2009 Chevrolet Trailblazer Owners Manual

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Repeat this until help arrives but only when you feel really uncomfortable from the cold. Moving about to keep warm also helps. If it takes some time for help to arrive, now and then when you run the engine, push the accelerator pedal slightly so the engine runs faster than the idle speed. This keeps the battery charged to restart the vehicle and to signal for help with the headlamps. Do this as little as possible to save fuel.

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If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow Slowly and cautiously spin the wheels to free the vehicle when stuck in sand, mud, ice, or snow. See Rocking Your Vehicle to Get It Out on page 4-32. If the vehicle has a traction system, it can often help to free a stuck vehicle. Refer to the vehicle’s traction system in the Index. If stuck too severely for the traction system to free the vehicle, turn the traction system off and use the rocking method.

{ CAUTION:

If you let your vehicle’s tires spin at high speed, they can explode, and you or others could be injured. The vehicle can overheat, causing an engine compartment ﬁre or other damage. Spin the wheels as little as possible and avoid going above 35 mph (55 km/h) as shown on the speedometer.

For information about using tire chains on the vehicle, see Tire Chains on page 5-81.

Rocking Your Vehicle to Get It Out Turn the steering wheel left and right to clear the area around the front wheels. For four-wheel-drive vehicles, shift into Four-Wheel High. For vehicles with StabiliTrak®, turn the traction control part of the system off. Shift back and forth between R (Reverse) and a forward gear, spinning the wheels as little as possible. To prevent transmission wear, wait until the wheels stop spinning before shifting gears. Release the accelerator pedal while shifting, and press lightly on the accelerator pedal when the transmission is in gear. Slowly spinning the wheels in the forward and reverse directions causes a rocking motion that could free the vehicle. If that does not get the vehicle out after a few tries, it might need to be towed out. Recovery hooks can be used, if the vehicle has them. If the vehicle does need to be towed out, see Towing Your Vehicle on page 4-40. Recovery Hooks

{ CAUTION:

These hooks, when used, are under a lot of force. Always pull the vehicle straight out. Never pull on the hooks at a sideways angle. The hooks could break off and you or others could be injured from the chain or cable snapping back.

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Notice: Never use recovery hooks to tow the vehicle. Your vehicle could be damaged and it would not be covered by warranty. For vehicles with recovery hooks at the front of the vehicle, you can use them if you’re stuck off-road and need to be pulled to some place where you can continue driving.

Loading the Vehicle It is very important to know how much weight your vehicle can carry. This weight is called the vehicle capacity weight and includes the weight of all occupants, cargo, and all nonfactory-installed options. Two labels on your vehicle show how much weight it was designed to carry, the Tire and Loading Information label and the Certiﬁcation/Tire label.

{ CAUTION:

Do not load the vehicle any heavier than the Gross Vehicle Weight Rating (GVWR), or either the maximum front or rear Gross Axle Weight Rating (GAWR). If you do, parts on the vehicle can break, and it can change the way your vehicle handles. These could cause you to lose control and crash. Also, overloading can shorten the life of the vehicle.

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The Tire and Loading Information label shows the number of occupant seating positions (A), and the maximum vehicle capacity weight (B) in kilograms and pounds. The Tire and Loading Information label also shows the size of the original equipment tires (C) and the recommended cold tire inﬂation pressures (D). For more information on tires and inﬂation see Tires on page 5-58 and Inﬂation - Tire Pressure on page 5-65. There is also important loading information on the vehicle Certiﬁcation/Tire label. It tells you the Gross Vehicle Weight Rating (GVWR) and the Gross Axle Weight Rating (GAWR) for the front and rear axle. See “Certiﬁcation/Tire Label” later in this section.

Tire and Loading Information Label

Label Example

A vehicle speciﬁc Tire and Loading Information label is attached to the center pillar (B-pillar). With the driver’s door open, you will ﬁnd the label attached below the door lock post (striker).

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Steps for Determining Correct Load Limit 1. Locate the statement “The combined weight of occupants and cargo should never exceed XXX kg or XXX lbs” on your vehicle’s placard. 2. Determine the combined weight of the driver

and passengers that will be riding in your vehicle.

3. Subtract the combined weight of the driver and passengers from XXX kg or XXX lbs.

4. The resulting ﬁgure equals the available

amount of cargo and luggage load capacity. For example, if the “XXX” amount equals 1400 lbs and there will be ﬁve 150 lb passengers in your vehicle, the amount of available cargo and luggage load capacity is 650 lbs (1400 − 750 (5 x 150) = 650 lbs).

5. Determine the combined weight of luggage and cargo being loaded on the vehicle. That weight may not safely exceed the available cargo and luggage load capacity calculated in Step 4.

6. If your vehicle will be towing a trailer, the load

from your trailer will be transferred to your vehicle. Consult this manual to determine how this reduces the available cargo and luggage load capacity of your vehicle. See Towing a Trailer on page 4-48 for important information on towing a trailer, towing safety rules and trailering tips.

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Example 1

Example 2

Item

Description Vehicle Capacity Weight for Example 1 = Subtract Occupant Weight 150 lbs (68 kg) × 2 = Available Occupant and Cargo Weight =

Total

Item

1,000 lbs (453 kg)

300 lbs (136 kg)

700 lbs (317 kg)

Description Vehicle Capacity Weight for Example 2 = Subtract Occupant Weight 150 lbs (68 kg) × 5 = Available Cargo Weight =

Total

1,000 lbs (453 kg)

750 lbs (136 kg)

250 lbs (113 kg)

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Example 3

Item

Description Vehicle Capacity Weight for Example 3 = Subtract Occupant Weight 200 lbs (91 kg) × 5 = Available Cargo Weight =

Total

1,000 lbs (453 kg)

1,000 lbs (453 kg)

0 lbs (0 kg)

Refer to your vehicle’s Tire and Loading Information label for speciﬁc information about your vehicle’s capacity weight and seating positions. The combined weight of the driver, passengers, and cargo should never exceed your vehicle’s capacity weight. Your vehicle may have an electronically controlled air suspension system that automatically keeps your vehicle level as you load and unload your vehicle. See Electronically Controlled Air Suspension System on page 4-47 for additional information.

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Certiﬁcation/Tire Label

A vehicle speciﬁc Certiﬁcation/Tire label is found on the rear edge of the driver’s door. The label shows the size of your vehicle’s original tires and the inﬂation pressures needed to obtain the gross weight capacity of your vehicle. This is called Gross Vehicle Weight Rating (GVWR). The GVWR includes the weight of the vehicle, all occupants, fuel, cargo, and trailer tongue weight, if pulling a trailer. The Certiﬁcation/Tire label also tells you the maximum weights for the front and rear axles, called Gross Axle Weight Rating (GAWR).

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To ﬁnd out the actual loads on your front and rear axles, you need to go to a weigh station and weigh your vehicle. Your dealer can help you with this. Be sure to spread out your load equally on both sides of the centerline. Never exceed the GVWR for your vehicle, or the GAWR for either the front or rear axle. And, if you do have a heavy load, you should spread it out. Similar appearing vehicles may have different GVWRs and capacity weights. Please note your vehicle’s Certiﬁcation/Tire label or consult your dealer for additional details.

{ CAUTION:

Do not load the vehicle any heavier than the Gross Vehicle Weight Rating (GVWR), or either the maximum front or rear Gross Axle Weight Rating (GAWR). If you do, parts on the vehicle can break, and it can change the way your vehicle handles. These could cause you to lose control and crash. Also, overloading can shorten the life of the vehicle.

Using heavier suspension components to get added durability might not change your vehicle’s weight ratings. Ask your dealer to help you load your vehicle the right way. Notice: Overloading your vehicle may cause damage. Repairs would not be covered by your warranty. Do not overload your vehicle. If you put things inside your vehicle — like suitcases, tools, packages, or anything else — they will go as fast as the vehicle goes. If you have to stop or turn quickly, or if there is a crash, they will keep going.

{ CAUTION:

Things you put inside your vehicle can strike and injure people in a sudden stop or turn, or in a crash.

(cid:129) Put things in the cargo area of your

vehicle. Try to spread the weight evenly.

(cid:129) Never stack heavier things, like

suitcases, inside the vehicle so that some of them are above the tops of the seats.

CAUTION:

(Continued)

CAUTION:

(Continued)

(cid:129) Do not leave an unsecured child restraint

in your vehicle.

(cid:129) When you carry something inside the vehicle, secure it whenever you can.

(cid:129) Do not leave a seat folded down unless

you need to.

There is also important loading information for off-road driving in this manual. See “Loading Your Vehicle for Off-Road Driving” under Off-Road Driving on page 4-14.

Adding a Snow Plow or Similar Equipment Your vehicle was neither designed nor intended for a snow plow. Notice: Adding a snow plow or similar equipment to your vehicle can damage it, and the repairs would not be covered by warranty. Do not install a snow plow or similar equipment on your vehicle.

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Here are some important things to consider before recreational vehicle towing: (cid:129) What is the towing capacity of the towing vehicle?

Be sure to read the tow vehicle manufacturer’s recommendations.

(cid:129) What is the distance that will be travelled? Some

vehicles have restrictions on how far and how long they can tow. Is the proper towing equipment going to be used? See your dealer/retailer or trailering professional for additional advice and equipment recommendations. Is the vehicle ready to be towed? Just as preparing the vehicle for a long trip, make sure the vehicle is prepared to be towed. See Before Leaving on a Long Trip on page 4-28.

Towing

Towing Your Vehicle To avoid damage, the disabled vehicle should be towed with all four wheels off the ground. Consult your dealer/ retailer or a professional towing service if the disabled vehicle must be towed. See Roadside Assistance Program on page 7-7. To tow the vehicle behind another vehicle for recreational purposes (such as behind a motorhome), see “Recreational Vehicle Towing” following.

Recreational Vehicle Towing Recreational vehicle towing means towing the vehicle behind another vehicle – such as behind a motorhome. The two most common types of recreational vehicle towing are known as dinghy towing and dolly towing. Dinghy towing is towing the vehicle with all four wheels on the ground. Dolly towing is towing the vehicle with two wheels on the ground and two wheels up on a device known as a dolly.

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(cid:129) (cid:129) Dinghy Towing Two-Wheel-Drive Vehicles

All-Wheel-Drive Vehicles (TrailBlazer SS) Notice: Towing an all-wheel-drive vehicle with all four wheels on the ground, or even with only two of its wheels on the ground, will damage drivetrain components. Do not tow an all-wheel-drive vehicle with any of its wheels on the ground. The vehicle was not designed to be towed with any of its wheels on the ground. If the vehicle must be towed, see “Towing Your Vehicle” earlier in this section.

If the vehicle is towed with all four wheels

Notice: on the ground, the drivetrain components could be damaged. The repairs would not be covered by the vehicle warranty. Do not tow the vehicle with all four wheels on the ground. Two-wheel-drive vehicles should not be towed with all four wheels on the ground. Two-wheel-drive transmissions have no provisions for internal lubrication while being towed. To properly tow these vehicles, they should be placed on a ﬂatbed truck or trailer.

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Four-Wheel-Drive Vehicles

Use the following procedure to dinghy tow a four-wheel-drive vehicle: 1. Position the vehicle being towed behind the tow

vehicle and shift the transmission to P (Park).

2. Turn the engine off, but leave the ignition in the

ACC/ACCESSORY position. 3. Firmly set the parking brake. 4. Securely attach the vehicle being towed to the tow

vehicle.

Four-wheel-drive vehicles can be dinghy towed if the proper procedures are followed. The transmission has no provisions for internal lubrication while being towed, so it is important that all the steps listed in this manual are followed to dinghy tow a four-wheel-drive vehicle.

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{ CAUTION:

Shifting a four-wheel-drive vehicle’s transfer case into N (Neutral) can cause the vehicle to roll even if the transmission is in P (Park). The driver or others could be injured. Make sure the parking brake is ﬁrmly set before the transfer case is shifted to N (Neutral).

Dolly Towing Front Towing (Front Wheels Off the Ground) Two-Wheel-Drive Vehicles

5. Shift the transfer case to Neutral. See “Shifting into

Neutral” under Four-Wheel Drive on page 2-30. 6. Release the parking brake only after the vehicle

being towed is ﬁrmly attached to the towing vehicle.

7. Turn the ignition to LOCK/OFF and remove the

key — the steering wheel will still turn.

After towing, see “Shifting Out of Neutral” under Four-Wheel Drive on page 2-30.

If a two-wheel-drive vehicle is towed with

Notice: the rear wheels on the ground, the transmission could be damaged. The repairs would not be covered by the vehicle warranty. Never tow the vehicle with the rear wheels on the ground.

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Four-Wheel-Drive Vehicles

Use the following procedure to dolly tow a four-wheel-drive vehicle from the front with the rear wheels on the ground: 1. Attach the dolly to the tow vehicle following the

dolly manufacturer’s instructions.

2. Drive the front wheels onto the dolly. 3. Shift the transmission to P (Park). 4. Firmly set the parking brake.

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{ CAUTION:

Shifting a four-wheel-drive vehicle’s transfer case into N (Neutral) can cause the vehicle to roll even if the transmission is in P (Park). The driver or others could be injured. Make sure the parking brake is ﬁrmly set before the transfer case is shifted to N (Neutral).

5. Shift the transfer case to Neutral. See “Shifting into

Neutral” under Four-Wheel Drive on page 2-30.

6. Secure the vehicle to the dolly following the

manufacturer’s instructions.

7. Release the parking brake only after the vehicle

being towed is ﬁrmly attached to the dolly.

8. Turn the ignition to LOCK/OFF. After towing, see “Shifting Out of Neutral” under Four-Wheel Drive on page 2-30.

Rear Towing (Rear Wheels Off the Ground)

Two-Wheel-Drive Vehicles Use the following procedure to dolly tow a two-wheel-drive vehicle from the rear: 1. Attach the dolly to the tow vehicle following the

dolly manufacturer’s instructions.

2. Drive the rear wheels onto the dolly. 3. Firmly set the parking brake. See Parking Brake on

page 2-34.

4. Put the transmission in P (Park). 5. Secure the vehicle to the dolly following the

manufacturer’s instructions.

6. Use an adequate clamping device designed for

towing to ensure that the front wheels are locked into the straight position.

7. Turn the ignition to LOCK/OFF.

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Four-Wheel-Drive Vehicles Use the following procedure to dolly tow a four-wheel-drive vehicle from the rear: 1. Attach the dolly to the tow vehicle following the

dolly manufacturer’s instructions.

2. Drive the rear wheels onto the dolly. 3. Firmly set the parking brake. See Parking Brake

on page 2-34.

4. Put the transmission in P (Park). 5. Secure the vehicle to the dolly following the

manufacturer’s instructions.

6. Use an adequate clamping device designed for

towing to ensure that the front wheels are locked into the straight position.

{ CAUTION:

Shifting a four-wheel-drive vehicle’s transfer case into N (Neutral) can cause the vehicle to roll even if the transmission is in P (Park). The driver or others could be injured. Make sure the parking brake is ﬁrmly set before the transfer case is shifted to N (Neutral).

7. Shift the transfer case to Neutral. See “Shifting into

Neutral” under Four-Wheel Drive on page 2-30.

8. Turn the ignition to LOCK/OFF. After towing, see “Shifting Out of Neutral” under Four-Wheel Drive on page 2-30.

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Electronically Controlled Air Suspension System With this feature, an electronically controlled air suspension system automatically keeps the vehicle level as it is loaded and unloaded. The system includes a compressor, two height sensors and two air springs supporting the rear axle. The system also has an internal clock to prevent overheating if the inﬂator is used for prolonged periods. If the system overheats, all leveling function stops until the system cools down. The ignition has to be on for the system to inﬂate, in order to raise the vehicle to the standard ride height after loading. The system can lower the vehicle to the standard ride height after unloading with the ignition on and also for up to 30 minutes after the ignition has been turned off. The compressor may be heard while it is operating when the vehicle is being loaded, and periodically as the system adjusts the vehicle to the standard ride height. Load leveling will not function normally with the inﬂator hose attached to the inﬂator outlet. Remove the inﬂator hose from the outlet during loading and unloading. If the vehicle is parked for an extended period of time, some bleed down of the suspension is normal. Upon starting the vehicle, proper height will be achieved.

Overload Protection The air suspension system is equipped with overload protection. Overload protection is designed to protect the air suspension system, and it is an indicator to the driver that the vehicle is overloaded. When the overload protection mode is on, it will not allow damage to the air compressor. However, do not overload the vehicle. See Loading the Vehicle on page 4-33. If the suspension remains at a low height, the rear axle load has exceeded GAWR (Gross Axle Weight Rating). When the overload protection mode is activated, the compressor operates for about 30 seconds to one minute without raising the vehicle depending on the amount of overload. This will continue each time the ignition is turned on until the rear axle load is reduced below GAWR. Indicator Light The indicator light on the inﬂator switch in the rear passenger compartment also serves as an indicator for internal system error. If the indicator light is ﬂashing without the load leveling function or the inﬂator being active, turn off the ignition. The next day turn on the ignition and check the indicator light. The vehicle can be driven with the light ﬂashing, but if it is, the vehicle should be serviced as soon as possible.

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Towing a Trailer

{ CAUTION:

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/ retailer 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/retailer 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.

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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.

(cid:129) Consider using a sway control. See “Hitches” later

in this section.

(cid:129) Do not tow a trailer at all during the ﬁrst 500 miles

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

(cid:129) Vehicles with an automatic transmissions can tow in D (Drive). Shift the transmission to a lower gear if the transmission shifts too often under heavy loads and/or hilly conditions.

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

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.

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(cid:129) (cid:129) (cid:129) (cid:129) (cid:129) Look in the following chart to ﬁnd the maximum trailer weight for the vehicle.

Vehicle

Axle Ratio

2WD TrailBlazer (4.2 L L6 Engine)

4WD TrailBlazer (4.2 L L6 Engine)

2WD TrailBlazer (5.3 L V8 Engine)

4WD TrailBlazer (5.3 L V8 Engine)

3.42
3.73
4.10
3.42
3.73
4.10
3.42
3.73
3.42
3.73

Max. Trailer Wt.

5,400 lbs (2 449 kg) 5,900 lbs (2 676 kg) 6,400 lbs (2 903 kg) 5,200 lbs (2 359 kg) 5,700 lbs (2 585 kg) 6,200 lbs (2 812 kg) 6,300 lbs (2 858 kg) 6,800 lbs (3 084 kg) 6,100 lbs (2 767 kg) 6,600 lbs (2 994 kg)

*GCWR

10,000 lbs (4 536 kg) 10,500 lbs (4 763 kg) 11,000 lbs (4 990 kg) 10,000 lbs (4 536 kg) 10,500 lbs (4 763 kg) 11,000 lbs (4 990 kg) 11,000 lbs (4 990 kg) 11,500 lbs (5 216 kg) 11,000 lbs (4 990 kg) 11,500 lbs (5 216 kg)

**2WD TrailBlazer SS (6.0 L V8 Engine) **AWD TrailBlazer SS (6.0 L V8 Engine) *The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversion. The GCWR for the vehicle should not be exceeded. **TrailBlazer SS models with the 6.0L engine require Performance Sport Package (B4U).

11,500 lbs (5 216 kg)

11,500 lbs (5 216 kg)

6,800 lbs (3 084 kg)

6,600 lbs (2 994 kg)

4.10

4.10

Ask your dealer for our trailering information or advice, or write us at our Customer Assistance Offices. See Customer Assistance Offices on page 7-6 for more information.

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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 Loading the Vehicle on page 4-33 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 or 400 lbs (181 kg) with a weight carrying hitch. The trailer tongue weight (A) should be 10 percent to 15 percent of the total loaded trailer weight, up to a maximum of 900 lbs (408 kg) with a weight distributing hitch.

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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. 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 your trailering capacity more than the total of the additional weight.

Consider the following example: A vehicle model base weight is 5,500 lbs (2 495 kg); 2,800 lbs (1 270 kg) at the front axle and 2,700 lbs (1 225 kg) at the rear axle. It has a GVWR of 7,200 lbs (3 266 kg), a RGAWR of 4,000 lbs (1 814 kg) and a GCWR (Gross Combination Weight Rating) of 14,000 lbs (6 350 kg). The trailer rating should be:

Expect tongue weight to be at least 10 percent of trailer weight (850 lbs (386 kg)) and because the weight is applied well behind the rear axle, the effect on the rear axle is greater than just the weight itself, as much as 1.5 times as much. The weight at the rear axle could be 850 lbs (386 kg) X 1.5 = 1,275 lbs (578 kg). Since the rear axle already weighs 2,700 lbs (1 225 kg), adding 1,275 lbs (578 kg) brings the total to 3,975 lbs (1 803 kg). This is very close to, but within the limit for RGAWR as well. The vehicle is set to trailer up to 8,500 lbs (3 856 kg).

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If the vehicle has many options and there is a front seat passenger and two rear seat passengers with some luggage and gear in the vehicle as well. 300 lbs (136 kg) could be added to the front axle weight and 400 lbs (181 kg) to the rear axle weight. The vehicle now weighs:

Weight is still below 7,200 lbs (3 266 kg) and you might think 700 additional pounds (318 kg) should be subtracted from the trailering capacity to stay within GCWR limits. The maximum trailer would only be 7,800 lbs (3 538 kg). You may go further and think the tongue weight should be limited to less than 1,000 lbs (454 kg) to avoid exceeding GVWR. But the effect on the rear axle must still be considered. Because the rear axle now weighs 3,100 lbs (1 406 kg), 900 lbs (408 kg) can be put on the rear axle without exceeding RGAWR. The effect of tongue weight is about 1.5 times the actual weight. Dividing the 900 lbs (408 kg) by 1.5 leaves only 600 lbs (272 kg) of tongue weight that can be handled.

Since tongue weight is usually at least 10 percent of total loaded trailer weight, expect that the largest trailer the vehicle can properly handle is 6,000 lbs (2 721 kg). 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. 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 on the B-pillar below the door latch or see Loading the Vehicle on page 4-33 for more information. 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. 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.

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Weight Distributing Hitches and Weight Carrying Hitches

(A) Body to Ground Distance, (B) Front of Vehicle

When using a weight-distributing hitch, the hitch must be adjusted so that the distance (A) remains the same both before and after coupling the trailer to the tow vehicle. 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.

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If pulling a trailer that, when loaded, will weigh more than 4,000 lbs (1 814 kg) be sure to use a properly mounted weight-distributing hitch and sway control of the proper size. This equipment is very important for proper vehicle loading and good handling when driving. Always use a sway control if the trailer will weigh more than these limits. Ask a hitch dealer about sway controls. 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. 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 1,500 lbs (680 kg) 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 brakes cannot tap into the vehicle’s hydraulic brake system.

Driving with a Trailer

{ CAUTION:

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. To maximize safety when towing a trailer:

(cid:129) Have the exhaust system inspected for leaks and make necessary repairs before starting a trip.

(cid:129) Never drive with the liftgate, trunk/hatch, or

rear-most window open.

(cid:129) Fully open the air outlets on or under the

instrument panel.

(cid:129) 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 2-38.

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. 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.

4-55

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 can tow in D (Drive). Shift the transmission to a lower gear if the transmission shifts too often under heavy loads and/or hilly conditions. 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 the transmission in P (Park) for a few minutes before turning the engine off. If the overheat warning comes on, see Engine Overheating on page 5-35.

4-56

Parking on Hills

{ CAUTION:

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. Turn the wheels into the curb if facing downhill or into traffic if facing uphill.

2. Have someone place chocks under the trailer

wheels.

3. When the wheel chocks are in place, release the

brake pedal until the chocks absorb the load.

4. Reapply the brake pedal. Then apply the parking

brake and shift into P (Park).

5. Release the brake pedal.

{ CAUTION:

It can be dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake ﬁrmly set. The vehicle can roll. If the engine has been left running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when on fairly level ground, use the steps that follow. Always put the shift lever fully in P (Park) with the parking brake ﬁrmly set. If the transfer case on four-wheel drive vehicles is in N (Neutral), the vehicle will be free to roll, even if the shift lever is in P (Park). Be sure the transfer case is in a drive gear — not in N (Neutral). See Four-Wheel Drive on page 2-30.

4-57

Leaving After Parking on a Hill 1. Apply and hold the brake pedal while you:

Trailer Wiring Harness

start the engine, shift into a gear, and release the parking brake.

2. Let up on the brake pedal. 3. Drive slowly until the trailer is clear of the chocks. 4. Stop and have someone pick up and store the

chocks.

Maintenance When Trailer Towing The vehicle needs service more often when pulling a trailer. See this manual’s Maintenance Schedule or 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.

4-58

The vehicle may have a seven-wire trailer towing harness. This harness may have a seven-pin universal heavy-duty trailer connector (if equipped with the trailering package) that is attached to a bracket on the hitch platform or included with the four-pin trailer towing harness. If the vehicle is not equipped with the heavy-duty trailer connector, one may be purchased from your dealer/retailer.

(cid:129) (cid:129) (cid:129) The seven-wire harness contains the following trailer circuits: (cid:129) Yellow: Left Stop/Turn Signal (cid:129) Dark Green: Right Stop/Turn Signal (cid:129) Brown: Running Lamps (cid:129) White: Ground

Light Green: Back-up Lamps

(cid:129) Dark Blue: Electric Brakes (cid:129) Red: Battery Feed (The chassis wiring ring terminal

must be fastened to a stud on the underhood electrical center before the trailer feed will become active.)

If towing a light-duty trailer with a standard four-way round pin connector, an adapter connector is available from your dealer/retailer. If charging a remote (non-vehicle) battery, turn on the headlamps to boost the vehicle system voltage and properly charge the battery. The vehicle is also equipped with wiring for an electric trailer brake controller. These wires are located inside the vehicle on the driver side under the instrument panel. These wires should be connected to an electric trailer brake controller by your dealer/retailer or a qualiﬁed service center.

The vehicle may be equipped with a four-pin trailer towing harness. This harness has a four-pin trailer connector that contains the following trailer circuits: (cid:129) Yellow: Left Stop/Turn Signal (cid:129) Dark Green: Right Stop/Turn Signal (cid:129) Brown: Running Lamps (cid:129) White: Ground This harness also contains the following trailer circuits that are not connected to the four-pin trailer connector:

Light Green: Back-Up Lamps

(cid:129) Dark Blue: Electric Brakes (cid:129) Red: Battery Feed If the vehicle is a TrailBlazer SS, a trailer wiring harness extension, and instructions for installing this extension, were provided when the vehicle was delivered. This extension will allow the vehicle’s trailer wiring harness to be more easily accessible. There is a four-way connector on the harness. A seven-way adapter plug is also included if the trailer requires it.

4-59

(cid:129) (cid:129) ✍ NOTES

4-60

Section 5

Service and Appearance Care

Service ............................................................5-3
Accessories and Modiﬁcations ..........................5-3
California Proposition 65 Warning .....................5-4
California Perchlorate Materials Requirements .....5-4
Doing Your Own Service Work .........................5-4
Adding Equipment to the Outside of

the Vehicle .................................................5-5
Fuel ................................................................5-5
Gasoline Octane ............................................5-6
Gasoline Speciﬁcations ....................................5-6
California Fuel ...............................................5-6
Additives .......................................................5-7
Fuels in Foreign Countries ...............................5-7
Filling the Tank ..............................................5-8
Filling a Portable Fuel Container .....................5-10
Checking Things Under the Hood ....................5-10
Hood Release ..............................................5-11
Engine Compartment Overview .......................5-12
Engine Oil ...................................................5-18
Engine Oil Life System ..................................5-22
Engine Air Cleaner/Filter ................................5-24
Automatic Transmission Fluid .........................5-25
Cooling System ............................................5-28
Engine Coolant .............................................5-29
Radiator Pressure Cap ..................................5-34
Engine Overheating .......................................5-35

Engine Fan Noise .........................................5-36
Power Steering Fluid .....................................5-37
Windshield Washer Fluid ................................5-38
Brakes ........................................................5-39
Battery ........................................................5-42
Jump Starting ...............................................5-43
All-Wheel Drive ..............................................5-48
Rear Axle .......................................................5-49
Four-Wheel Drive ............................................5-50
Front Axle ......................................................5-51
Headlamp Aiming ...........................................5-52
Bulb Replacement ..........................................5-52
Halogen Bulbs ..............................................5-52
Taillamps and Turn Signal Lamps ...................5-53
License Plate Lamp ......................................5-54
Replacement Bulbs .......................................5-54
Windshield Wiper Blade Replacement ..............5-55
Tires ..............................................................5-58
Winter Tires .................................................5-59
Tire Sidewall Labeling ...................................5-60
Tire Terminology and Deﬁnitions .....................5-62
Inﬂation - Tire Pressure .................................5-65
High-Speed Operation ...................................5-66
Tire Pressure Monitor System .........................5-67

5-1

Section 5

Service and Appearance Care

Tire Pressure Monitor Operation .....................5-69
Tire Inspection and Rotation ...........................5-73
When It Is Time for New Tires .......................5-74
Buying New Tires .........................................5-75
Different Size Tires and Wheels ......................5-77
Uniform Tire Quality Grading ..........................5-78
Wheel Alignment and Tire Balance ..................5-80
Wheel Replacement ......................................5-80
Tire Chains ..................................................5-81
If a Tire Goes Flat ........................................5-82
Tire Sealant and Compressor Kit ....................5-83
Tire Sealant and Compressor Kit Storage .........5-92
Changing a Flat Tire .....................................5-93
Removing the Spare Tire and Tools ................5-94
Removing the Flat Tire and Installing the

Spare Tire ................................................5-97
Secondary Latch System ..............................5-103
Storing a Flat or Spare Tire and Tools ...........5-106
Spare Tire .................................................5-109
Appearance Care ..........................................5-109
Interior Cleaning .........................................5-109
Fabric/Carpet ..............................................5-111
Leather ......................................................5-111
Instrument Panel, Vinyl, and Other

Plastic Surfaces .......................................5-112

Care of Safety Belts ....................................5-112
Weatherstrips .............................................5-112
Washing Your Vehicle ..................................5-113
Cleaning Exterior Lamps/Lenses ....................5-113
Finish Care ................................................5-114
Windshield, Backglass, and Wiper Blades .......5-114
Aluminum Wheels .......................................5-115
Tires .........................................................5-115
Sheet Metal Damage ...................................5-116
Finish Damage ...........................................5-116
Underbody Maintenance ...............................5-116
Chemical Paint Spotting ...............................5-116
Vehicle Identiﬁcation .....................................5-117
Vehicle Identiﬁcation Number (VIN) ................5-117
Service Parts Identiﬁcation Label ...................5-117
Electrical System ..........................................5-118
Add-On Electrical Equipment .........................5-118
Headlamps .................................................5-118
Windshield Wiper Fuses ...............................5-118
Power Windows and Other Power Options ......5-118
Fuses and Circuit Breakers ..........................5-119
Engine Compartment Fuse Block ...................5-119
Rear Underseat Fuse Block ..........................5-122
Capacities and Speciﬁcations ........................5-125

5-2

Service For service and parts needs, visit your dealer/retailer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks:

Accessories and Modiﬁcations When non-dealer/non-retailer accessories are added to the vehicle, they 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. Some of these accessories could even cause malfunction or damage not covered by the vehicle warranty. GM Accessories are designed to complement and function with other systems on the vehicle. Your GM dealer/retailer can accessorize the vehicle using genuine GM Accessories. When you go to your GM dealer/retailer and ask for GM Accessories, you will know that GM-trained and supported service technicians will perform the work using genuine GM Accessories. Also, see Adding Equipment to Your Airbag-Equipped Vehicle on page 1-68.

5-3

Doing Your Own Service Work

{ CAUTION:

You can be injured and the vehicle could be damaged if you try to do service work on a vehicle without knowing enough about it.

(cid:129) Be sure you have sufficient knowledge,

experience, the proper replacement parts, and tools before attempting any vehicle maintenance task.

(cid:129) Be sure to use the proper nuts, bolts, and

other fasteners. English and metric fasteners can be easily confused. If the wrong fasteners are used, parts can later break or fall off. You could be hurt.

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 (including some inside the vehicle), many ﬂuids, and some component wear by-products contain and/or emit these chemicals.

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

5-4

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. The 8th digit of the Vehicle Identiﬁcation Number (VIN) shows the code letter or number that identiﬁes the vehicle’s engine. The VIN is at the top left of the instrument panel. See Vehicle Identiﬁcation Number (VIN) on page 5-117.

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 7-16. This vehicle has an airbag system. Before attempting to do your own service work, see Servicing Your Airbag-Equipped Vehicle on page 1-68. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Record on page 6-16.

Adding Equipment to the Outside of the Vehicle Things added to the outside of the vehicle can affect the airﬂow around it. This can cause wind noise and can affect fuel economy and windshield washer performance. Check with your dealer/retailer before adding equipment to the outside of the vehicle.

5-5

Gasoline Octane If the vehicle has the 4.2L L6 engine (VIN Code S) or the 5.3L V8 engine (VIN Code M), use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, you might notice an audible knocking noise when you drive, commonly referred to as spark knock. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, the engine needs service. If the vehicle has the 6.0L V8 engine (VIN Code H), use premium unleaded gasoline with a posted octane rating of 91 or higher. You can also use regular unleaded gasoline rated at 87 octane or higher, but the vehicle’s acceleration could be slightly reduced, and you might notice a slight audible knocking noise, commonly referred to as spark knock. If the octane is less than 87, you might notice a heavy knocking noise when you drive. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. Otherwise, you could damage the engine. If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, the engine needs service.

Gasoline Speciﬁcations 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 Additives on page 5-7
for additional information.

California Fuel 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 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 3-39. If this occurs, return to your authorized dealer/retailer 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.

5-6

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, you should not have to add anything 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, or if the vehicle experiences problems due to dirty injectors or valves, look for gasoline that is advertised as TOP TIER Detergent Gasoline. Also, your dealer/retailer has additives that will help correct and prevent most deposit-related problems. 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 10% ethanol must not be used in vehicles that were not designed for those fuels. 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 the life of spark plugs and the performance of the emission control system could be affected. The malfunction indicator lamp might turn on. If this occurs, return to your dealer/retailer for service.

Fuels in Foreign Countries If you plan on driving in another country outside the United States or Canada, the proper fuel might be hard to ﬁnd. 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.

5-7

Filling the Tank

{ CAUTION:

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 pump island. Turn off the engine when you are refueling. Do not smoke if you are near fuel or 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.

5-8

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.

{ CAUTION:

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 Washing Your Vehicle on page 5-113. 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. See Malfunction Indicator Lamp on page 3-39.

There may also be a light that comes on in the instrument panel to let you know if the gas cap is not properly installed. See Check Gas Cap Light on page 3-47 for more information.

{ CAUTION:

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.

If you need a new fuel cap, be sure to get

Notice: the right type. Your dealer/retailer can get one for you. If you get the wrong type, it may not ﬁt properly. This may cause the malfunction indicator lamp to light and may damage the fuel tank and emissions system. See Malfunction Indicator Lamp on page 3-39.

5-9

Checking Things Under the Hood

{ CAUTION:

Things that burn can get on hot engine parts and start a ﬁre. These include liquids like fuel, oil, coolant, brake ﬂuid, windshield washer and other ﬂuids, and plastic or rubber. You or others could be burned. Be careful not to drop or spill things that will burn onto a hot engine.

Filling a Portable Fuel Container

{ CAUTION:

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:

(cid:129) Dispense fuel only into approved containers. (cid:129) 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.

(cid:129) 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.

(cid:129) Do not smoke while pumping fuel. (cid:129) Do not use a cellular phone while

pumping fuel.

5-10

Hood Release To open the hood:

1. Pull the handle with this symbol on it. It is located inside the vehicle under the instrument panel on the driver side.

2. Then go to the front of the vehicle and release the

secondary hood release.

3. Lift the hood, release the prop rod from its retainer,

and put the prop rod 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 prop rod. Remove the prop rod from its slot in the hood and return the prop to its retainer. Lower the hood 6 to 8 inches (15 to 20 cm) above the vehicle and release it to latch fully. Check to make sure the hood is closed and repeat the process if necessary.

5-11

Engine Compartment Overview When you open the hood on the 4.2L L6 engine, here is what you will see:

5-12

A. Engine Air Cleaner/Filter. See Engine Air

Cleaner/Filter on page 5-24.

G. Radiator Pressure Cap. See Radiator Pressure Cap

on page 5-34.

B. Engine Coolant Recovery Tank. See Cooling System

on page 5-28.

C. Windshield Washer Fluid Reservoir. See “Adding

Washer Fluid” under Windshield Washer Fluid on page 5-38.

D. Power Steering Fluid Reservoir. See Power Steering

Fluid on page 5-37.

E. Automatic Transmission Fluid Dipstick (Out of View).

See “Checking the Fluid Level” under Automatic Transmission Fluid on page 5-25.

F. Engine Oil Dipstick. See “Checking Engine Oil”

under Engine Oil on page 5-18.

H. Engine Oil Fill Cap. See “When to Add Engine Oil”

under Engine Oil on page 5-18.

I. Remote Negative (−) Terminal (Marked GND).

See Jump Starting on page 5-43.

J. Brake Master Cylinder Reservoir. See “Brake Fluid”

under Brakes on page 5-39.

K. Battery. See Battery on page 5-42. L. Engine Compartment Fuse Block. See Engine

Compartment Fuse Block on page 5-119.

5-13

When you open the hood on the 5.3L V8 engine, here is what you will see:

5-14

A. Engine Coolant Recovery Tank. See Cooling System

on page 5-28.

B. Engine Air Cleaner/Filter. See Engine Air

Cleaner/Filter on page 5-24.

C. Windshield Washer Fluid Reservoir. See “Adding

Washer Fluid” under Windshield Washer Fluid on page 5-38.

D. Engine Oil Fill Cap. See “When to Add Engine Oil”

under Engine Oil on page 5-18.

E. Automatic Transmission Fluid Dipstick. See “Checking the Fluid Level” under Automatic Transmission Fluid on page 5-25.

F. Engine Oil Dipstick. See “Checking Engine Oil”

under Engine Oil on page 5-18.

G. Radiator Pressure Cap. See Radiator Pressure Cap

on page 5-34.

H. Remote Negative (−) Terminal (Marked GND).

See Jump Starting on page 5-43.

I. Power Steering Fluid Reservoir. See Power Steering

Fluid on page 5-37.

J. Brake Master Cylinder Reservoir. See “Brake Fluid”

under Brakes on page 5-39.

K. Engine Compartment Fuse Block. See Engine

Compartment Fuse Block on page 5-119.

L. Battery. See Battery on page 5-42.

5-15

When you open the hood on the 6.0L V8 TrailBlazer SS engine, here is what you will see:

5-16

A. Engine Coolant Recovery Tank. See Cooling System

on page 5-28.

B. Engine Air Cleaner/Filter. See Engine Air

Cleaner/Filter on page 5-24.

C. Windshield Washer Fluid Reservoir. See “Adding

Washer Fluid” under Windshield Washer Fluid on page 5-38.

D. Engine Oil Fill Cap (Under Engine Cover).

See “When to Add Engine Oil” under Engine Oil on page 5-18.

E. Engine Oil Dipstick (Out of View). See “Checking

Engine Oil” under Engine Oil on page 5-18.

F. Automatic Transmission Fluid Dipstick.

See “Checking the Fluid Level” under Automatic Transmission Fluid on page 5-25.

G. Radiator Pressure Cap. See Radiator Pressure Cap

on page 5-34.

H. Remote Negative (−) Terminal (Marked GND).

See Jump Starting on page 5-43.

I. Power Steering Fluid Reservoir. See Power Steering

Fluid on page 5-37.

J. Brake Master Cylinder Reservoir. See “Brake Fluid”

under Brakes on page 5-39.

K. Engine Compartment Fuse Block. See Engine

Compartment Fuse Block on page 5-119.

L. Battery. See Battery on page 5-42.

5-17

Engine Oil Checking Engine Oil It is a good idea to check the engine oil every time you get fuel. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. The engine oil dipstick handle is a yellow loop. See Engine Compartment Overview on page 5-12
for the location of the engine oil dipstick. 1. Turn off the engine and give the oil several minutes to drain back into the oil pan. If you do not do this, the oil dipstick might not show the actual level.

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

L6 Engine

V8 Engine

If the oil is below the L mark for the L6 engine or the cross-hatched area at the tip of the dipstick for the V8 engine, add at least one quart/liter of the recommended oil. This section explains what kind of oil to use. For engine oil crankcase capacity, see Capacities and Speciﬁcations on page 5-125.

5-18

Notice: Do not add too much oil. If the engine has so much oil that the oil level gets above the cross-hatched area (F) that shows the proper operating range for the L6 engine or above the cross-hatched area for the V8 engine, the engine could be damaged.

See Engine Compartment Overview on page 5-12 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 you are through. 6.0L V8 (VIN Code H) Engine Only Remove the engine cover to access the engine oil ﬁll cap:

1. Remove the screw in the center of the cover. 2. Remove the cover from the stud on the driver side. 3. Pull the cover up and off the bracket. 4. Reverse the steps to reinstall.

Except 6.0L V8

(VIN Code H) Engine

6.0L V8 (VIN Code H)

Engine

5-19

What Kind of Engine Oil to Use Except Vehicles with 6.0L V8 (VIN Code H) Engine Look for three things:

(cid:129) SAE 5W-30

SAE 5W-30 is best for the vehicle. These numbers on an oil container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 20W-50.

(cid:129) American Petroleum Institute (API) starburst

symbol

Oils meeting these requirements should have the starburst symbol on the container. This symbol indicates that the oil has been certiﬁed by the American Petroleum Institute (API).

Notice: Use only engine oil identiﬁed as meeting GM Standard GM6094M and showing the American Petroleum Institute Certiﬁed For Gasoline Engines starburst symbol. Failure to use the recommended oil can result in engine damage not covered by the vehicle warranty.

(cid:129) GM6094M

Use only an oil that meets GM Standard GM6094M.

5-20

For 6.0L V8 (VIN Code H) Engine Vehicles Only Look for three things:

Notice: Using oils that do not have the GM4718M Standard designation can cause engine damage not covered by the vehicle warranty. (cid:129) SAE 5W-30

SAE 5W-30 is best for the vehicle. These numbers on an oil container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 20W-50.

(cid:129) American Petroleum Institute (API) starburst

symbol

Oils meeting these requirements should have the starburst symbol on the container. This symbol indicates that the oil has been certiﬁed by the American Petroleum Institute (API).

(cid:129) GM4718M

This vehicle’s engine requires a special oil meeting GM Standard GM4718M. Oils meeting this standard may be identiﬁed as synthetic. However, not all synthetic oils will meet this GM standard. Use only an oil that meets GM Standard GM4718M.

This vehicle’s engine was ﬁlled at the factory with a Mobil 1® synthetic oil meeting all requirements for this vehicle.

5-21

Substitute Engine Oil: When adding oil to maintain engine oil level, oil meeting GM Standard GM4718M might not be available. You can add substitute oil designated SAE 5W-30 with the starburst symbol at all temperatures. Substitute oil not meeting GM Standard GM4718M should not be used for an oil change. Cold Temperature Operation Except Vehicles with 6.0L V8 (VIN Code H) Engine If in an area of extreme cold, where the temperature falls below −20°F (−29°C), use either an SAE 5W-30
synthetic oil or an SAE 0W-30 engine oil. Both provide easier cold starting for the engine at extremely low temperatures. Always use an oil that meets the required speciﬁcation, GM6094M. See “What Kind of Engine Oil to Use” for more information. Engine Oil Additives / Engine Oil Flushes Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM standards 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.

5-22

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 engine revolutions and engine temperature, and not on mileage. 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 engine oil light comes on, and, if the vehicle has a Driver Information Center (DIC), a CHANGE ENGINE OIL message comes on. See Change Engine Oil Light on page 3-43 and DIC Warnings and Messages on page 3-51. Change the oil as soon as possible within the next 600 miles (1 000 km). It is possible that, if driving under the best conditions, the oil life system might not indicate that an oil change is necessary for over a year. However, the engine oil and ﬁlter must be changed at least once a year and at this time the system must be reset. Your dealer/retailer has trained people who will perform this work using genuine parts and reset the system. It is also important to check the oil regularly and keep it at the proper level. If the system is ever reset accidentally, the oil must be changed at 3,000 miles (5 000 km) since the last oil change. Remember to reset the oil life system whenever the oil is changed.

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, 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.

How to Reset the Engine Oil Life System The Engine Oil Life System calculates when to change the engine oil and ﬁlter based on vehicle use. Whenever the oil is changed, reset the system so it can calculate when the next oil change is required. If a situation occurs where the oil is changed prior to a change engine oil light or CHANGE ENGINE OIL message being turned on, reset the system. To reset the Engine Oil Life System: 1. Turn the ignition key to ON/RUN with the

engine off.

2. Fully press and release the accelerator pedal slowly

three times within ﬁve seconds. The change engine oil light will ﬂash while the system is resetting.

3. When the light stops ﬂashing, turn the key to

LOCK/OFF.

If the light/message comes back on when the vehicle is started, the engine oil life system has not reset. Repeat the procedure.

5-23

How to Inspect the Engine Air Cleaner/Filter To inspect the air cleaner/ﬁlter remove the ﬁlter from the vehicle and lightly shake the ﬁlter to release loose dust and dirt. If the ﬁlter remains caked with dirt, a new ﬁlter is required. To inspect or replace the engine air cleaner/ﬁlter, do the following: 1. Remove the screws on the engine air cleaner/ﬁlter

and lift off the cover.

2. Remove the air cleaner/ﬁlter from the housing. Care should be taken to dislodge as little dirt as possible.

3. Inspect or replace the engine air cleaner/ﬁlter. 4. Reinstall the cover and tighten the screws.

Engine Air Cleaner/Filter

See Engine Compartment Overview on page 5-12
for the location of the engine air cleaner/ﬁlter.

4.2L L6 Engine shown,

5.3L and 6.0L V8
Engines similar

When to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/ﬁlter at the Maintenance II intervals and replace at the ﬁrst oil change after each 50,000 mile (80 000 km) interval. See Scheduled Maintenance on page 6-4 for more information. If you are driving in dusty/dirty conditions, inspect the ﬁlter at each engine oil change.

5-24

{ CAUTION:

Operating the engine with the air cleaner/ﬁlter off can cause you or others to be burned. The air cleaner not only cleans the air; it helps to stop ﬂames if the engine backﬁres. If it is not there and the engine backﬁres, you could be burned. Do not drive with it off, and be careful working on the engine with the air cleaner/ﬁlter off.

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 Additional Required Services on page 6-6, and be sure to use the transmission ﬂuid listed in Recommended Fluids and Lubricants on page 6-12.

If the air cleaner/ﬁlter is off, a backﬁre can

Notice: cause a damaging engine ﬁre. And, dirt can easily get into the engine, which will damage it. Always have the air cleaner/ﬁlter in place when you are driving.

5-25

To get the right reading, the ﬂuid should be at normal operating temperature, which is 180°F to 200°F (82°C to 93°C). Get the vehicle warmed up by driving about 15 miles (24 km) when outside temperatures are above 50°F (10°C). If it is colder than 50°F (10°C), drive the vehicle in 3 (Third) until the engine temperature gage 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 50°F (10°C) or more. If it is colder than 50°F (10°C), you may have to idle the engine longer. Should the ﬂuid level be low during this cold check, you must check the ﬂuid hot before adding ﬂuid. Checking the ﬂuid hot will give a more accurate reading of the ﬂuid level.

How to Check Automatic Transmission Fluid Because this operation can be a little difficult, you may choose to have this done at the dealer/retailer service department. If you do it yourself, be sure to follow all the instructions here, or you could get a false reading on the dipstick. Notice: Too much or too little ﬂuid can damage your 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 you check your transmission ﬂuid. Wait at least 30 minutes before checking the transmission ﬂuid level if you have been driving: (cid:129) When outside temperatures are above 90°F (32°C). (cid:129) At high speed for quite a while.

In heavy traffic — especially in hot weather.

(cid:129) While pulling a trailer.

5-26

(cid:129) Checking the Fluid Level Prepare the vehicle as follows: 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 your 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, follow these steps: 1. Flip the handle up and then remove 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 5-12
for more information on location.

2. Reinstall it back in all the way, wait three seconds and then pull it back out again. If the dipstick does not go down the tube easily, turn the blade and try again until it is fully inserted in the tube.

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.

4. If the ﬂuid level is in the acceptable range, reinstall the dipstick back in all the way; then ﬂip the handle down to lock the dipstick in place.

Consistency of Readings Always check the ﬂuid level at least twice using the procedure described previously. Consistency (repeatable readings) is important to maintaining proper ﬂuid level. If inconsistent readings persist, contact your dealer/retailer.

5-27

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 6-12. 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 one pint (0.5 L). Do not overﬁll. Notice: Use of the incorrect automatic transmission ﬂuid may damage the vehicle, and the damages may not be covered by the vehicle’s warranty. Always use the automatic transmission ﬂuid listed in Recommended Fluids and Lubricants on page 6-12. (cid:129) After adding ﬂuid, recheck the ﬂuid level as described under “How to Check Automatic Transmission Fluid” earlier in this section.

(cid:129) 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.

5-28

Cooling System The cooling system allows the engine to maintain the correct working temperature.

5.3L V8 Engine shown, 4.2L L6 and 6.0L V8 Engines

similar

A. Coolant Recovery Tank B. Radiator Pressure Cap C. Engine Fan

{ CAUTION:

An electric engine cooling fan under the hood can start up even when the engine is not running and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.

{ CAUTION:

Heater and radiator hoses, and other engine parts, can be very hot. Do not touch them. If you do, you can be burned. Do not run the engine if there is a leak. If you run the engine, it could lose all coolant. That could cause an engine ﬁre, and you could be burned. Get any leak ﬁxed before you drive the vehicle.

Notice: Using coolant other than DEX-COOL® can cause premature engine, heater core, or radiator corrosion. In addition, the engine coolant could require changing sooner, at 30,000 miles (50 000 km) or 24 months, whichever occurs ﬁrst. Any repairs would not be covered by the vehicle warranty. Always use DEX-COOL® (silicate-free) coolant in the vehicle.

Engine Coolant The cooling system in the vehicle is ﬁlled with DEX-COOL®. This coolant is designed to remain in the vehicle for ﬁve years or 150,000 miles (240 000 km), whichever occurs ﬁrst. The following explains the cooling system and how to check and add coolant when it is low. If there is a problem with engine overheating, see Engine Overheating on page 5-35.

5-29

What to Use

{ CAUTION:

Adding only plain water to the cooling system can be dangerous. Plain water, or some other liquid such as alcohol, can boil before the proper coolant mixture will. The vehicle’s coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, the engine could get too hot but you would not get the overheat warning. The engine could catch ﬁre and you or others could be burned. Use a 50/50 mixture of clean, drinkable water and DEX-COOL® coolant.

Use a 50/50 mixture of clean, drinkable water and DEX-COOL coolant. If using this mixture, nothing else needs to be added. This mixture: (cid:129) Gives freezing protection down to −34°F (−37°C),

outside temperature.

(cid:129) Gives boiling protection up to 265°F (129°C),

engine temperature.

(cid:129) Protects against rust and corrosion. (cid:129) Will not damage aluminum parts. (cid:129) Helps keep the proper engine temperature. Notice: If an improper coolant mixture is used, the engine could overheat and be badly damaged. The repair cost would not be covered by the vehicle warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core, and other parts. Notice: in the vehicle’s cooling system, the vehicle could be damaged. Use only the proper mixture of the engine coolant listed in this manual for the cooling system. See Recommended Fluids and Lubricants on page 6-12 for more information.

If extra inhibitors and/or additives are used

5-30

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 recovery tank. If the coolant inside the coolant recovery 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 FULL COLD mark, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant recovery tank, but be sure the cooling system is cool before this is done. The coolant level should be at least up to the FULL COLD mark. If it is not, there may be a leak in the cooling system.

How to Add Coolant to the Recovery Tank

{ CAUTION:

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.

Notice: This vehicle has a speciﬁc coolant ﬁll procedure. Failure to follow this procedure could cause the engine to overheat and be severely damaged. If coolant is needed, add the proper DEX-COOL coolant mixture at the coolant recovery tank. When the coolant in the coolant recovery tank is at the FULL COLD mark, start the vehicle.

5-31

How to Add Coolant to the Radiator

{ CAUTION:

An electric engine cooling fan under the hood can start up even when the engine is not running and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.

{ CAUTION:

Steam and scalding liquids from a hot cooling system can blow out and burn you badly. They are under pressure, and if you turn the surge tank pressure cap — even a little — they can come out at high speed. 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 if you ever have to turn the pressure cap.

5-32

If coolant is needed, add the proper mixture directly to the radiator, but be sure the cooling system is cool before this is done.

1. You can remove the radiator pressure cap when

the cooling system, including the radiator pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly counterclockwise about one full turn. If you hear a hiss, wait for that to stop. A hiss means there is still some pressure left.

2. Then keep turning the pressure cap. Remove the

pressure cap.

3. Fill the radiator with the proper DEX-COOL coolant mixture, up to the base of the ﬁller neck. See Engine Coolant on page 5-29 for more information about the proper coolant mixture.

4. Then ﬁll the coolant recovery tank to the

FULL COLD mark.

5. Put the cap back on the coolant recovery tank,

but leave the radiator pressure cap off.

5-33

8. Then replace the pressure cap. At any time during

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2009 Chevrolet Trailblazer Owners Manual