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{CAUTION:
Do not load your 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 your 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 your vehicle.
{CAUTION:
These loops, when used, are under a lot of force. Keep people away from the vicinity of the loops and any chains or cables during use. Always pull the vehicle straight out. Never pull on the loops at a sideways angle. The loops could break off and you or others could be injured from the chain or cable snapping back.
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Tire and Loading Information Label
Label Example
A vehicle specific Tire and Loading Information is attached to the vehicle’s center pillar (B-pillar). With the driver’s door open, you will find the label attached below the door latch post. 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 your vehicle’s original equipment tires (C) and the recommended cold tire inflation pressures (D). For more information on tires and inflation see Tires on page 5-53 and Inflation - Tire Pressure on page 5-60. There is also important information on the Certification/Tire label. It tells you the Gross Vehicle Weight Rating (GVWR) and the Gross Axle Weight Rating (GAWR) for the front and rear axles. See “Certification/Tire Label” later in this section. Steps for Determining Correct Load Limit 1. Locate the statement “The combined weight of occupants and cargo should never exceed XXX kg or XXX pounds” 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 kilograms or XXX pounds.
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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 4-59 for important information on towing a trailer, towing safety, and trailering tips.
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Example 1
Item
Description
Total
Vehicle Capacity Weight for Example 1 = Subtract Occupant Weight 150 lbs (68 kg) x 2 = Available Cargo Weight =
1,000 lbs (453 kg)
300 lbs (136 kg)
700 lbs (317 kg)
Example 2
Example 3
Item
Description
Total
Item
Description
Total
Vehicle Capacity Weight for Example 2 = Subtract Occupant Weight 150 lbs (68 kg) x 5 = Available Cargo Weight =
1,000 lbs (453 kg)
750 lbs (340 kg)
250 lbs (113 kg)
Vehicle Capacity Weight for Example 3 = Subtract Occupant Weight 200 lbs (91 kg) x 5 = Available Cargo Weight =
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, cargo and any accessories or equipment added to your vehicle after it left the factory should never exceed your vehicle’s capacity weight.
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Certification/Tire Label
Label Example
A vehicle specific Certification/Tire label is attached to the bottom section of the center pillar (B-pillar), on the driver’s side of the vehicle. The label shows the 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). 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.
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Never exceed the GVWR for your vehicle, or the GAWR for either the front or rear axle. 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 your 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 your 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 your vehicle.
Using heavier suspension components to get added durability might not change your 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:127) Put things in the cargo area of your
vehicle. Try to spread the weight evenly.
(cid:127) Never stack heavier things, like suitcases,
inside the vehicle so that some of them are above the tops of the seats.
(cid:127) Do not leave an unsecured child restraint
in your vehicle.
(cid:127) When you carry something inside the vehicle, secure it whenever you can.
(cid:127) 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 4-17.
Towing
Towing Your Vehicle Consult your dealer or a professional towing service if you need to have your disabled vehicle towed. See Roadside Assistance Program on page 7-6. If you want to tow your 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 your vehicle behind another vehicle – such as behind a motorhome. The two most common types of recreational vehicle towing are known as “dinghy towing” (towing your vehicle with all four wheels on the ground) and “dolly towing” (towing your vehicle with two wheels on the ground and two wheels up on a device known as a “dolly”). With the proper preparation and equipment, many vehicles can be towed in these ways. See “Dinghy Towing” and “Dolly Towing,” following.
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Here are some important things to consider before you do recreational vehicle towing: (cid:127) What’s the towing capacity of the towing vehicle? Be sure you read the tow vehicle manufacturer’s recommendations.
(cid:127) How far will you tow? Some vehicles have
restrictions on how far and how long they can tow.
(cid:127) Do you have the proper towing equipment? See your dealer or trailering professional for additional advice and equipment recommendations. Is your vehicle ready to be towed? Just as you would prepare your vehicle for a long trip, you’ll want to make sure your vehicle is prepared to be towed. See Before Leaving on a Long Trip on page 4-42.
Dinghy Towing Use the following procedure to tow your vehicle: 1. Shift the transmission to NEUTRAL (N). 2. Turn the engine off, but leave the ignition in ON. 3. Firmly set the parking brake. 4. Securely attach the vehicle being towed to the
tow vehicle.
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{CAUTION:
Shifting an all-wheel-drive vehicle’s transfer case into NEUTRAL can cause your vehicle to roll even if the automatic transmission is in PARK (P) or the manual transmission is in any gear. You or others could be injured. Make sure the parking brake is firmly set before you shift the transfer case to NEUTRAL.
5. Shift the transfer case to NEUTRAL (N). See All-Wheel Drive on page 2-22 for the proper procedure to select the NEUTRAL position for your vehicle.
6. Put the transmission in PARK (P) for an automatic
transmission or in FIRST (1) for a manual transmission.
7. Release the parking brake only after the
vehicle being towed is firmly attached to the towing vehicle.
8. Turn the ignition off. After towing, see “Shifting Out of NEUTRAL” under All-Wheel Drive on page 2-22.
(cid:127) Dolly Towing Notice: Dolly towing your vehicle will damage drivetrain components. Do not dolly tow your vehicle. Your vehicle cannot be dolly towed. If you must tow your vehicle behind another, use the dinghy towing procedure listed previously.
Towing a Trailer
{CAUTION:
If you do not use the correct equipment and drive properly, you can lose control when you pull a trailer. For example, if the trailer is too heavy, the brakes may not work well — or even at all. You and your passengers could be seriously injured. Pull a trailer only if you have followed all the steps in this section. Ask your dealer for advice and information about towing a trailer with your vehicle.
Notice: Pulling a trailer improperly can damage your vehicle and result in costly repairs not covered by your warranty. To pull a trailer correctly, follow the advice in this part, and see your dealer for important information about towing a trailer with your vehicle. To identify the trailering capacity of your vehicle, you should read the information in “Weight of the Trailer” that appears later in this section. Trailering is different than just driving your 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. That’s the reason for this part. In it are 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 you pull a trailer.
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Three important considerations have to do with weight:
the weight of the trailer the weight of the trailer tongue and the weight on your vehicle’s tires
Weight of the Trailer How heavy can a trailer safely be? It depends on how you plan to use your rig. For example, speed, altitude, road grades, outside temperature and how much your vehicle is used to pull a trailer are all important. It can depend on any special equipment that you have on your 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.
If You Do Decide To Pull A Trailer If you do, here are some important points:
There are many different laws, including speed limit restrictions, having to do with trailering. Make sure your rig will be legal, not only where you live but also where you’ll be driving. A good source for this information can be state or provincial police.
(cid:127) Consider using a sway control. See “Hitches” later
in this section.
(cid:127) Don’t tow a trailer at all during the first 500 miles (800 km) your new vehicle is driven. Your engine, axle or other parts could be damaged. Then, during the first 500 miles (800 km) that you tow a trailer, don’t drive over 50 mph (80 km/h) and don’t make starts at full throttle. This helps your engine and other parts of your vehicle wear in at the heavier loads. If you have an automatic transmission, you can tow in DRIVE (D). You may want to shift the transmission to THIRD (3) or, if necessary, a lower gear if the transmission shifts too often under heavy loads and/or hilly conditions. If you have a manual transmission and you are towing a trailer, it is better not to use the highest gear.
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(cid:127) (cid:127) (cid:127) (cid:127) (cid:127) (cid:127) Use the following chart to determine how much your vehicle can weigh, based upon your vehicle model and options.
Engine
Axle Ratio
Maximum Trailer Weight
**GCWR
Automatic Transmission
Manual Transmission
4.56
4.56
4,500 lbs (2 041 kg)
9,500 lbs (4 309 kg)
3,000 lbs (1 364 kg)
8,000 lbs (3 629 kg)
**The Gross Combination Weight Rating (GCWR) in the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be exceeded.
You can ask your dealer for our trailering information or advice, or you can write us at the address listed in your Warranty and Owner Assistance Information Booklet.
In Canada, write to:
General Motors of Canada Limited Customer Communication Centre, 163-005
1908 Colonel Sam Drive Oshawa, Ontario L1H 8P74-61
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 your vehicle. The Gross Vehicle Weight (GVW) includes the curb weight of the vehicle, any cargo you may carry in it, and the people who will be riding in the vehicle. If you have a lot of options, equipment, passengers or cargo in your vehicle, it will reduce the tongue weight your vehicle can carry, which will also reduce the trailer weight your vehicle can tow. If you will tow a trailer, you must add the tongue load to the GVW because your vehicle will be carrying that weight, too. See Loading Your Vehicle on page 4-52 for more information about your vehicle’s maximum load capacity.
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The trailer tongue weight (A) should be 10 percent to 15 percent of the total loaded trailer weight (B), up to a maximum of 500 lbs (227 kg) with a weight carrying hitch or a weight distributing hitch. Do not exceed the maximum allowable tongue weight for your 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.
Your spare tire carrier is behind the tailgate. If your hitch extension is too short, the spare tire may interfere with trailer coupling or trailer tongue jack operation on some types of trailers. After you’ve loaded your trailer, weigh the trailer and then the tongue, separately, to see if the weights are proper. If they aren’t, you may be able to get them right simply by moving some items around in the trailer. Total Weight on Your Vehicle’s Tires Be sure your vehicle’s tires are inflated to the upper limit for cold tires. You’ll find these numbers on the Certification label at the rear edge of the driver’s door or see Loading Your Vehicle on page 4-52. Then be sure you don’t go over the GVW limit for your vehicle, or the GAWR, including the weight of the trailer tongue. If you use a weight distributing hitch, make sure you don’t go over the rear axle limit before you apply the weight distribution spring bars. Hitches It’s important to have the correct hitch equipment. Crosswinds, large trucks going by and rough roads are a few reasons why you’ll need the right hitch.
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.
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Trailering may also 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:
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). But let’s say your specific vehicle is equipped with some of the latest options and you have a front seat passenger and two rear seat passengers with some luggage and gear in the vehicle as well. You may add 300 lbs (136 kg) to the front axle weight and 400 lbs (181 kg) to the rear axle weight. Your vehicle now weighs:
You can 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 will be greater than just the weight itself, as much as 1.5 times as much. The weight at the
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Weight is still below 7,200 lbs (3 266 kg) and you may think that you should subtract 700 additional pounds (318 kg) from your trailering capacity to stay within GCWR limits. Your maximum trailer would only be 7,800 lbs (3 538 kg). You may go further and think you must limit tongue weight to less than 1,000 lbs (454 kg) to avoid exceeding GVWR.
But, you must still consider the effect on the rear axle. Because your rear axle now weighs 3,100 lbs (1 406 kg), you can only put 900 lbs (408 kg) 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 you with being able to handle only 600 lbs (272 kg) of tongue weight. Since tongue weight is usually at least 10 percent of total loaded trailer weight, you can expect that the largest trailer your vehicle can properly handle is 6,000 lbs (2 721 kg). It is important that you make sure your vehicle does not exceed any of its ratings — GCWR, GVWR, RGAWR, Maximum Trailer Rating or Tongue Weight. The only way to be sure you are not exceeding any of these ratings is to weigh your vehicle and trailer. Safety Chains You should always attach chains between your vehicle and your 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 you can turn with your rig. Never allow safety chains to drag on the ground.
Trailer Brakes If your trailer weighs more than 1,500 lbs (680 kg) loaded, then it needs its own brakes – and they must be adequate. Be sure to read and follow the instructions for the trailer brakes so you’ll be able to install, adjust and maintain them properly. Your trailer brake system can tap into the vehicle’s hydraulic brake system only if:
The trailer parts can withstand 3,000 psi (20 650 kPa) of pressure. The trailer’s brake system will use less than 0.02 cubic inch (0.3 cc) of fluid from your vehicle’s master cylinder. Otherwise, both braking systems won’t work well. You could even lose your brakes. If everything checks out this far, make the brake tap at the port on the master cylinder that sends the fluid to the rear brakes. But don’t use copper tubing for this. If you do, it will bend and finally break off. Use steel brake tubing. Driving with a Trailer Towing a trailer requires a certain amount of experience. Before setting out for the open road, you’ll want to get to know your rig. Acquaint yourself with the feel of handling and braking with the added weight of the trailer.
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(cid:127) (cid:127) And always keep in mind that the vehicle you are driving is now a good deal longer and not nearly as responsive as your vehicle is by itself. Before you start, check all trailer hitch parts and attachments, safety chains, electrical connector, lamps, tires and mirror adjustment. If the trailer has electric brakes, start your vehicle and trailer moving and then apply the trailer brake controller by hand to be sure the brakes are working. This lets you check your electrical connection at the same time. During your 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 your vehicle without a trailer. This can help you avoid situations that require heavy braking and sudden turns. Passing You’ll need more passing distance up ahead when you’re towing a trailer. Because you’re a good deal longer, you’ll need to go much farther beyond the passed vehicle before you can return to your lane.
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Backing Up Hold the bottom of the steering wheel with one hand. Then, to move the trailer to the left, just 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. Your vehicle could be damaged. Avoid making very sharp turns while trailering. When you’re turning with a trailer, make wider turns than normal. Do this so your trailer won’t 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 your instrument panel will flash whenever you signal a turn or lane change. Properly hooked up, the trailer lamps will also flash, telling other drivers you’re about to turn, change lanes or stop. When towing a trailer, the arrows on your instrument panel will flash for turns even if the bulbs on the trailer are burned out. Thus, you may think drivers behind you are seeing your signal when they are not. It’s 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 you start down a long or steep downgrade. If you don’t shift down, you might have to use your brakes so much that they would get hot and no longer work well. If you have an automatic transmission, you can tow in DRIVE (D). You may want to shift the transmission to THIRD (3) or, if necessary, a lower gear selection if the transmission shifts too often under heavy loads and/or hilly conditions. If you have a manual transmission and you are towing a trailer, 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 you turn your engine off immediately after towing at high altitude on steep uphill grades, your vehicle may show signs similar to engine overheating. To avoid this, let the engine run while parked, preferably on level ground, with the automatic transmission in PARK (P) for a few minutes before turning the engine off. For manual transmissions, let the engine run while parked, preferably on level ground, with the transmission out of gear and the parking brake applied, for a few minutes before turning the engine off. If you do get the overheat warning, see Engine Overheating on page 5-27.
Parking on Hills
{CAUTION:
You really should not park your vehicle, with a trailer attached, on a hill. If something goes wrong, your rig could start to move. People can be injured, and both your vehicle and the trailer can be damaged.
But if you ever have to park your rig on a hill, here’s how to do it: 1. Apply your regular brakes, but don’t shift into
PARK (P) yet for an automatic transmission, or into gear for a manual transmission. Turn your 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 regular brakes until the chocks absorb the load.
4. Reapply the regular brakes. Then apply your parking
brake and shift into PARK (P) for an automatic transmission or into gear for a manual transmission.
5. Release the regular brakes.
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Trailer Wiring Harness Light-Duty Trailer Wiring Package If your vehicle is not equipped with a trailer towing package, the chassis harness will contain the following blunt cut circuits: (cid:127) Yellow: Left Stop/Turn Signal (cid:127) Dark Green: Right Stop/Turn Signal (cid:127) White: Ground (cid:127) Brown: Tail Lamps If you want to add on a trailer tow, it should be installed by your dealer or a qualified service center. Also, see Add-On Electrical Equipment on page 5-95 for more information.
When You Are Ready to Leave After Parking on a Hill 1. Apply your regular brakes and hold the pedal down
while you:
start your 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 Your vehicle will need service more often when you’re pulling a trailer. See the Maintenance Schedule for more on this. Things that are especially important in trailer operation are automatic transmission fluid, engine oil, axle lubricant, belts, cooling system and brake system. Each of these is covered in this manual, and the Index will help you find them quickly. If you’re trailering, it’s a good idea to review these sections before you start your trip. Check periodically to see that all hitch nuts and bolts are tight.
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(cid:127) (cid:127) (cid:127) Heavy-Duty Trailer Wiring Package
Four-Wire Harness Adapter If you need to tow a light-duty trailer with a standard four-way, flat pin connector, an adapter is available from your dealer.
Use this adapter to connect a standard four-way pin connector to the seven-wire harness on your vehicle.
If your vehicle is equipped with a trailer towing package, the rear bumper harness will have a seven-pin universal heavy-duty trailer connector attached to a bracket on the hitch platform. The trailer towing harness contains the following seven trailer circuits: (cid:127) Yellow: Left Stop/Turn Signal (cid:127) Dark Green: Right Stop/Turn Signal (cid:127) Brown: Taillamps (cid:127) White: Ground
Light Green: Back-up Lamps
(cid:127) Red: Battery Feed (cid:127) Dark Blue: Trailer Brake
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(cid:127) Trailer Recommendations You must subtract your hitch loads from the Cargo Weight Rating (CWR). CWR is the maximum weight of the load your vehicle can carry. It doesn’t include the weight of the people inside, but you can figure about 150 lbs. (68 kg) for each seat. The total cargo load must not be more than your vehicles CWR. Weigh your vehicle with your trailer attached, so that you won’t go over the GVWR or GAWR. If you are using a weight-distributing hitch, weigh the vehicle without the spring bars in place. You’ll get the best performance if you spread out the weight of your load the right way, and if you choose the correct hitch and trailer brakes. For more information see Towing a Trailer on page 4-59.
Connect the adapter with the tab pointing up. The flip cap on the vehicle’s seven-wire harness will lock onto the tab (see arrow in the previous graphic) and help hold the adapter in place. Plug the four-way pin connector onto the adapter.
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Section 5
Service and Appearance Care
Service ............................................................5-3
Accessories and Modifications ..........................5-3
California Proposition 65 Warning .....................5-4
Doing Your Own Service Work .........................5-4
Adding Equipment to the Outside ofYour Vehicle ..............................................5-5
Fuel ................................................................5-5
Gasoline Octane ............................................5-5
Gasoline Specifications ....................................5-5
California Fuel ...............................................5-6
Additives .......................................................5-6
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 ...................................................5-13
Engine Oil Life System ..................................5-16
Engine Air Cleaner/Filter ................................5-18
Automatic Transmission Fluid .........................5-19
Manual Transmission Fluid .............................5-22
Hydraulic Clutch ...........................................5-23
Engine Coolant .............................................5-24
Radiator Pressure Cap ..................................5-27
Engine Overheating .......................................5-27Cooling System ............................................5-29
Engine Fan Noise .........................................5-33
Power Steering Fluid .....................................5-34
Windshield Washer Fluid ................................5-35
Brakes ........................................................5-36
Battery ........................................................5-39
Jump Starting ...............................................5-40
All-Wheel Drive ..............................................5-44
Rear Axle .......................................................5-45
Front Axle ......................................................5-45
Headlamp Aiming ...........................................5-46
Bulb Replacement ..........................................5-49
Halogen Bulbs ..............................................5-49
Headlamps ..................................................5-49
Taillamps, Turn Signal, Stoplamps andBack-up Lamps .........................................5-50
Replacement Bulbs .......................................5-51
Windshield Wiper Blade Replacement ..............5-52
Tires ..............................................................5-53
Tire Sidewall Labelling ...................................5-54
Tire Terminology and Definitions .....................5-57
Inflation - Tire Pressure .................................5-60
Tire Pressure Monitor System .........................5-61
Tire Inspection and Rotation ...........................5-64
When It Is Time for New Tires .......................5-655-1
Section 5
Service and Appearance Care
Buying New Tires .........................................5-66
Different Size Tires and Wheels ......................5-67
Uniform Tire Quality Grading ..........................5-68
Wheel Alignment and Tire Balance ..................5-69
Wheel Replacement ......................................5-69
Tire Chains ..................................................5-71
If a Tire Goes Flat ........................................5-72
Changing a Flat Tire .....................................5-73
Removing the Spare Tire and Tools ................5-75
Removing the Flat Tire and Installing theSpare Tire ................................................5-77
Storing a Flat or Spare Tire and Tools ................5-82
Spare Tire ...................................................5-84
Appearance Care ............................................5-85
Cleaning the Inside of Your Vehicle .................5-85
Fabric/Carpet ...............................................5-87
Leather .......................................................5-87
Instrument Panel, Vinyl, and OtherPlastic Surfaces ........................................5-88
Care of Safety Belts ......................................5-88
Weatherstrips ...............................................5-88Washing Your Vehicle ...................................5-89
Cleaning Exterior Lamps/Lenses .....................5-89
Finish Care ..................................................5-89
Windshield, Backglass, and Wiper Blades .........5-90
Aluminum Wheels .........................................5-91
Tires ...........................................................5-91
Sheet Metal Damage .....................................5-92
Finish Damage .............................................5-92
Underbody Maintenance ................................5-92
Chemical Paint Spotting .................................5-93
Vehicle Care/Appearance Materials ..................5-93
Vehicle Identification ......................................5-94
Vehicle Identification Number (VIN) .................5-94
Service Parts Identification Label .....................5-95
Electrical System ............................................5-95
Add-On Electrical Equipment ..........................5-95
Windshield Wiper Fuses ................................5-95
Power Windows and Other Power Options .......5-96
Fuses and Circuit Breakers ............................5-96
Engine Compartment Fuse Block ....................5-97
Capacities and Specifications ........................5-1025-2
Service Your dealer knows your vehicle best and wants you to be happy with it. We hope you will go to your dealer for all your service needs. You will get genuine GM parts and GM-trained and supported service people. We hope you will want to keep your GM vehicle all GM. Genuine GM parts have one of these marks:
Accessories and Modifications When you add non-GM accessories to your vehicle they can affect your vehicle’s performance and safety, including such things as, braking, stability, ride and handling, emissions systems, aerodynamics, durability, and electronic systems like antilock brakes, traction control and stability control. Some of these accessories may even cause malfunction or damage not covered by warranty. GM Accessories are designed to complement and function with other systems on your vehicle. Your GM dealer can accessorize your vehicle using genuine GM Accessories. When you go to your GM dealer and ask for GM Accessories, you will know that GM-trained and supported service technicians will perform the work using genuine GM Accessories.
5-3
You should keep a record with all parts receipts and list the mileage and the date of any service work you perform. See Maintenance Record on page 6-14.
{CAUTION:
You can be injured and your vehicle could be damaged if you try to do service work on a vehicle without knowing enough about it.
(cid:127) Be sure you have sufficient knowledge,
experience, the proper replacement parts, and tools before you attempt any vehicle maintenance task.
(cid:127) Be sure to use the proper nuts, bolts,
and other fasteners. English and metric fasteners can be easily confused. If you use the wrong fasteners, 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.
Doing Your Own Service Work If you want to do some of your own service work, you will want to use the proper service manual. It tells you much more about how to service your vehicle than this manual can. To order the proper service manual, see Service Publications Ordering Information on page 7-11. Your vehicle has an airbag system. Before attempting to do your own service work, see Servicing Your Airbag-Equipped Vehicle on page 1-64.
5-4
Adding Equipment to the Outside of Your Vehicle Things you might add to the outside of your vehicle can affect the airflow around it. This may cause wind noise and affect windshield washer performance. Check with your dealer before adding equipment to the outside of your vehicle. Fuel Use of the recommended fuel is an important part of the proper maintenance of your vehicle.
Gasoline Octane Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, you may 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, your engine needs service.
Gasoline Specifications At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB-3.5 in Canada. Some gasolines may contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). General Motors recommends against the use of gasolines containing MMT. See Additives on page 5-6 for additional information.
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California Fuel If your 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, your vehicle will operate satisfactorily on fuels meeting federal specifications, but emission control system performance may be affected. The malfunction indicator lamp may turn on and your vehicle may fail a smog-check test. See Malfunction Indicator Lamp on page 3-35. If this occurs, return to your authorized GM dealer for diagnosis. If it is determined that the condition is caused by the type of fuel used, repairs may not be covered by your warranty.
Additives To provide cleaner air, all gasolines in the United States are now required to contain additives that will help prevent engine and fuel system deposits from forming, allowing your emission control system to work properly. In most cases, you should not have to add anything to your 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 your vehicle experiences problems due to dirty injectors or valves, look for gasoline that is advertised as TOP TIER Detergent Gasoline. Also, your GM dealer has additives that will help correct and prevent most deposit-related problems. Gasolines containing oxygenates, such as ethers and ethanol, and reformulated gasolines may be available in your area. General Motors recommends 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.
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Notice: Your vehicle was not designed for fuel that contains methanol. Do not use fuel containing methanol. It can corrode metal parts in your fuel system and also damage the plastic and rubber parts. That damage would not be covered under your warranty. Some gasolines that are not reformulated for low emissions may contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); ask the attendant where you buy gasoline whether the fuel contains MMT. General Motors recommends against the use of such gasolines. Fuels containing MMT can reduce the life of spark plugs and the performance of the emission control system may be affected. The malfunction indicator lamp may turn on. If this occurs, return to your authorized GM dealer for service.
Fuels in Foreign Countries If you plan on driving in another country outside the United States or Canada, the proper fuel may 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 your 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.
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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 your engine when you are refueling. Do not smoke if you are near fuel or refueling your vehicle. Keep sparks, flames, and smoking materials away from fuel. Do not leave the fuel pump unattended when refueling your vehicle — this is against the law in some places. Keep children away from the fuel pump; never let children pump fuel.
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The fuel cap is located on the driver’s side of the vehicle. Some vehicles may be equipped with a fuel door. Open the door to access the fuel cap. Some vehicles may be equipped with a locking fuel cap. Use the fuel cap key to unlock the fuel cap. If you ever need a replacement key, your dealer can help you get one. To remove the fuel cap, turn it slowly counterclockwise. While refueling, let the fuel cap hang by the tether, if it has one.
{CAUTION:
If you spill fuel and then something ignites it, you could be badly burned. Fuel can spray out on you if you open the fuel cap too quickly. This spray can happen if your 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 5-89. 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 3-35.
The FUEL CAP message will be displayed on the Driver Information Center (DIC) if the fuel cap is not properly installed. See DIC Warnings and Messages on page 3-44 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 can get one for you. If you get the wrong type, it may not fit properly. This may cause your malfunction indicator lamp to light and may damage your fuel tank and emissions system. See Malfunction Indicator Lamp on page 3-35.
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Checking Things Under the Hood
{CAUTION:
An electric fan under the hood can start up and injure you even when the engine is not running. Keep hands, clothing and tools away from any underhood electric fan.
Filling a Portable Fuel Container
{CAUTION:
Never fill a portable fuel container while it is in your vehicle. Static electricity discharge from the container can ignite the gasoline vapor. You can be badly burned and your vehicle damaged if this occurs. To help avoid injury to you and others:
(cid:127) Dispense gasoline only into approved
containers.
(cid:127) 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:127) 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:127) Do not smoke while pumping gasoline.
5-10
{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.
Hood Release 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.
2. Release the secondary latch on the hood. It is
located below the front center of the hood.
3. Lift the hood. Before closing the hood, be sure all the filler caps are on properly. Then pull the hood down and close it firmly.
5-11
Engine Compartment Overview When you open the hood on the 3.5 L engine, here is what you will see:
5-12
A. Windshield Washer Fluid. See “Adding Washer
Fluid” under Windshield Washer Fluid on page 5-35.
B. Engine Coolant Recovery Tank. See Engine
Coolant on page 5-24.
C. Engine Air Cleaner/Filter. See Engine Air
Cleaner/Filter on page 5-18.
D. Power Steering Fluid Reservoir. See Power Steering
Fluid on page 5-34.
E. Automatic Transmission Fluid Dipstick (If Equipped).
See “Checking the Fluid Level” under Automatic Transmission Fluid on page 5-19.
F. Engine Oil Fill Cap. See “When to Add Engine Oil”
under Engine Oil on page 5-13.
G. Radiator Pressure Cap. See Cooling System on
page 5-29.
H. Remote Negative (−) Terminal (GND). See Jump
Starting on page 5-40.
I. Engine Oil Dipstick. See “Checking Engine Oil”
under Engine Oil on page 5-13.
J. Remote Positive (+) Terminal. See Jump Starting
on page 5-40.
K. Brake Fluid Reservoir. See “Brake Fluid” under
Brakes on page 5-36.
L. Engine Compartment Fuse Block. See Engine
Compartment Fuse Block on page 5-97.
M. Battery. See Battery on page 5-39. N. Hydraulic Clutch Fluid Reservoir (If Equipped).
See Hydraulic Clutch on page 5-23.
Engine Oil Checking Engine Oil It is a good idea to check your 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.
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When to Add Engine Oil
See Engine Compartment Overview on page 5-12
for the location of the engine oil fill cap.Be sure to 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.
If the oil is below the cross-hatched area (L), you will need to add at least one quart/liter of oil. But you must use the right kind. This section explains what kind of oil to use. For engine oil crankcase capacity, see Capacities and Specifications on page 5-102. Notice: Do not add too much oil. If 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.
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What Kind of Engine Oil to Use
These numbers on an oil container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 20W-50.
Oils meeting these requirements should also have the starburst symbol on the container. This symbol indicates that the oil has been certified by the American Petroleum Institute (API).
Look for two things: (cid:127) GM6094M
Your vehicle’s engine requires oil meeting GM Standard GM6094M. You should look for and use only an oil that meets GM Standard GM6094M.
(cid:127) SAE 5W-30
As shown in the viscosity chart, SAE 5W-30 is best for your vehicle.
You should look for this information on the oil container, and use only those oils that are identified as meeting GM Standard GM6094M and have the starburst symbol on the front of the oil container. 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 your warranty. GM Goodwrench® oil meets all the requirements for your vehicle.
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When the system has calculated that oil life has been diminished, it will indicate that an oil change is necessary. A CHANGE OIL message will come on. See DIC Warnings and Messages on page 3-44. Change your oil as soon as possible within the next 600 miles (1 000 km). It is possible that, if you are driving under the best conditions, the oil life system may not indicate that an oil change is necessary for over a year. However, your engine oil and filter must be changed at least once a year and at this time the system must be reset. Your dealer has GM-trained people who will perform this work using genuine GM parts and reset the system. It is also important to check your oil regularly and keep it at the proper level. If the system is ever reset accidentally, you must change your oil at 3,000 miles (5 000 km) since your last oil change. Remember to reset the oil life system whenever the oil is changed.
If you are in an area of extreme cold, where the temperature falls below −20°F (−29°C), it is recommended that you use either an SAE 5W-30
synthetic oil or an SAE 0W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. Engine Oil Additives Do not add anything to your oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all you will need for good performance and engine protection.Engine Oil Life System When to Change Engine Oil Your vehicle has a computer system that lets you know 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 will be indicated can vary considerably. For the oil life system to work properly, you must reset the system every time the oil is changed.
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How to Reset the Engine Oil Life System The Engine Oil Life System calculates when to change your engine oil and filter based on vehicle use. Anytime your oil is changed, reset the system so it can calculate when the next oil change is required. If a situation occurs where you change your oil prior to a CHANGE OIL message being turned on, reset the system. To reset the Engine Oil Life system, do the following: 1. With the engine off, turn the ignition to ON. 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. If the CHANGE OIL message comes back on when you start your vehicle, the engine oil life system has not reset. Repeat the procedure. See DIC Warnings and Messages on page 3-44.
What to Do with Used Oil Used engine oil contains certain elements that may 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. Instead, recycle it by taking it to a place that collects used oil. If you have a problem properly disposing of your used oil, ask your dealer, a service station or a local recycling center for help.
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Engine Air Cleaner/Filter
The engine air cleaner/filter is located in the engine compartment on the passenger’s side of the vehicle. See Engine Compartment Overview on page 5-12
for more information on location.5-18
When to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter at the Maintenance II intervals and replace it at the first oil change after each 50,000 mile (83 000 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. How to Inspect the Engine Air Cleaner/Filter To inspect or replace the engine air cleaner/filter, do the following: 1. Unfasten the clips that hold the cover on and
remove the cover.
2. Lift out the engine air cleaner/filter. 3. Inspect or replace the air filter. See Normal
Maintenance Replacement Parts on page 6-13
to determine which filter to use.4. Reinstall the engine air cleaner/filter cover. Fasten the clips to hold the cover in place.
{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.
If the air cleaner/filter is off, a backfire
Notice: can cause a damaging engine fire. And, dirt can easily get into your engine, which will damage it. Always have the air cleaner/filter in place when you are driving.
Automatic Transmission Fluid When to Check and Change Automatic Transmission Fluid A good time to check your 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. How to Check Automatic Transmission Fluid Because this operation can be a little difficult, you may choose to have this done at the dealership 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 part 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.
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Wait at least 30 minutes before checking the transmission fluid level if you have been driving: (cid:127) When outside temperatures are above 90°F (32°C). (cid:127) At high speed for quite a while.
In heavy traffic — especially in hot weather.
(cid:127) While pulling a trailer. 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 THIRD (3) 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 you a more accurate reading of the fluid level.
Checking the Fluid Level Prepare your vehicle as follows: 1. Park your vehicle on a level place. Keep the engine
running.
2. With the parking brake applied, place the shift lever
in PARK (P).
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 PARK (P).
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 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’s side of the vehicle.
See Engine Compartment Overview on page 5-12
for more information on location.5-20
(cid:127) 2. Push it back in all the way, wait three seconds and
then pull it back out again.
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, push the
dipstick back in all the way; then flip the handle down to lock the dipstick in place.
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 your vehicle, and the damages may not be covered by your warranty. Always use the automatic transmission fluid listed in Recommended Fluids and Lubricants on page 6-12. (cid:127) After adding fluid, recheck the fluid level as described under “How to Check Automatic Transmission Fluid,” earlier in this section.
(cid:127) 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.
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Manual Transmission Fluid When to Check A good time to have it checked is when the engine oil is changed. However, the fluid in your manual transmission does not require changing. How to Check Because this operation can be a little difficult, you may choose to have this done at your GM dealership service department. If you do it yourself, be sure to follow all the instructions here, or you could get a false reading. Notice: Too much or too little fluid can damage your transmission. Too little fluid could cause the transmission to overheat. Be sure to get an accurate reading if you check your transmission fluid. Check the fluid level only when your engine is off, the vehicle is parked on a level place and the transmission is cool enough for you to rest your fingers on the transmission case.
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Then, follow these steps:
1. Remove the filler plug. 2. Check that the lubricant level is up to the bottom of
the filler 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 6-12. 1. Remove the filler plug. 2. Add fluid at the filler plug hole. Add only enough
fluid to bring the fluid level up to the bottom of the filler plug hole.
3. Install the filler plug. Be sure the plug is fully
seated.
Hydraulic Clutch The hydraulic clutch linkage in your vehicle is self-adjusting. The clutch master cylinder reservoir is filled with hydraulic clutch fluid.
The hydraulic clutch fluid reservoir cap has this symbol on it. See Engine Compartment Overview on page 5-12 for reservoir location.
It is not necessary to regularly check clutch fluid unless you suspect there is a leak in the system. Adding fluid will not correct a leak. A fluid loss in this system could indicate a problem. Have the system inspected and repaired.
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When to Check and What to Use
Refer to the Maintenance Schedule to determine how often you should check the fluid level in your clutch master cylinder reservoir and for the proper fluid. See Recommended Fluids and Lubricants on page 6-12. How to Check and Add Fluid The proper fluid should be added if the level does not reach the bottom of the diaphragm when it is in place in the reservoir. See the instructions on the reservoir cap.
5-24
Engine Coolant The cooling system in your vehicle is filled with DEX-COOL® engine coolant. This coolant is designed to remain in your vehicle for five years or 150,000 miles (240 000 km), whichever occurs first, if you add only DEX-COOL® extended life coolant. The following explains your cooling system and how to add coolant when it is low. If you have a problem with engine overheating, see Engine Overheating on page 5-27. A 50/50 mixture of clean, drinkable water and DEX-COOL® coolant will: (cid:127) Give freezing protection down to −34°F (−37°C). (cid:127) Give boiling protection up to 265°F (129°C). (cid:127) Protect against rust and corrosion. (cid:127) Help keep the proper engine temperature.
Let the warning lights and gages work as they should.
Notice: Using coolant other than DEX-COOL® may cause premature engine, heater core, or radiator corrosion. In addition, the engine coolant may require changing sooner, at the first maintenance service after each 25,000 miles (41 500 km) or 24 months, whichever occurs first. Any repairs would not be covered by your warranty. Always use DEX-COOL® (silicate-free) coolant in your vehicle.
(cid:127) What to Use Use a mixture of one-half clean, drinkable water and one-half DEX-COOL® coolant which will not damage aluminum parts. If you use this coolant mixture, you do not need to add anything else.
If you use the proper coolant, you do not
Notice: have to add extra inhibitors or additives which claim to improve the system. These can be harmful.
Checking Coolant
{CAUTION:
Adding only plain water to your cooling system can be dangerous. Plain water, or some other liquid such as alcohol, can boil before the proper coolant mixture will. Your vehicle’s coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, your engine could get too hot but you would not get the overheat warning. Your engine could catch fire and you or others could be burned. Use a 50/50 mixture of clean, drinkable water and the proper coolant.
If you use an improper coolant mixture,
Notice: your engine could overheat and be badly damaged. The repair cost would not be covered by your warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core and other parts.
The coolant recovery tank cap has this symbol on it. It is located toward the rear of the engine compartment on the passenger’s side of the vehicle. See Engine Compartment Overview on page 5-12 for more information on location.
The vehicle must be on a level surface. When your engine is cold, the coolant level should be at FULL COLD, or a little higher. When your engine is warm, the level could be above the FULL COLD level.
5-25
Adding Coolant If you need more coolant, add the proper DEX-COOL® coolant mixture at the coolant recovery tank.
{CAUTION:
Turning the radiator pressure cap when the engine and radiator are hot can allow steam and scalding liquids to blow out and burn you badly. With the coolant recovery tank, you will almost never have to add coolant at the radiator. Never turn the radiator pressure cap — even a little — when the engine and radiator are hot.
Add coolant mixture at the recovery tank, but be careful not to spill it.
{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.
Occasionally check the coolant level in the radiator. For information on how to add coolant to the radiator, see Cooling System on page 5-29.
5-26
If the pressure cap is not tightly installed,
Radiator Pressure Cap Notice: coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured. See Engine Compartment Overview on page 5-12 for more information on location.
Engine Overheating You will find a coolant temperature gage on your vehicle’s instrument panel. See Engine Coolant Temperature Gage on page 3-34. Your air conditioning may stop working if your engine is too hot. This is normal and helps cool the engine.
If Steam Is Coming From Your Engine
{CAUTION:
Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Just turn it off and get everyone away from the vehicle until it cools down. Wait until there is no sign of steam or coolant before you open the hood. If you keep driving when your engine is overheated, the liquids in it can catch fire. You or others could be badly burned. Stop your engine if it overheats, and get out of the vehicle until the engine is cool.
If your engine catches fire because you
Notice: keep driving with no coolant, your vehicle can be badly damaged. The costly repairs would not be covered by your warranty.
5-27
If you no longer have the overheat warning, you can drive. Just to be safe, drive slower for about 10 minutes. If the warning does not come back on, you can drive normally. If the warning continues, pull over, stop, and park your vehicle right away. If there is still no sign of steam, idle the engine for three minutes while you are parked. Push down the accelerator until the engine speed is about twice as fast as normal idle speed for at least three minutes while you are parked. If you still have the warning, turn off the engine and get everyone out of the vehicle until it cools down. You may decide not to lift the hood but to get service help right away.
If No Steam Is Coming From Your Engine If you get an engine overheat warning but see or hear no steam, the problem may not be too serious. Sometimes the engine can get a little too hot when you: (cid:127) Climb a long hill on a hot day. (cid:127) Stop after high-speed driving. Idle for long periods in traffic. Tow a trailer. See “Driving on Grades” under Towing a Trailer on page 4-59.
If you get the overheat warning with no sign of steam, try this for a minute or so: 1. In heavy traffic, let the engine idle in NEUTRAL while stopped. If it is safe to do so, pull off the road, shift to PARK (P) or NEUTRAL and let the engine idle.
2. Turn off the air conditioning. 3. Turn on your heater to full hot at the highest fan
speed and open the windows as necessary.
5-28
(cid:127) (cid:127) Cooling System When you decide it is safe to lift the hood, here is what you will see:
A. Coolant Recovery Tank B. Engine Cooling Fan C. Radiator Pressure Cap
If the coolant inside the coolant recovery tank is boiling, do not do anything else until it cools down. The vehicle should be parked on a level surface.
When the engine is cold, the coolant level should be at least up to the FULL COLD mark. If it is not, you may have a leak at the pressure cap or in the radiator hoses, heater hoses, radiator, water pump or somewhere else in the cooling system.
5-29
How to Add Coolant to the Coolant Recovery Tank If you have not found a problem yet, but the coolant level is not at the FULL COLD mark, add a 50/50
mixture of clean, drinkable water and DEX-COOL® engine coolant at the coolant recovery tank. See Engine Coolant on page 5-24 for more information.{CAUTION:
Adding only plain water to your cooling system can be dangerous. Plain water, or some other liquid such as alcohol, can boil before the proper coolant mixture will. Your vehicle’s coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, your engine could get too hot but you would not get the overheat warning. Your engine could catch fire and you or others could be burned. Use a 50/50 mixture of clean, drinkable water and DEX-COOL® coolant.
{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.
If there seems to be no leak, start the engine again. The engine cooling fan speed should increase when idle speed is doubled by pushing the accelerator pedal down. If it does not, your vehicle needs service. Turn off the engine. Notice: Engine damage from running your engine without coolant is not covered by your warranty. Notice: Using coolant other than DEX-COOL® may cause premature engine, heater core or radiator corrosion. In addition, the engine coolant may require changing sooner, at 30,000 miles (50 000 km) or 24 months, whichever occurs first. Any repairs would not be covered by your warranty. Always use DEX-COOL® (silicate-free) coolant in your vehicle.
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In cold weather, water can freeze and crack
Notice: the engine, radiator, heater core and other parts. Use the recommended coolant and the proper coolant mixture.
If the overheat warning continues, there is one more thing you can try. You can add the proper mixture directly to the radiator, but be sure the cooling system is cool before you do it.
{CAUTION:
{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.
When the coolant in the coolant recovery tank is at the FULL COLD mark, start your vehicle.
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 radiator pressure cap — even a little — they can come out at high speed. Never turn the cap when the cooling system, including the radiator pressure cap, is hot. Wait for the cooling system and radiator pressure cap to cool if you ever have to turn the pressure cap.
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How to Add Coolant to the Radiator
4. Then fill the coolant recovery tank to the
FULL COLD mark.
5. Reinstall the cap on the coolant recovery tank,
but leave the radiator pressure cap off.
1. You can remove the radiator pressure cap when the cooling system, including the 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 cap to remove it. 3. Fill the radiator with the proper DEX-COOL®
coolant mixture, up to the base of the filler neck. See Engine Coolant on page 5-24 for more information about the proper coolant mixture.
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Engine Fan Noise This vehicle has a clutched engine cooling fan. When the clutch is engaged, the fan spins faster to provide more air to cool the engine. In most everyday driving conditions, the clutch is not engaged. This improves fuel economy and reduces fan noise. Under heavy vehicle loading, trailer towing and/or high outside temperatures, the fan speed increases when the clutch engages. So you may hear an increase in fan noise. This is normal and should not be mistaken as the transmission slipping or making extra shifts. It is merely the cooling system functioning properly. The fan will slow down when additional cooling is not required and the clutch disengages. You may also hear this fan noise when you start the engine. It will go away as the fan clutch disengages.
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6. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the engine cooling fan.
7. By this time, the coolant level inside the radiator filler neck may be lower. If the level is lower, add more of the proper DEX-COOL® coolant mixture through the filler neck until the level reaches the base of the filler neck. Then replace the pressure cap. At any time during this procedure if coolant begins to flow out of the filler neck, reinstall the pressure cap. Be sure to secure it tightly.
Power Steering Fluid
See Engine Compartment Overview on page 5-12
for reservoir location.When to Check Power Steering Fluid It is not necessary to regularly check power steering fluid unless you suspect there is a leak in the system or you hear an unusual noise. A fluid loss in this system could indicate a problem. Have the system inspected and repaired.
How to Check Power Steering Fluid 1. Turn the key off and let the engine compartment
cool down.
2. Wipe the cap and the top of the reservoir clean. 3. Unscrew the cap and wipe the dipstick with a
clean rag.
4. Replace the cap and completely tighten it. 5. Then remove the cap again and look at the fluid
level on the dipstick.
The level should be between the ADD and FULL marks. If necessary, add only enough fluid to bring the level up to the proper range. What to Use To determine what kind of fluid to use, see Recommended Fluids and Lubricants on page 6-12. Always use the proper fluid. Failure to use the proper fluid can cause leaks and damage hoses and seals.
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Windshield Washer Fluid What to Use When you need windshield washer fluid, be sure to read the manufacturer’s instructions before use. If you will be operating your vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing. Adding Washer Fluid
Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 5-12 for reservoir location.
Notice: (cid:127) When using concentrated washer fluid,
follow the manufacturer’s instructions for adding water.
(cid:127) Do not mix water with ready-to-use washer fluid.
Water can cause the solution to freeze and damage your washer fluid tank and other parts of the washer system. Also, water does not clean as well as washer fluid. Fill your washer fluid tank only three-quarters full when it is very cold. This allows for expansion if freezing occurs, which could damage the tank if it is completely full.
(cid:127) Do not use engine coolant (antifreeze) in your windshield washer. It can damage your washer system and paint.
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(cid:127) So, it is not a good idea to top off your brake fluid. Adding brake fluid will not correct a leak. If you add fluid when your linings are worn, then you will have too much fluid when you get new brake linings. You should add or remove brake fluid, as necessary, only when work is done on the brake hydraulic system.
{CAUTION:
If you have too much brake fluid, it can spill on the engine. The fluid will burn if the engine is hot enough. You or others could be burned, and your vehicle could be damaged. Add brake fluid only when work is done on the brake hydraulic system. See “Checking Brake Fluid” in this section.
Refer to the Maintenance Schedule to determine when to check your brake fluid. See Scheduled Maintenance on page 6-4.
Brakes Brake Fluid
Your brake master cylinder reservoir is filled with DOT-3 brake fluid. See Engine Compartment Overview on page 5-12
for the location of the reservoir.There are only two reasons why the brake fluid level in the reservoir might go down. The first is that the brake fluid goes down to an acceptable level during normal brake lining wear. When new linings are put in, the fluid level goes back up. The other reason is that fluid is leaking out of the brake system. If it is, you should have your brake system fixed, since a leak means that sooner or later your brakes will not work well, or will not work at all.
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Checking Brake Fluid You can check the brake fluid without taking off the cap. Look at the brake fluid reservoir. The fluid level should be above MIN. If it is not, have your brake system checked to see if there is a leak. After work is done on the brake hydraulic system, make sure the level is above the MIN but not over the MAX mark. What to Add When you do need brake fluid, use only DOT-3 brake fluid. Use new brake fluid from a sealed container only. See Recommended Fluids and Lubricants on page 6-12. Always clean the brake fluid reservoir cap and the area around the cap before removing it. This will help keep dirt from entering the reservoir.
{CAUTION:
With the wrong kind of fluid in your brake system, your brakes may not work well, or they may not even work at all. This could cause a crash. Always use the proper brake fluid.
Notice: (cid:127) Using the wrong fluid can badly damage brake system parts. For example, just a few drops of mineral-based oil, such as engine oil, in your brake system can damage brake system parts so badly that they will have to be replaced. Do not let someone put in the wrong kind of fluid. If you spill brake fluid on your vehicle’s painted surfaces, the paint finish can be damaged. Be careful not to spill brake fluid on your vehicle. If you do, wash it off immediately. See Appearance Care on page 5-85.
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(cid:127) Brake Wear Your vehicle has four-wheel disc brakes. Disc brake pads have built-in wear indicators that make a high-pitched warning sound when the brake pads are worn and new pads are needed. The sound may come and go or be heard all the time your vehicle is moving, except when you are pushing on the brake pedal firmly.
{CAUTION:
The brake wear warning sound means that soon your brakes will not work well. That could lead to an accident. When you hear the brake wear warning sound, have your vehicle serviced.
Notice: Continuing to drive with worn-out brake pads could result in costly brake repair.
Some driving conditions or climates may cause a brake squeal when the brakes are first applied or lightly applied. This does not mean something is wrong with your brakes. Properly torqued wheel nuts are necessary to help prevent brake pulsation. When tires are rotated, inspect brake pads for wear and evenly tighten wheel nuts in the proper sequence to GM torque specifications. Brake linings should always be replaced as complete axle sets. Brake Pedal Travel See your dealer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign of brake trouble. Brake Adjustment Every time you make a brake stop, your disc brakes adjust for wear.
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Replacing Brake System Parts The braking system on a vehicle is complex. Its many parts have to be of top quality and work well together if the vehicle is to have really good braking. Your vehicle was designed and tested with top-quality GM brake parts. When you replace parts of your braking system — for example, when your brake linings wear down and you need new ones put in — be sure you get new approved GM replacement parts. If you do not, your brakes may no longer work properly. For example, if someone puts in brake linings that are wrong for your vehicle, the balance between your front and rear brakes can change — for the worse. The braking performance you have come to expect can change in many other ways if someone puts in the wrong replacement brake parts.
Battery Your vehicle has a maintenance free battery. When it is time for a new battery, get one that has the replacement number shown on the original battery’s label. We recommend an ACDelco® replacement battery. See Engine Compartment Overview on page 5-12
for battery location. Warning: Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling. Vehicle Storage If you are not going to drive your vehicle for 25 days or more, remove the black, negative (−) cable from the battery. This will help keep your battery from running down.{CAUTION:
Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 5-40 for tips on working around a battery without getting hurt.
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Jump Starting If your vehicle’s battery has run down, you may want to use another vehicle and some jumper cables to start your vehicle. Be sure to use the following steps to do it safely.
{CAUTION:
Batteries can hurt you. They can be dangerous because:
(cid:127) They contain acid that can burn you. (cid:127) They contain gas that can explode or ignite. (cid:127) They contain enough electricity to burn you.
If you do not follow these steps exactly, some or all of these things can hurt you.
Ignoring these steps could result in costly
Notice: damage to your vehicle that would not be covered by your warranty. Trying to start your vehicle by pushing or pulling it will not work, and it could damage your vehicle. 1. Check the other vehicle. It must have a 12-volt
battery with a negative ground system.
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If the other vehicle’s system is not a 12-volt
Notice: system with a negative ground, both vehicles can be damaged. Only use vehicles with 12-volt systems with negative grounds to jump start your vehicle. 2. Get the vehicles close enough so the jumper cables can reach, but be sure the vehicles are not touching each other. If they are, it could cause a ground connection you do not want. You would not be able to start your vehicle, and the bad grounding could damage the electrical systems. To avoid the possibility of the vehicles rolling, set the parking brake firmly on both vehicles involved in the jump start procedure. Put an automatic transmission in PARK (P) or a manual transmission in NEUTRAL before setting the parking brake. If you have a four-wheel-drive vehicle, be sure the transfer case is not in NEUTRAL.
If you leave your radio or other accessories
Notice: on during the jump starting procedure, they could be damaged. The repairs would not be covered by your warranty. Always turn off your radio and other accessories when jump starting your vehicle. 3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette lighter or the accessory power outlets. Turn off the radio and all lamps that are not needed. This will avoid sparks and help save both batteries. And it could save the radio!
4. Open the hoods and locate the positive (+) and
negative (−) terminal locations on the other vehicle. Your vehicle has a remote positive (+) and a remote negative (−) jump starting terminal. See Engine Compartment Overview on page 5-12
for more information on the terminal locations.{CAUTION:
Using a match near a battery can cause battery gas to explode. People have been hurt doing this, and some have been blinded. Use a flashlight if you need more light.
