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to your sense of motion. After driving for any distance at higher speeds, you may tend to think you are going slower than you actually are.


Before Leaving on a Long Trip Make sure you are ready. Try to be well rested. If you must start when you are not fresh — such as after a day’s work — do not plan to make too many miles that first part of the journey. Wear comfortable clothing and shoes you can easily drive in. Is your vehicle ready for a long trip? If you keep it serviced and maintained, it is ready to go. If it needs service, have it done before starting out. Of course, you will find experienced and able service experts in GM dealerships all across North America. They will be ready and willing to help if you need it. Here are some things you can check before a trip: (cid:127) Windshield Washer Fluid: Is the reservoir


full? Are all windows clean inside and outside?


(cid:127) Wiper Blades: Are they in good shape? (cid:127) Fuel, Engine Oil, Other Fluids: Have you


checked all levels?


(cid:127) Lamps: Are they all working? Are the lenses


clean?


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(cid:127) Tires: They are vitally important to a safe, trouble-free trip. Is the tread good enough for long-distance driving? Are the tires all inflated to the recommended pressure?


(cid:127) Weather Forecasts: What is the weather


outlook along your route? Should you delay your trip a short time to avoid a major storm system?


(cid:127) Maps: Do you have up-to-date maps?


Highway Hypnosis Is there actually such a condition as highway hypnosis? Or is it just plain falling asleep at the wheel? Call it highway hypnosis, lack of awareness, or whatever. There is something about an easy stretch of road with the same scenery, along with the hum of the tires on the road, the drone of the engine, and the rush of the wind against the vehicle that can make


you sleepy. Do not let it happen to you! If it does, your vehicle can leave the road in less than a second, and you could crash and be injured. What can you do about highway hypnosis? First, be aware that it can happen. Then here are some tips: (cid:127) Make sure your vehicle is well ventilated, with


a comfortably cool interior.


(cid:127) Keep your eyes moving. Scan the road ahead and to the sides. Check your rearview mirrors and your instruments frequently. If you get sleepy, pull off the road into a rest, service, or parking area and take a nap, get some exercise, or both. For safety, treat drowsiness on the highway as an emergency.


(cid:127)


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Hill and Mountain Roads


Driving on steep hills or mountains is different from driving in flat or rolling terrain.


If you drive regularly in steep country, or if you are planning to visit there, here are some tips that can make your trips safer and more enjoyable. (cid:127) Keep your vehicle in good shape. Check all fluid levels and also the brakes, tires, cooling system, and transmission. These parts can work hard on mountain roads.


{CAUTION:


If you do not shift down, your brakes could get so hot that they would not work well. You would then have poor braking or even none going down a hill. You could crash. Shift down to let your engine assist your brakes on a steep downhill slope.


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(cid:127) Stay in your own lane when driving on two-lane roads in hills or mountains. Do not swing wide or cut across the center of the road. Drive at speeds that let you stay in your own lane.


(cid:127) As you go over the top of a hill, be alert. There could be something in your lane, like a stalled car or an accident.


(cid:127) You may see highway signs on mountains that


warn of special problems. Examples are long grades, passing or no-passing zones, a falling rocks area, or winding roads. Be alert to these and take appropriate action.


{CAUTION:


Coasting downhill in NEUTRAL (N) or with the ignition off is dangerous. Your brakes will have to do all the work of slowing down. They could get so hot that they would not work well. You would then have poor braking or even none going down a hill. You could crash. Always have your engine running and your vehicle in gear when you go downhill.


(cid:127) Know how to go down hills. The most important thing to know is this: let your engine do some of the slowing down. Shift to a lower gear when you go down a steep or long hill.


(cid:127) Know how to go uphill. You may want to shift


down to a lower gear. The lower gears help cool your engine and transmission, and you can climb the hill better.


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Winter Driving


Here are some tips for winter driving: (cid:127) Have your vehicle in good shape for winter. (cid:127) You may want to put winter emergency


supplies in your vehicle. Also see Tires on page 413.


Include an ice scraper, a small brush or broom, a supply of windshield washer fluid, a rag, some winter outer clothing, a small shovel, a flashlight, a red cloth, and a couple of reflective warning triangles. And, if you will be driving under severe conditions, include a small bag of sand, a piece of old carpet, or a couple of burlap bags to help provide traction. Be sure you properly secure these items in your vehicle.


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Driving On Snow or Ice Most of the time, those places where the tires meet the road probably have good traction. However, if there is snow or ice between the tires and the road, you can have a very slippery situation. You will have a lot less traction, or grip, and will need to be very careful.


What is the worst time for this? Wet ice. Very cold snow or ice can be slick and hard to drive on. But wet ice can be even more trouble because it may offer the least traction of all. You can get wet ice when it is about freezing, 32°F (0°C), and freezing rain begins to fall. Try to avoid driving on wet ice until salt and sand crews can get there. Whatever the condition — smooth ice, packed, blowing, or loose snow — drive with caution. Traction control improves your ability to accelerate when driving on a slippery road. Even though your vehicle has the Traction Control System (TCS), you will want to slow down and adjust your driving to the road conditions. Under certain conditions, you may want to turn the TCS off, such as when driving through deep snow and loose gravel, to help maintain vehicle motion at lower speeds. See Traction Control System (TCS) on page 329. The StabiliTrak® System may also activate. See StabiliTrak® System on page 331.


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The Anti-Lock Brake System (ABS) improves your vehicle’s stability when you make a hard stop on a slippery road. Even though you have ABS, you will want to begin stopping sooner than you would on dry pavement. See Anti-Lock Brake System (ABS) on page 327. (cid:127) Allow greater following distance on any


slippery road.


(cid:127) Watch for slippery spots. The road might be fine until you hit a spot that is covered with ice. On an otherwise clear road, ice patches may appear in shaded areas where the sun cannot reach, such as around clumps of trees, behind buildings, or under bridges. Sometimes the surface of a curve or an overpass may remain icy when the surrounding roads are clear. If you see a patch of ice ahead of you, brake before you are on it. Try not to brake while you are actually on the ice, and avoid sudden steering maneuvers.


If You Are Caught in a Blizzard If you are stopped by heavy snow, you could be in a serious situation. You should probably stay with your vehicle unless you know for sure that you are near help and you can hike through the snow. Here are some things to do to summon help and keep yourself and your passengers safe: (cid:127) Turn on your hazard flashers. (cid:127) Tie a red cloth to your vehicle to alert police


that you have been stopped by the snow.


(cid:127) Put on extra clothing or wrap a blanket


around you. If you do not have blankets or extra clothing, make body insulators from newspapers, burlap bags, rags, floor mats — anything you can wrap around yourself or tuck under your clothing to keep warm.


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{CAUTION:


Snow can trap exhaust gases under your vehicle. This can cause deadly CO (carbon monoxide) gas to get inside. CO could overcome you and kill you. You cannot see it or smell it, so you might not know it is in your vehicle. Clear away snow from around the base of your vehicle, especially any that is blocking your exhaust pipe. And check around again from time to time to be sure snow does not collect there. Open a window just a little on the side of the vehicle that is away from the wind. This will help keep CO out.


Run your engine only as long as you must. This saves fuel. When you run the engine, make it go a little faster than just idle. That is, push the accelerator slightly. This uses less fuel for the heat that you get and it keeps the battery charged.


You can run the engine to keep warm, but be careful.


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You will need a well-charged battery to restart the vehicle, and possibly for signaling later on with your headlamps. Let the heater run for a while. Then, shut the engine off and close the window almost all the way to preserve the heat. Start the engine again and repeat this only when you feel really uncomfortable from the cold. But do it as little as possible. Preserve the fuel as long as you can. To help keep warm, you can get out of the vehicle and do some fairly vigorous exercises every half hour or so until help comes.


If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow In order to free your vehicle when it is stuck, you will need to spin the wheels, but you do not want to spin your wheels too fast. The method known as rocking can help you get out when you are stuck, but you must use caution.


{CAUTION:


If you let your vehicle’s tires spin at high speed, they can explode, and you or others could be injured. And, the transmission or other parts of the vehicle can overheat. That could cause an engine compartment fire or other damage. When you are stuck, spin the wheels as little as possible. Do not spin the wheels above 35 mph (55 km/h) as shown on the speedometer.


Notice: Spinning the wheels can destroy parts of your vehicle as well as the tires. If you spin the wheels too fast while shifting the transmission back and forth, you can destroy the transmission. For information about using tire chains on your vehicle, see Tire Chains on page 435.


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Rocking Your Vehicle to Get It Out First, turn the steering wheel left and right. That will clear the area around the front wheels. You should turn the traction control system off. See Traction Control System (TCS) on page 329. Then shift back and forth between REVERSE (R) and a forward gear, spinning the wheels as little as possible. Release the accelerator pedal while you shift, and press lightly on the accelerator pedal when the transmission is in gear. By slowly spinning the wheels in the forward and reverse directions, you will cause a rocking motion that may free your vehicle. If that does not get your vehicle out after a few tries, it may need to be towed out. If your vehicle does need to be towed out, see Towing Your Vehicle on page 359.


Loading Your 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 may properly carry, the Tire and Loading Information label and the Certification label.


{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.


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Tire and Loading Information Label


Label Example


A vehicle specific Tire and Loading Information label is attached to the center pillar (B-pillar) of your vehicle. With the driver’s door open, you will find the label attached below the door latch. This 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 413 and Inflation - Tire Pressure on page 422. There is also important loading information on the vehicle Certification 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 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 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.


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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. Your vehicle is neither designed nor intended to tow a trailer.


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Example 1


Item


Description


Total


Vehicle Capacity Weight for Example 1 = Subtract Occupant Weight @ 150 lbs (68 kg) x 1 = Available Occupant and Cargo Weight =


400 lbs (181 kg)


150 lbs (68 kg)


250 lbs (113 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 2 = Available Cargo Weight =


400 lbs (181 kg)


300 lbs (136 kg)


100 lbs (45 kg)


Vehicle Capacity Weight for Example 3 = Subtract Occupant Weight @ 200 lbs (91 kg) x 2 = Available Cargo Weight =


400 lbs (181 kg)


400 lbs (181 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.


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Certification Label


A vehicle specific Certification label is attached to the rear edge of the driver’s door. It tells you the gross weight capacity of your vehicle, called the Gross Vehicle Weight Rating (GVWR). The GVWR includes the weight of the vehicle, all occupants, fuel, and cargo. Never exceed the GVWR for your vehicle, or the Gross Axle Weight Rating (GAWR) for either the front or rear axle. And, if you do have a heavy load, you should spread it out.


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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.


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 rear 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.


Towing Towing Your Vehicle Consult your dealer or a professional towing service if you need to have your disabled vehicle towed. See Roadside Service on page 487. 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”. Your vehicle was not designed to be towed with any of its wheels on the ground. If your vehicle must be towed, see “Towing Your Vehicle” earlier in this section.


Towing a Trailer Your XLR is neither designed nor intended to tow a trailer.


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✍ NOTES


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Section 6


Service and Appearance Care


Service ........................................................ 363
Accessories and Modifications ................... 363
California Proposition 65 Warning .............. 364
Doing Your Own Service Work .................. 364
Adding Equipment to the Outside of Your


Vehicle ................................................... 365
Fuel ............................................................. 365
Gasoline Octane ........................................ 366
Gasoline Specifications .............................. 366
California Fuel ........................................... 367
Additives ................................................... 367
Fuels in Foreign Countries ........................ 368
Filling the Tank ......................................... 369
Filling a Portable Fuel Container ............... 371
Checking Things Under the Hood .............. 372
Hood Release ........................................... 373
Engine Compartment Overview .................. 374
Engine Oil ................................................. 377
Engine Oil Life System .............................. 380
Supercharger Oil ....................................... 382
Engine Air Cleaner/Filter ............................ 382
Automatic Transmission Fluid .................... 384
Engine Coolant .......................................... 385
Coolant Surge Tank Pressure Cap .............. 388


Engine Overheating ................................... 388
Overheated Engine Protection


Operating Mode ..................................... 390
Cooling System ......................................... 391
Power Steering Fluid ................................. 396
Windshield Washer Fluid ........................... 397
Brakes ...................................................... 399
Battery ...................................................... 402
Jump Starting ............................................ 403
Rear Axle .................................................... 407
Headlamp Aiming ........................................ 408
Headlamp Vertical Aiming .......................... 410
Bulb Replacement ....................................... 412
Windshield Replacement ............................ 412
Windshield Wiper Blade Replacement ....... 412
Tires ............................................................ 413
Winter Tires (XLR-V) ................................. 414
Tire Sidewall Labeling ............................... 415
Tire Terminology and Definitions ............... 417
Run-Flat Tires ........................................... 420
Inflation - Tire Pressure ............................. 422
Tire Pressure Monitor System ................... 423
Tire Inspection and Rotation ...................... 426
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Section 6


Service and Appearance Care


When It Is Time for New Tires .................. 428
Buying New Tires ...................................... 428
Different Size Tires and Wheels ................ 430
Uniform Tire Quality Grading ..................... 431
Wheel Alignment and Tire Balance ............ 432
Wheel Replacement .................................. 432
Tire Chains ............................................... 435
Lifting Your Vehicle ................................... 435
If a Tire Goes Flat .................................... 440
Appearance Care ........................................ 441
Cleaning the Inside of Your Vehicle .......... 441
Fabric/Carpet ............................................. 443
Leather ...................................................... 444
Instrument Panel, Vinyl, and Other


Plastic Surfaces ..................................... 444
Wood Panels ............................................. 445
Speaker Covers ........................................ 445
Care of Safety Belts .................................. 445
Weatherstrips ............................................ 445
Washing Your Vehicle ............................... 446
Cleaning Exterior Lamps/Lenses ................ 446
Finish Care ............................................... 447


Windshield and Wiper Blades .................... 447
Aluminum or Chrome-Plated Wheels ......... 448
Tires ......................................................... 449
Sheet Metal Damage ................................. 449
Finish Damage .......................................... 449
Underbody Maintenance ............................ 449
Chemical Paint Spotting ............................ 450
Vehicle Care/Appearance Materials ............ 450
Vehicle Identification .................................. 451
Vehicle Identification Number (VIN) ........... 451
Service Parts Identification Label ............... 451
Electrical System ........................................ 452
Add-On Electrical Equipment ..................... 452
Windshield Wiper Fuses ............................ 452
Power Windows and Other Power


Options .................................................. 452
Fuses and Circuit Breakers ....................... 453
Instrument Panel Fuse Block ..................... 453
Underhood Fuse Block .............................. 455
Capacities and Specifications .................... 458


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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, airbags, braking, stability, ride and handling, emissions systems, aerodynamics, durability, and electronic systems like anti-lock 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.


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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


{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.


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 497.


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Your vehicle has an airbag system. Before attempting to do your own service work, see Servicing Your Airbag-Equipped Vehicle on page 58. 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 477.


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. To help keep your engine clean and maintain optimum vehicle performance, GM recommends the use of gasoline advertised as TOP TIER Detergent Gasoline. The 8th digit of your Vehicle Identification Number (VIN) shows the code letter or number that identifies your engine. You will find the VIN at the top left of the instrument panel. See Vehicle Identification Number (VIN) on page 451.


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Gasoline Octane If your vehicle has the 4.6L V8 engine (VIN Code A), use premium unleaded gasoline with a posted octane rating of 91 or higher. You may also use regular unleaded gasoline rated at 87
octane or higher, but your vehicle’s acceleration may be slightly reduced, and you may notice a slight audible knocking noise, commonly referred to as spark knock. If the octane is less than 87, you may 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 might damage your engine. If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, your engine needs service. If your vehicle has the 4.4L V8 engine (VIN Code D), use premium unleaded gasoline with a posted octane rating of 91 or higher. For best performance, use premium unleaded gasoline with a posted octane rating of 93. In an emergency,


you can use regular unleaded gasoline with an octane rating of 87 or higher. If 87 octane fuel is used, do not perform any aggressive driving maneuvers such as wide open throttle applications. You may also hear audible spark knock during acceleration. Refill your tank with premium fuel as soon as possible to avoid damaging your engine. If you are using gasoline rated at 91
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 367 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 196. 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 dealer has additives that will help correct and prevent most deposit-related problems.


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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. 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 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.


368


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.


The tethered fuel cap is located behind a hinged fuel door on the driver’s side of the vehicle.


The fuel door release button is located on the left side of the instrument panel. The button only works when the vehicle is in PARK (P) or NEUTRAL (N) and the valet lockout button is in OFF.


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An alternate fuel door release is located inside the trunk behind a panel on the driver’s side of the vehicle. Pull the handle to release the fuel door.


To remove the fuel cap, turn it slowly counterclockwise. The fuel cap has a spring in it; if the cap is released too soon, it will spring back to the right. While refueling, hang the tethered fuel cap from the hook on the fuel door.


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{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 446. 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 196.


The CHECK GAS CAP message in the Driver Information Center (DIC) will be displayed if the fuel cap is not properly installed.


{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


Notice: get 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 196.


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.


371


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.


{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.


372


Hood Release To lift the hood, use the following steps:


1. Pull the lever with this symbol on it. It is located on the lower left side of the instrument panel.


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


the secondary hood release lever. The lever is located under the hood near the center of the vehicle. Move the release lever to the right and raise the hood.


Before closing the hood, be sure all filler caps are on properly. Then pull the hood down and close it firmly.


373


Engine Compartment Overview When you open the hood on the 4.6L V8 engine, here is what you will see:


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A. Battery. See Battery on page 402. B. Passenger Compartment Air Filter. See


Passenger Compartment Air Filter on page 184.


C. Underhood Fuse Block. See Underhood


Fuse Block on page 455.


D. Power Steering Fluid. See Power Steering


Fluid on page 396.


E. Engine Air Cleaner/Filter. See Engine Air


Cleaner/Filter on page 382.


F. Engine Oil Fill Cap. See “When to Add Engine


Oil” under Engine Oil on page 377.


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


under Engine Oil on page 377.


H. Brake Master Cylinder Reservoir. See “Brake


Fluid” under Brakes on page 399.


I. Engine Coolant Surge Tank and Pressure Cap.


See Coolant Surge Tank Pressure Cap on page 388.


J. Windshield Washer Fluid Reservoir. See “Adding Washer Fluid” under Windshield Washer Fluid on page 397.


375


When you open the hood on the 4.4L V8 XLR-V engine, here is what you will see:


376


A. Battery. See Battery on page 402. B. Passenger Compartment Air Filter. See


Passenger Compartment Air Filter on page 184.


C. Underhood Fuse Block. See Underhood


Fuse Block on page 455.


D. Power Steering Fluid. See Power Steering


Fluid on page 396.


E. Engine Air Cleaner/Filter. See Engine Air


Cleaner/Filter on page 382.


F. Engine Oil Fill Cap. See “When to Add Engine


Oil” under Engine Oil on page 377.


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


under Engine Oil on page 377.


H. Brake Master Cylinder Reservoir. See “Brake


Fluid” under Brakes on page 399.


I. Engine Coolant Surge Tank and Pressure Cap.


See Coolant Surge Tank Pressure Cap on page 388.


J. Windshield Washer Fluid Reservoir. See “Adding Washer Fluid” under Windshield Washer Fluid on page 397.


Engine Oil If the LOW OIL LEVEL or LOW OIL PRESSURE message on the Driver Information Center (DIC) appears, it means you need to check the engine oil level right away. For more information, see LOW OIL LEVEL and LOW OIL PRESSURE under DIC Warnings and Messages on page 206. You should check the engine oil level regularly; this is an added reminder. 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 374
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.


377


When to Add Engine Oil


See Engine Compartment Overview on page 374 for the location of the engine oil fill cap.


If the oil is below the cross-hatched area at the tip of the dipstick, 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 458. 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.


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.


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What Kind of Engine Oil to Use


Look for two things: (cid:127) GM4718M


Your 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. You should look for and use only an oil that meets GM Standard GM4718M.


If you use oils that do not have the


Notice: GM4718M Standard designation, you can cause engine damage not covered by your warranty. (cid:127) SAE 5W-30


As shown in the viscosity chart, SAE 5W-30 is best for your vehicle. 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).


You should look for this on the oil container, and use only those oils that are identified as meeting GM Standard GM4718M and have the starburst symbol on the front of the oil container.


379


Your vehicle’s engine is filled at the factory with a Mobil 1® synthetic oil, which meets all requirements for your vehicle. Substitute Engine Oil: When adding oil to maintain engine oil level, oil meeting GM Standard GM4718M may 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. Engine Oil Additives Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM4718M 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. Notice: engine uses a special oil filter. The use of any other engine oil filter could lead to filter failure and result in severe engine damage. Damage caused by use of the wrong engine oil filter would not be covered by your new vehicle warranty.


If your vehicle is an XLR-V model, the


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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 NOW message in the DIC will come on. See DIC Warnings and Messages on page 206. 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 service 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.


How to Reset the Engine Oil Life System and the Oil Life Indicator 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 NOW message in the DIC being turned on, reset the system. After the oil has been changed, the CHANGE OIL NOW message and the oil life indicator must be reset. To reset the message use the following procedure: 1. Press the up or down arrow to scroll the DIC


to show OIL LIFE.


2. Once the XXX% ENGINE OIL LIFE menu item


is highlighted, press and hold the RESET button until the percentage shows 100%. If the percentage does not return to 100% or if the CHANGE OIL NOW message comes back on when you start your vehicle, the engine oil life system has not reset. Repeat the procedure.


381


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.


Supercharger Oil Because they are technically qualified and have the proper tools, you should have your dealer perform this maintenance.


382


When to Check See Additional Required Services on page 467 for when the oil level should be checked. What Kind of Oil to Use Use only the recommended supercharger oil. See Recommended Fluids and Lubricants on page 473.


Engine Air Cleaner/Filter See Engine Compartment Overview on page 374
for the location of the engine air cleaner/filters. When to Inspect the Engine Air Cleaner/Filters Inspect the air cleaner/filters at the Maintenance II intervals and replace them at the first oil change after each 50,000 mile (83 000 km) interval. See Scheduled Maintenance on page 465 for more information. If you are driving in dusty/dirty conditions, inspect the filters at each engine oil change.


How to Inspect the Engine Air Cleaner/Filters To inspect the air cleaner/filters, remove the filters from the vehicle and lightly shake the filters to release loose dust and dirt. If the filters remain caked with dirt, new filters are required. To inspect or replace the filters, do the following: 1. Some XLR-V vehicles, have a single piece black cover that snaps over the entire air cleaner assembly. For vehicles with this cover, simply pull it’s left/right sides toward the outside of the vehicle and lift up to remove cover. Reinstall the cover when you are finished inspecting/replacing the filters.


2. Move the clasps on the top of the engine air


cleaner/filter cover forward to unlatch the cover.


3. Lift the front of the cover at an angle and remove. This is necessary due to the four tabs located on the rear of the cover.


4. Remove the engine air cleaner/filter element and any loose debris that might be found in the air cleaner base.


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5. Inspect or replace the filter. 6. Repeat the procedure for the second air


cleaner/filter.


Reverse the above procedure to reinstall the engine air cleaner filter housings.


{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.


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Automatic Transmission Fluid How to Check Automatic Transmission Fluid It is not necessary to check the transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to the dealership service department and have it repaired as soon as possible. There is a special procedure for checking and changing the transmission fluid. Because this procedure is difficult, you should have this done at the dealership service department. Contact your dealer for additional information or the procedure can be found in the service manual. To purchase a service manual, see Service Publications Ordering Information on page 497. 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 473.


Change the fluid and filter at the intervals listed in Additional Required Services on page 467, and be sure to use the fluid listed in Recommended Fluids and Lubricants on page 473.


A 50/50 mixture of clean, drinkable water and DEX-COOL® coolant will: (cid:127) Giving freezing protection down to −34°F


(−37°C).


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 388.


(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. (cid:127) 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 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.


385


If you use an improper coolant


Notice: mixture, 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. If you have to add coolant more than four times a year, have your dealer check your cooling system. Notice: additives in your vehicle’s cooling system, you could damage your vehicle. Use only the proper mixture of the engine coolant listed in this manual for the cooling system. See Recommended Fluids and Lubricants on page 473 for more information.


If you use extra inhibitors and/or


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.


{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.


386


Checking Coolant


The engine coolant surge tank is located toward the rear of the engine compartment on the driver’s side of the vehicle. For more information on location, see Engine Compartment Overview on page 374.


{CAUTION:


Turning the surge tank pressure cap when the engine and radiator are hot can allow steam and scalding liquids to blow out and burn you badly. Never turn the surge tank pressure cap — even a little — when the engine and radiator are hot.


The vehicle must be on a level surface. When your engine is cold, the coolant level should be at the FULL COLD mark, located on the side of the surge tank that faces the front. If the LOW COOLANT message on the Driver Information Center (DIC) comes on and stays on, it means you are low on engine coolant. See DIC Warnings and Messages on page 206
for more information.


387


Adding Coolant If you need more coolant, add the proper DEX-COOL® coolant mixture at the surge tank, but only when the engine is cool.


{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 replacing the pressure cap, press down and turn it clockwise until you hear a clicking sound. Make sure the cap is hand-tight and fully seated.


If the pressure cap is not tightly


Coolant Surge Tank Pressure Cap Notice: installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured. The coolant surge tank pressure cap must be fully installed on the coolant surge tank. See Engine Compartment Overview on page 374 for more information on location.


Engine Overheating You will find a COOLANT OVER TEMP message or an ENGINE HOT, STOP ENGINE message displayed in the Driver Information Center (DIC). See DIC Warnings and Messages on page 206. You will also hear a chime. There is also an engine coolant temperature gage on the instrument panel cluster. See Engine Coolant Temperature Gage on page 195.


388


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. 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 the vehicles 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. See Overheated Engine Protection Operating Mode on page 390 for information on driving to a safe place in an emergency.


If your engine catches fire because


Notice: you keep driving with no coolant, your vehicle can be badly damaged. The costly repairs would not be covered by your warranty. See Overheated Engine Protection Operating Mode on page 390 for information on driving to a safe place in an emergency. If No Steam Is Coming From Your Engine An overheat warning, along with a low coolant message, can indicate a serious problem. If you get an engine overheat warning with no low coolant message, 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. (cid:127) Idle for long periods in traffic. (cid:127) Tow a trailer.


389


Overheated Engine Protection Operating Mode This operating mode allows your vehicle to be driven to a safe place in an emergency situation. If an overheated engine condition exists and the DIC message ENGINE HOT, STOP ENGINE is displayed, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage. In this mode, you will notice a significant loss in power and engine performance. Driving extended miles (km) in the overheat protection mode should be avoided. Notice: After driving in the overheated engine protection operating mode, to avoid engine damage, allow the engine to cool before attempting any repair. The engine oil will be severely degraded. Repair the cause of coolant loss, change the oil and reset the oil life system. See Engine Oil on page 377.


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 (N) while stopped. If it is safe to do so, pull off the road, shift to PARK (P) or NEUTRAL (N) and let the engine idle.


2. Set the climate controls to the highest heat


setting and fan speed and open the windows as necessary.


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. If you still have the warning, turn off the engine and get everyone out of the vehicle until it cools down. Also, see “Overheated Engine Protection Operating Mode” later in this section. You may decide not to lift the hood but to get service help right away.


390


Cooling System When you decide it is safe to lift the hood, here is what you will see:


{CAUTION:


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


If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down. The vehicle should be parked on a level surface.


A. Electric Engine Cooling Fan B. Coolant Surge Tank with Pressure Cap


391


Notice: Engine damage from running your engine without coolant is not covered by your warranty. See Overheated Engine Protection Operating Mode on page 390 for information on driving to a safe place in an emergency. Notice: Using coolant other than DEX-COOL® may 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 your warranty. Always use DEX-COOL® (silicate-free) coolant in your vehicle.


A low coolant level should be indicated by a LOW COOLANT message on the Driver Information Center (DIC). If it is, 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.


{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, with the engine on, check to see if the electric engine cooling fan is running. If the engine is overheating, the fan should be running. If it is not, your vehicle needs service.


392


How to Add Coolant to the Coolant Surge Tank If you have not found a problem yet, check to see if coolant is visible in the surge tank. If coolant is visible but the coolant level is not at the FULL COLD mark on the front of the coolant surge tank, add a 50/50 mixture of clean, drinkable water and DEX-COOL® coolant at the coolant surge tank, but be sure the cooling system, including the coolant surge tank pressure cap, is cool before you do it. See Engine Coolant on page 385
for more information. If no coolant is visible in the surge tank, add coolant as follows:


{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 coolant surge tank pressure cap — even a little — they can come out at high speed. Never turn the cap when the cooling system, including the coolant surge tank pressure cap, is hot. Wait for the cooling system and coolant surge tank pressure cap to cool if you ever have to turn the pressure cap.


393


{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.


In cold weather, water can freeze and


Notice: crack the engine, radiator, heater core and other parts. Use the recommended coolant and the proper coolant mixture.


{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.


394


1. You can remove the coolant surge tank pressure cap when the cooling system, including the coolant surge tank pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly counterclockwise. 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 and remove it.


3. Fill the coolant surge tank with the proper


mixture until the level inside the surge tank stabilizes at the FULL COLD mark on the front of the surge tank.


395


If the LOW COOLANT message does not appear on the Driver Information Center (DIC) after two minutes, the coolant is at the proper fill level. If a LOW COOLANT message does appear, repeat Steps 1 through 3 then reinstall the pressure cap, or see your dealer.


Power Steering Fluid


See Engine Compartment Overview on page 374 for reservoir location.


4. With the coolant surge tank pressure cap off,


start the engine and let it run until you can feel the upper radiator hose getting hot. Watch out for the engine cooling fan. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower, add more of the proper mixture to the coolant surge tank until the level stabilizes at the FULL COLD mark on the coolant surge tank.


5. Then replace the pressure cap. Be sure the


cap is hand-tight and fully seated.


396


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 To check the power steering fluid, do the following: 1. Turn the ignition 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. Remove the cap again and look at the


fluid level on the dipstick.


The level should be at the FULL COLD mark. If necessary, add only enough fluid to bring the level up to the mark.


What to Use To determine what kind of fluid to use, see Recommended Fluids and Lubricants on page 473. Always use the proper fluid. Failure to use the proper fluid can cause leaks and damage hoses and seals.


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.


397


Adding Washer Fluid The LOW WASHER FLUID message will be displayed on the Driver Information Center (DIC) when the fluid is low.


Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 374
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.


(cid:127) 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.


398


Brakes Brake Fluid


Your brake master cylinder reservoir is filled with DOT-3 brake fluid. See Engine Compartment Overview on page 374 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.


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 465.


399


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 the MIN mark on the reservoir. 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 between the MIN and MAX marks. What to Add When you do need brake fluid, use only DOT-3
brake fluid. Refer to Recommended Fluids and Lubricants on page 473. Use new brake fluid from a sealed container only. 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.


400


{CAUTION:


With the wrong kind of fluid in the brake system, the 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 the 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 Washing Your Vehicle on page 446.


(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 the 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. 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 As you make brake stops, your disc brakes automatically adjust for wear. 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.


401


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. For battery replacement, see your dealer or the service manual. To purchase a service manual, see Service and Owner Publications in Service Publications Ordering Information on page 497. 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 403 for tips on working around a battery without getting hurt.


You must close all doors and the trunk before reconnecting the battery. After reconnecting the battery, you must press the unlock button on the keyless access transmitter. Failure to follow this procedure may result in the alarm sounding. Pressing unlock on the keyless access transmitter would stop the alarm.


402


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


(cid:127) They contain enough electricity to


ignite.


burn you.


If you do not follow these steps exactly, some or all of these things can hurt you.


If you try to start your vehicle by


Notice: pushing or pulling it, you could damage your vehicle. Do not push or pull your vehicle


to start it; instead, use the jump starting procedure in this manual to start your vehicle when the battery has run down. 1. Check the other vehicle. It must have a


12-volt battery with a negative ground system.


If the other vehicle’s system is not a


Notice: 12-volt 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.


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Notice: If you leave your radio or other accessories 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 outlet. 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 batteries. Find


the positive (+) and negative (−) terminal locations on each vehicle. See Engine Compartment Overview on page 374 for more information on location.


{CAUTION:


An electric fan can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan.


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{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. Be sure the battery has enough water. You do not need to add water to the battery installed in your new vehicle. But if a battery has filler caps, be sure the right amount of fluid is there. If it is low, add water to take care of that first. If you do not, explosive gas could be present. Battery fluid contains acid that can burn you. Do not get it on you. If you accidentally get it in your eyes or on your skin, flush the place with water and get medical help immediately.


{CAUTION:


Fans or other moving engine parts can injure you badly. Keep your hands away from moving parts once the engine is running.


5. Check that the jumper cables do not have loose or missing insulation. If they do, you could get a shock. The vehicles could be damaged too. Before you connect the cables, here are some basic things you should know. Positive (+) will go to positive (+) or to a remote positive (+) terminal if the vehicle has one. Negative (−) will go to a heavy, unpainted metal engine part or to a remote negative (−) terminal if the vehicle has one. Do not connect positive (+) to negative (−) or you will get a short that would damage the battery and maybe other parts too. And do not connect the negative (−) cable to the negative (−) terminal on the dead battery because this can cause sparks.


6. Connect the red positive (+) cable to the positive (+) terminal of the dead battery. Use a remote positive (+) terminal if the vehicle has one.


7. Do not let the other end touch metal. Connect


it to the positive (+) terminal of the good battery. Use a remote positive (+) terminal if the vehicle has one.


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8. Now connect the black negative (−) cable to the negative (−) terminal of the good battery. Use a remote negative (−) terminal if the vehicle has one. Do not let the other end touch anything until the next step. The other end of the negative (−) cable does not go to the dead battery. It goes to a heavy, unpainted metal engine part or to a remote negative (−) terminal on the vehicle with the dead battery.


9. Connect the other end of the negative (−) cable at least 18 inches (45 cm) away from the dead battery, but not near engine parts that move. The electrical connection is just as good there, and the chance of sparks getting back to the battery is much less.


10. Now start the vehicle with the good battery


and run the engine for a while.


11. Try to start the vehicle that had the dead


battery. If it will not start after a few tries, it probably needs service.


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If the jumper cables are connected or


Notice: removed in the wrong order, electrical shorting may occur and damage the vehicle. The repairs would not be covered by your warranty. Always connect and remove the jumper cables in the correct order, making sure that the cables do not touch each other or other metal.


Jumper Cable Removal


A. Heavy, Unpainted Metal Engine Part B. Good Battery C. Dead Battery


To disconnect the jumper cables from both vehicles, do the following: 1. Disconnect the black negative (−) cable from


the vehicle that had the dead battery.


2. Disconnect the black negative (−) cable from


the vehicle with the good battery.


3. Disconnect the red positive (+) cable from the


vehicle with the good battery.


4. Disconnect the red positive (+) cable from the


other vehicle.


Perform ″Power Window Initialize″ steps under Power Windows on page 82, if the vehicle has experienced power loss. Rear Axle When to Check Lubricant It is not necessary to regularly check rear axle fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspected and repaired.


How to Check Lubricant


To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the filler plug hole, you will need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole.


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Headlamp Aiming


What to Use To add lubricant when the level is low, use SAE 75W–90 Synthetic Gear Lubricant (GM Part No. 89021677) or equivalent meeting GM Specification 9986115. To completely refill after draining, add 4 ounces (118 ml) of Limited-Slip Differential Lubricant Additive (GM Part No. 1052358) or equivalent. Then fill to the bottom of the filler plug hole with the Synthetic Gear Lubricant.


Your vehicle has high intensity discharge (HID) visual optical aiming type headlamps. The aim has been preset at the factory and should need no further adjustment. If you suspect that the headlamps need to be reaimed, it is recommended that you contact your dealer for service. However, it is possible for you to re-aim your headlamps as described in the following procedure. Notice: To make sure your headlamps are aimed properly, read all the instructions before beginning. Failure to follow these instructions could cause damage to headlamp parts.


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The vehicle should be properly prepared as follows: (cid:127) The vehicle should be placed so the


headlamps are 25 ft (7.6 m) from a light colored wall.


(cid:127) The vehicle must have all four tires on a


perfectly level surface which is level all the way to the wall.


(cid:127) The vehicle should be placed so it is


perpendicular to the wall.


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