . . . . . . . . . . . . . . . . 10-55

Tire Pressure Monitor

System . . . . . . . . . . . . . . . . . . . 10-56

Tire Pressure Monitor

Operation . . . . . . . . . . . . . . . . . 10-57
Tire Inspection . . . . . . . . . . . . . . 10-60
Tire Rotation . . . . . . . . . . . . . . . 10-60
When It Is Time for New

Tires . . . . . . . . . . . . . . . . . . . . . . 10-62
Buying New Tires . . . . . . . . . . . 10-62
Different Size Tires and

Wheels . . . . . . . . . . . . . . . . . . . 10-64

Uniform Tire Quality

Grading . . . . . . . . . . . . . . . . . . . 10-65

Wheel Alignment and Tire

Balance . . . . . . . . . . . . . . . . . . . 10-66
Wheel Replacement . . . . . . . . 10-67
Tire Chains . . . . . . . . . . . . . . . . . 10-68
If a Tire Goes Flat . . . . . . . . . . 10-69
Tire Changing . . . . . . . . . . . . . . 10-71
Secondary Latch System . . . 10-82
Compact Spare Tire . . . . . . . . 10-85
Full-Size Spare Tire . . . . . . . . 10-86

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Genuine GM parts have one of these marks:

California Proposition 65 Warning Most motor vehicles, including this one, contain and/or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Engine exhaust, many parts and systems, many fluids, and some component wear by-products contain and/or emit these chemicals.

Vehicle Care

10-3

California Perchlorate Materials Requirements Certain types of automotive applications, such as airbag initiators, safety belt pretensioners, and lithium batteries contained in Remote Keyless Entry transmitters, may contain perchlorate materials. Special handling may be necessary. For additional information, see www.dtsc.ca.gov/hazardouswaste/ perchlorate.

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10-4

Vehicle Care

Accessories and Modifications Adding non‐dealer accessories or making modifications to the vehicle can affect vehicle performance and safety, including such things as airbags, braking, stability, ride and handling, emissions systems, aerodynamics, durability, and electronic systems like antilock brakes, traction control, and stability control. These accessories or modifications could even cause malfunction or damage not covered by the vehicle warranty.

Damage to vehicle components resulting from modifications or the installation or use of non‐GM certified parts, including control module or software modifications, is not covered under the terms of the vehicle warranty and may affect remaining warranty coverage for affected parts. GM Accessories are designed to complement and function with other systems on the vehicle. See your dealer to accessorize the vehicle using genuine GM Accessories installed by a dealer technician. Also, see Adding Equipment to the Airbag-Equipped Vehicle on page 3‑33.

Vehicle Checks

Doing Your Own Service Work

{ WARNING

It can be dangerous to work on your vehicle if you do not have the proper knowledge, service manual, tools, or parts. Always follow owner manual procedures and consult the service manual for your vehicle before doing any service work.

If doing some of your own service work, use the proper service manual. It tells you much more about how to service the vehicle than this manual can. To order the proper service manual, see Service Publications Ordering Information on page 13‑18.

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This vehicle has an airbag system. Before attempting to do your own service work, see Servicing the Airbag-Equipped Vehicle on page 3‑32. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Records on page 11‑16.

Hood To open the hood, do the following:

1. Pull the handle with this symbol

on it. It is located inside the vehicle on the lower left side of the instrument panel.

Vehicle Care

10-5

2. Release the secondary latch on the hood. It is located below the front center of the hood.

3. Lift the hood. 4. Release the hood prop from its retainer and put the hood prop into the slot in the hood.

Before closing the hood, be sure all the filler caps are on properly. Then lift the hood to relieve pressure on the hood prop. Remove the hood prop from the slot in the hood and return the prop to its retainer. Lower the hood 25 to 30 cm (10 to 12 in) above the vehicle and release it to latch fully. Check to make sure the hood is closed and repeat the procedure if necessary.

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10-6

Vehicle Care

Engine Compartment Overview

3.7 L L5 Engine Shown (2.9 L L4 Engine Similar)

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Vehicle Care

10-7

A. Windshield Washer Fluid. See

F. Engine Oil Fill Cap. See “When

J. Remote Positive (+) Terminal.

“Adding Washer Fluid” under Washer Fluid on page 10‑26.

to Add Engine Oil” under Engine Oil on page 10‑10.

See Jump Starting on page 10‑87.

B. Engine Coolant Recovery Tank.

G. Radiator Pressure Cap. See

Cooling System on page 10‑18.

H. Remote Negative (−) Terminal (GND). See Jump Starting on page 10‑87. Engine Oil Dipstick. See “Checking Engine Oil” under Engine Oil on page 10‑10.

I.

See Engine Coolant on page 10‑19.

C. Engine Air Cleaner/Filter on

page 10‑17.

D. Power Steering Fluid Reservoir

(low in engine compartment). See Power Steering Fluid on page 10‑25.

E. Automatic Transmission Fluid

Dipstick (If Equipped). See “Checking the Fluid Level” under Automatic Transmission Fluid on page 10‑13.

K. Brake Fluid Reservoir. See Brake Fluid on page 10‑28. L. Engine Compartment Fuse

Block on page 10‑41.

M. Battery on page 10‑30. N. Hydraulic Clutch Fluid Reservoir

(If Equipped). See Hydraulic Clutch on page 10‑17.

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10-8

Vehicle Care

5.3 L V8 Engine

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A. Engine Air Cleaner/Filter on

E. Automatic Transmission Fluid

page 10‑17.

B. Air Filter Restriction Indicator (If Equipped). See Engine Air Cleaner/Filter on page 10‑17.

C. Windshield Washer Fluid

Reservoir. See “Adding Washer Fluid” under Washer Fluid on page 10‑26.

D. Engine Coolant Recovery Tank.

See Engine Coolant on page 10‑19.

Dipstick (If Equipped). See “Checking the Fluid Level” under Automatic Transmission Fluid on page 10‑13.

F. Engine Oil Dipstick. See

“Checking Engine Oil” under Engine Oil on page 10‑10.

G. Engine Oil Fill Cap. See “When

to Add Engine Oil” under Engine Oil on page 10‑10.

Vehicle Care

10-9

H. Brake Fluid Reservoir. See Brake Fluid on page 10‑28. Battery on page 10‑30.

I. J. Power Steering Fluid Reservoir.

See Power Steering Fluid on page 10‑25.

K. Engine Compartment Fuse

Block on page 10‑41.

L. Radiator Pressure Cap. See

Cooling System on page 10‑18.

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10-10

Vehicle Care

Engine Oil To ensure proper engine performance and long life, careful attention must be paid to engine oil. Following these simple, but important steps will help protect your investment: . Always use engine oil approved to the proper specification and of the proper viscosity grade. See “Selecting the Right Engine Oil” in this section.

. Check the engine oil level regularly and maintain the proper oil level. See “Checking Engine Oil” and “When to Add Engine Oil” in this section.

. Change the engine oil at the

appropriate time. See Engine Oil Life System on page 10‑12. . Always dispose of engine oil

properly. See “What to Do with Used Oil” in this section.

Checking Engine Oil It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the vehicle must be on level ground. The engine oil dipstick handle is a yellow loop. See Engine Compartment Overview on page 10‑6 for the location of the engine oil dipstick. Obtaining an accurate oil level reading is essential: 1.

If the engine has been running recently, turn off the engine and allow several minutes for the oil to drain back into the oil pan. Checking the oil level too soon after engine shutoff will not provide an accurate oil level reading.

2. Pull out the dipstick and clean it with a paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down, and check the level.

When to Add Engine Oil

L4 and L5 Engines

V8 Engine

If the oil is below the cross-hatched area at the tip of the dipstick, add 1 L (1 qt) of the recommended oil and then recheck the level. See “Selecting the Right Engine Oil” in this section for an explanation of what kind of oil to use. For engine oil crankcase capacity, see Capacities and Specifications on page 12‑2.

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Selecting the Right Engine Oil Selecting the right engine oil depends on both the proper oil specification and viscosity grade. See Recommended Fluids and Lubricants on page 11‑12.

Specification Use and ask for licensed engine oils with the dexos1™ approved certification mark. Engine oils meeting the requirements for the vehicle should have the dexos1
approved certification mark. This certification mark indicates that the oil has been approved to the dexos1
specification.

Notice: Do not add too much oil. Oil levels above or below the acceptable operating range shown on the dipstick are harmful to the engine. If you find that you have an oil level above the operating range, i.e., the engine has so much oil that the oil level gets above the cross-hatched area that shows the proper operating range, the engine could be damaged. You should drain out the excess oil or limit driving of the vehicle and seek a service professional to remove the excess amount of oil. See Engine Compartment Overview on page 10‑6 for the location of the engine oil fill cap. Add enough oil to put the level somewhere in the proper operating range. Push the dipstick all the way back in when through.

Vehicle Care

10-11

Notice: Failure to use the recommended engine oil or equivalent can result in engine damage not covered by the vehicle warranty. Check with your dealer or service provider on whether the oil is approved to the dexos1 specification.

Viscosity Grade SAE 5W‐30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W‐30, 10W‐40, or 20W‐50. If in an area of extreme cold, where the temperature falls below −20°F (−29°C), an SAE 0W‐30 oil should be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. When selecting an oil of the appropriate viscosity

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10-12

Vehicle Care

grade, always select an oil that meets the dexos1 specification or equivalent. See “Specification” for more information. Engine Oil Additives/Engine Oil Flushes Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection. Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty. What to Do with Used Oil Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer. Do not let used oil stay on your skin for very long. Clean your skin and nails with soap and water, or a good hand cleaner. Wash or properly dispose of clothing or rags

containing used engine oil. See the manufacturer's warnings about the use and disposal of oil products. Used oil can be a threat to the environment. If you change your own oil, be sure to drain all the oil from the filter before disposal. Never dispose of oil by putting it in the trash or pouring it on the ground, into sewers, or into streams or bodies of water. Recycle it by taking it to a place that collects used oil.

Engine Oil Life System

When to Change Engine Oil This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is indicated can vary considerably. For the oil life system to work properly, the system must be reset every time the oil is changed.

When the system has calculated that oil life has been diminished, it indicates that an oil change is necessary. A CHANGE OIL message comes on. See Engine Oil Messages on page 5‑24. Change the oil as soon as possible within the next 1 000 km (600 mi). It is possible that, if driving under the best conditions, the oil life system might indicate that an oil change is not necessary for up to a year. The engine oil and filter must be changed at least once a year and, at this time, the system must be reset. Your dealer has trained people who will perform this work and reset the system. It is also important to check the oil regularly over the course of an oil drain interval and keep it at the proper level. If the system is ever reset accidentally, the oil must be changed at 5 000 km (3,000 mi) since the last oil change. Remember to reset the oil life system whenever the oil is changed.

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How to Reset the Engine Oil Life System Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. To reset the system: 1. Turn the ignition to ON/RUN,

with the engine off .

2. Press and release the stem in

the lower center of the instrument cluster until the OIL LIFE message is displayed.

3. Once the alternating OIL LIFE and RESET messages appear, press and hold the stem until several beeps sound. This confirms that the oil life system has been reset.

4. Turn the key to LOCK/OFF. If the CHANGE OIL message comes back on when the vehicle is started, the engine oil life system has not been reset. Repeat the procedure.

Automatic Transmission Fluid

When to Check and Change Automatic Transmission Fluid A good time to check the automatic transmission fluid level is when the engine oil is changed. Change the fluid and filter at the intervals listed in Maintenance Schedule on page 11‑3, and be sure to use the transmission fluid listed in Recommended Fluids and Lubricants on page 11‑12. How to Check Automatic Transmission Fluid Because this operation can be a little difficult, it may be decided to have this done at the dealer service department. If not taken to the dealer, be sure to follow all the instructions here, or a false reading on the dipstick could result.

Vehicle Care

10-13

Notice: Too much or too little fluid can damage the transmission. Too much can mean that some of the fluid could come out and fall on hot engine parts or exhaust system parts, starting a fire. Too little fluid could cause the transmission to overheat. Be sure to get an accurate reading if checking the transmission fluid. Wait at least 30 minutes before checking the transmission fluid level if the vehicle has been driven: . When outside temperatures are

above 32°C (90°F).

. At high speed for quite a while. In heavy traffic — especially in hot weather.

. While pulling a trailer. To get the right reading, the fluid should be at normal operating temperature, which is 82°C to 93°C (180°F to 200°F).

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10-14

Vehicle Care

Get the vehicle warmed up by driving about 24 km (15 mi) when outside temperatures are above 10°C (50°F). If it is colder than 10°C (50°F), drive the vehicle in 3 (Third) until the engine temperature gauge moves and then remains steady for 10 minutes. A cold fluid check can be made after the vehicle has been sitting for eight hours or more with the engine off, but this is used only as a reference. Let the engine run at idle for five minutes if outside temperatures are 10°C (50°F) or more. If it is colder than 10°C (50°F), the engine may have to idle longer. Should the fluid level be low during this cold check, check the fluid hot before adding fluid. Checking the fluid hot gives a more accurate reading of the fluid level.

Checking the Fluid Level To prepare the vehicle: 1. Park the vehicle on a level

place. Keep the engine running. 2. With the parking brake applied, place the shift lever in P (Park).

3. With foot on the brake pedal, move the shift lever through each gear range, pausing for about three seconds in each range. Then, position the shift lever in P (Park).

4. Let the engine run at idle for

three minutes or more.

Then, without shutting off the engine: 1. Flip the handle up and then pull out the dipstick and wipe it with a clean rag or paper towel.

The automatic transmission dipstick handle with this symbol on it is located in the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview on page 10‑6 for more information on location.

2. Push it back in all the way, wait three seconds, and pull it back out again.

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How to Add Automatic Transmission Fluid Refer to the Maintenance Schedule to determine what kind of transmission fluid to use. See Recommended Fluids and Lubricants on page 11‑12. Add fluid only after checking the transmission fluid while it is hot. A cold check is used only as a reference. If the fluid level is low, add only enough of the proper fluid to bring the level up to the HOT area for a hot check. It does not take much fluid, generally less than 0.5 L (1 pt). Do not overfill.

Vehicle Care

10-15

Notice: Use of the incorrect automatic transmission fluid may damage the vehicle, and the damages may not be covered by the vehicle warranty. Always use the automatic transmission fluid listed in Recommended Fluids and Lubricants on page 11‑12. . After adding fluid, recheck the fluid level as described under “How to Check Automatic Transmission Fluid,” earlier in this section.

. When the correct fluid level is

obtained, push the dipstick back in all the way; then flip the handle down to lock the dipstick in place.

3. Check both sides of the dipstick,

and read the lower level. The fluid level must be in the COLD area, below the cross-hatched area, for a cold check or in the HOT or cross-hatched area for a hot check. Be sure to keep the dipstick pointed down to get an accurate reading. If the fluid level is in the acceptable range, push the dipstick back in all the way; then flip the handle down to lock the dipstick in place.

4.

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10-16

Vehicle Care

Manual Transmission Fluid

When to Check A good time to check the manual transmission fluid is when the engine oil is changed. However, the fluid in the manual transmission does not require changing. How to Check Because this operation can be a little difficult, it may be decided to have this done at the dealer service department. If not taken to the dealer, be sure to follow all the instructions here, or a false reading on the dipstick could result. Notice: Too much or too little fluid can damage the transmission. Too little fluid could cause the transmission to overheat. Be sure to get an accurate reading if checking the transmission fluid.

Check the fluid level only when the engine is off, the vehicle is parked on a level place and the transmission is cool enough to touch the transmission case. After this is done:

1. Remove the fill plug. 2. Check that the lubricant level is

up to the bottom of the fill plug hole.

3.

If the fluid level is good, install the plug and be sure it is fully seated. If the fluid level is low, add more fluid as described in the next steps.

How to Add Fluid Here is how to add fluid. Refer to the Maintenance Schedule to determine what kind of fluid to use. See Recommended Fluids and Lubricants on page 11‑12. 1. Remove the fill plug. 2. Add fluid at the fill plug hole.

Add only enough fluid to bring the fluid level up to the bottom of the fill plug hole. Install the fill plug. Be sure the plug is fully seated.

3.

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Hydraulic Clutch The hydraulic clutch linkage in the