2005 Hummer H2 Owners Manual

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in a skid. In any rear blowout, remove your foot from the accelerator pedal. Get the vehicle under control by steering the way you want the vehicle to go. It may be very bumpy and noisy, but you can still steer. Gently brake to a stop, well off the road if possible. {CAUTION: Lifting a vehicle and getting under it to do maintenance or repairs is dangerous without the appropriate safety equipment and training. The jack provided with your vehicle is designed only for changing a ﬂat tire. If it is used for anything else, you or others could be badly injured or killed if the vehicle slips off the jack. Use the jack provided with your vehicle only for changing a ﬂat tire. If a tire goes ﬂat, the next part shows how to use your jacking equipment to change a ﬂat tire safely. 5-69 Changing a Flat Tire If a tire goes ﬂat, avoid further tire and wheel damage by driving slowly to a level place. Turn on your hazard warning ﬂashers. {CAUTION: Changing a tire can be dangerous. The vehicle can slip off the jack and roll over or fall on you or other people. You and they could be badly injured or even killed. Find a level place to change your tire. To help prevent the vehicle from moving: 1. Set the parking brake ﬁrmly. 2. Put the shift lever in PARK (P). CAUTION: (Continued) CAUTION: (Continued) 3. Be sure the transfer case is in a drive gear—not in NEUTRAL. 4. Turn off the engine and do not restart while the vehicle is raised. 5. Do not allow passengers to remain in the vehicle. To be even more certain the vehicle will not move, you can put blocks at the front and rear of the tire farthest away from the one being changed. That would be the tire on the other side, at the opposite end of the vehicle. 5-70 When you have a ﬂat tire, use the following example as a guide to assist you in the placement of wheel blocks. The following steps will tell you next how to use the jack and change a tire. Removing the Spare Tire and Tools Removing the Tools SUV The equipment you’ll need is behind and to the side of the driver’s side second row seat. To remove the equipment, do the following: 1. Fold the driver’s side second row seat down. See 60/40 Split Bench Seat on page 1-7 for more information. 2. Turn the wingnut (A) counterclockwise to release the jack. 3. Turn the wingnut (B), which holds the jack tool kit, counterclockwise to release it. 5-71 4. Open the tool bag and you will ﬁnd the following tools which you will use to remove the spare tire and ﬂat tire: SUT The equipment you’ll need is the rear cargo compartment on the passenger’s side of the vehicle. Unlock the cover and pull it off. A. Jack Handle B. Jack Handle Extension (Used for Rear Flats Only) C. Wheel Wrench D. Ratchet E. Spanner Wrench 5-72 You will ﬁrst need to remove the tool kit/ﬁrst aid kit to allow you enough room to remove the tire changing equipment. Once removed, you will see the following tire changing equipment: A. Tool Bag B. Jack C. Jack Wing Nut D. Wheel Blocks Wing Nut E. Wheel Blocks To remove the equipment, do the following: 1. Unscrew the wingnut holding the wheel blocks and remove them. 2. Unscrew the wingnut holding the jack and remove it. 5-73 4. Open the tool bag and you will ﬁnd the following tools which you will use to remove the spare tire and change a ﬂat tire: 3. Pull the tool bag up and out from the front retention clip. 5-74 A. Jack Handle B. Jack Handle C. Wheel Wrench D. Ratchet Extension (Used for Rear Flats Only) Removing the Inside-Mounted Spare Tire The spare tire and wheel blocks are stored in the rear cargo area. You will need to remove the tire cover to get to them. 1. Remove the wheel blocks from the tire retainer plate by turning the wingnut counterclockwise. A. Spare or Flat Tire B. Receiver Extension (If Equipped) Not used for tire changing procedure. See “Receiver Extension” under If You Are Stuck: In Sand, Mud, Ice or Snow on page 4-52. C. Tire Retainer Plate D. Nut E. Wheel Blocks 2. Place the ﬂat end of the wheel wrench through the hole in the spanner wrench. 5-75 The tools you’ll be using to ﬁnish changing a ﬂat tire are the following: 3. Place the end of the spanner wrench on the nut and then turn the wheel wrench counterclockwise to loosen the nut holding the tire to the carrier. 4. Pull off the tire retainer plate and set it aside. Remove the spare tire from the wheel carrier. 5. Put the spare tire near the ﬂat tire. A. Jack B. Wheel Blocks C. Jack Handle D. Jack Handle Extension E. Wheel Wrench F. Ratchet Before proceeding, be sure to set the wheel blocks at the appropriate tires as shown previously. 5-76 Removing the Spare-Tire-Carrier-Mounted Spare Tire The outside-mounted spare tire is attached to the tire carrier. To remove the spare tire, do the following: 1. Open the tire carrier. See Tailgate (SUT) on page 2-16 for tire carrier operation. 2. Unscrew the wingnut on the back of the tire carrier. 3. Pull off the license plate holder from the spare tire. 4. Slide the ratchet onto the wheel wrench with the DOWN mark facing you. 5-77 The tools you’ll be using to ﬁnish changing a ﬂat tire include the following: 5. Turn the ratchet counterclockwise to loosen the wheel nuts. 6. Remove the three wheel nuts holding the spare tire onto the tire carrier. 7. Pull off and gently lower the spare tire to the ground. Set it next to the ﬂat tire. A. Jack B. Wheel Blocks C. Jack Handle D. Jack Handle Extension E. Wheel Wrench F. Ratchet Before proceeding, be sure to set the wheel blocks at the appropriate tires as shown previously. 5-78 Removing the Flat Tire and Installing the Spare Tire 1. To remove the center cap, place the ﬂat end of the wheel wrench in the slot on the wheel and gently pry the center cap out. 2. Slide the ratchet onto the wheel wrench with the DOWN mark facing you. 3. Turn the ratchet counterclockwise to loosen the wheel nuts. Don’t remove them yet. You will now need to jack the vehicle up using the instructions following. 5-79 4. Assemble the jack and tools as follows: Front Flat Tire: Attach the jack handle with the hook end connected to the u-hook/clevis on the jack. Slide the ratchet onto the jack handle with the UP mark facing you. Rear Flat Tire: Assemble the jack together with the jack handle and the jack handle extension. Press the retention clip on the jack handle extension (arrow) so it engages into the jack handle. Slide the ratchet onto the jack handle extension with the UP mark facing you. 5-80 5. Turn the ratchet clockwise to raise the jack head to the lifting point. Front Flat Tire: Position the jack under the vehicle on the frame behind the ﬂat tire where the frame sections overlap. See the graphic following for an approximate measurement of the jack location on the frame. Front Flat Tire X = 28.5 inches (72.0 cm) 5-81 {CAUTION: Raising your vehicle with the jack improperly positioned can damage the vehicle and even make the vehicle fall. To help avoid personal injury and vehicle damage, be sure to ﬁt the jack lift head into the proper location before raising the vehicle. 6. Turn the ratchet clockwise to raise the vehicle. Raise the vehicle far enough off the ground so there is enough room for the spare tire to clear the ground. Rear Flat Tire: Place the jack under the curved rear axle pad. Make sure the jack head is positioned so that the rear axle pad is resting securely on the jack head. Rear Flat Tire {CAUTION: Getting under a vehicle when it is jacked up is dangerous. If the vehicle slips off the jack you could be badly injured or killed. Never get under a vehicle when it is supported only by a jack. 5-82 7. Remove all the wheel nuts and take off the ﬂat tire. 8. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. {CAUTION: Never use oil or grease on studs or nuts. If you do, the nuts might come loose. Your wheel could fall off, causing a serious accident. {CAUTION: Rust or dirt on the wheel, or on the parts to which it is fastened, can make the wheel nuts become loose after a time. The wheel could come off and cause an accident. When you change a wheel, remove any rust or dirt from the places where the wheel attaches to the vehicle. In an emergency, you can use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if you need to, to get all the rust or dirt off. 5-83 9. After mounting the spare, put the wheel nuts back on with the rounded end of the nuts toward the wheel. 10. Tighten each wheel nut by hand. Then use the ratchet/wheel wrench to tighten the nuts, with the UP mark facing you, clockwise until the wheel is held against the hub. You will not be tightening the nuts fully yet. 5-84 Front Position Rear Position 11. Lower the vehicle by turning the ratchet counterclockwise, with the DOWN mark facing you. Then lower the jack completely. {CAUTION: Incorrect wheel nuts or improperly tightened wheel nuts can cause the wheel to come loose and even come off. This could lead to an accident. Be sure to use the correct wheel nuts. If you have to replace them, be sure to get new GM original equipment wheel nuts. Stop somewhere as soon as you can and have the nuts tightened with a torque wrench to the proper torque speciﬁcation. See Capacities and Speciﬁcations on page 5-112 for wheel nut torque speciﬁcation. Improperly tightened wheel nuts can lead Notice: to brake pulsation and rotor damage. To avoid expensive brake repairs, evenly tighten the wheel nuts in the proper sequence and to the proper torque speciﬁcation. See Capacities and Speciﬁcations on page 5-112 for the wheel nut torque speciﬁcation. 5-85 12. Tighten the nuts ﬁrmly in a crisscross sequence as shown by turning the ratchet clockwise, with the UP mark facing you. 13. When you install the wheel and tire, you must also reinstall the center cap. Place the cap on the wheel and tap it into place until it sits ﬂush with the wheel. Storing a Flat or Spare Tire and Tools Inside-Mounted Tire Use the art and text following to help you store the spare or ﬂat tire back into its proper spot when you are done. Store the ﬂat or spare tire back inside the vehicle on the spare tire mount. 5-86 A. Spare or Flat Tire B. Receiver Extension (If Equipped) C. Tire Retainer Plate D. Nut E. Wheel Blocks To store the ﬂat or spare tire on the spare tire mount, do the following: 1. Slide the ﬂat or spare tire onto the tire carrier. 2. Slide the tire retainer plate into the wheel opening. Be sure that the stud attached to the tire carrier passes through the hole in the tire retainer plate. 3. Tighten the nut by hand until the tire retainer plate is snug against the tire. 4. Use the wheel wrench and spanner to tighten the nut ﬁrmly. Try to move the tire back and forth slightly to be sure it is secure. Spare-Tire-Carrier-Mounted Tire To store the ﬂat or spare tire on the tire carrier, do the following: 1. Close the tire carrier. See Tailgate (SUT) on page 2-16 for tire carrier operation. 2. Place the ﬂat or spare tire onto the tire carrier with the outside of the wheel facing you. 3. Reinstall the three nuts holding spare or ﬂat tire to the tire carrier. Tighten the nuts by hand. 5. Reattach the wheel blocks to the tire retainer plate and tighten the wing nut. 6. Reinstall the tire cover onto the spare or ﬂat tire. 4. Use the ratchet and wheel wrench to tighten the nuts ﬁrmly. Try to move the tire back and forth slightly to be sure it is secure. 5-87 Storing the Tools SUV Follow these instructions to store the jack and tools: 1. Lower the jack completely. 2. Place the jack in the mounting bracket. 3. Tighten the wingnut (A) until the jack is securely fastened. 5. Slide the license plate holder onto the spare or ﬂat tire. Secure it from the back of the tire carrier with the wing nut. If you choose not to reinstall the spare or ﬂat tire on the vehicle, you will still need to reinstall the license plate holder on the spare tire carrier. 5-88 4. Place the tools in the bag. 5. Slide the securing clip over the bag and secure the bag to the ﬂoor by tightening the wingnut (B) to the stud coming out of the ﬂoor. In order to reduce the potential of the jack squeaking or rattling, you will need to preload the jack so it ﬁts tightly in the mounting bracket. To do this, turn the u-hook/clevis at the top of the jack clockwise until the jack is held tight in the mounting bracket. SUT Follow these instructions to store the jack and tools: 1. Lower the jack completely. 2. Place the jack (B) in the mounting bracket in the rear cargo compartment. 3. Tighten the wingnut (C) until the jack is securely fastened. In order to reduce the potential of the jack squeaking or rattling, you will need to preload the jack so it ﬁts tightly in the mounting bracket. To do this, turn the u-hook/clevis at the top of the jack clockwise until the jack is held tight in the mounting bracket. 4. Place the wheel blocks (E) onto the mounting stud and tighten the wingnut (D) to secure them. 5. Place the tools in the tool bag (A), roll the bag together tightly and neatly and then close it with the hook and loop fasteners. If you do not roll the tool bag tightly and neatly, you will have trouble getting it back into the storage retention clips in the next step. 5-89 6. Slide the tool bag into the rear retention clip. It may help to twist the tool bag as you slide it into the rear retention clip. 7. Push the front of the tool bag down into the front retention clip. 5-90 8. Replace the jack cover. Be sure the tabs on the back of the jack cover ﬁt into the slots on the cargo box before closing the jack cover. 9. Close the spare tire carrier to ensure it securely latches. See Tailgate (SUT) on page 2-16 for tire carrier operation. Spare Tire Your vehicle, when new, had a fully inﬂated spare tire. A spare tire may lose air over time, so check its inﬂation pressure regularly. See Inﬂation - Tire Pressure on page 5-60 and Loading Your Vehicle on page 4-58 for information regarding proper tire inﬂation and loading your vehicle. For instruction on how to remove, install or store a spare tire, see Changing a Flat Tire on page 5-70 and Removing the Flat Tire and Installing the Spare Tire on page 5-79. After installing the spare tire on your vehicle, you should stop as soon as possible and make sure the spare is correctly inﬂated. Have the damaged or ﬂat road tire repaired or replaced as soon as you can and installed back onto your vehicle. This way, a spare tire will be available in case you need it again. Your vehicle may have a different size spare tire than the road tires—those originally installed on your vehicle. This spare tires was developed for use on your vehicle, so it’s all right to drive on it. If your vehicle has a spare tire that does not match your vehicle’s original road tires and wheels in size and type, do not include the spare in the tire rotation. 5-91 Appearance Care Cleaning products can be hazardous. Some are toxic. Other cleaning products can burst into ﬂames if a match is struck near them or if they get on a hot part of the vehicle. Some are dangerous if their fumes are inhaled in a closed space. When anything from a container is used to clean the vehicle, be sure to follow the manufacturer’s warnings and instructions. Always open the doors or windows of the vehicle when cleaning the inside. Never use these to clean the vehicle: (cid:127) Gasoline (cid:127) Benzene (cid:127) Naphtha (cid:127) Carbon Tetrachloride (cid:127) Acetone (cid:127) Paint Thinner Turpentine Lacquer Thinner (cid:127) Nail Polish Remover They can all be hazardous — some more than others — and they can all damage the vehicle, too. 5-92 Do not use any of these products unless this manual says you can. In many uses, these will damage the vehicle: (cid:127) Alcohol Laundry Soap (cid:127) Bleach (cid:127) Reducing Agents Fabric/Carpet Use a vacuum cleaner often to get rid of dust and loose dirt. Wipe vinyl, leather, plastic, and painted surfaces with a clean, damp cloth. GM-approved cleaning products can be obtained from your dealer. Here are some cleaning tips: (cid:127) Always read the instructions on the cleaner label. (cid:127) Clean up stains as soon as you can before they set. (cid:127) Carefully scrape off any excess stain. (cid:127) Use a clean cloth or sponge, and change to a clean area often. A soft brush may be used if stains are stubborn. To avoid forming a ring on fabric after spot cleaning, clean the entire area immediately or it will set. (cid:127) (cid:127) (cid:127) (cid:127) Most stains can be removed with club soda water. To clean, use the following instructions: 1. For liquids: blot with a clean, soft, white cloth. For solids: remove as much as possible and then vacuum or brush. 2. Apply club soda water to a clean, soft, white cloth. Do not over-saturate; the cloth should not drip water. 3. Clean the entire area. Avoid getting the fabric too wet. 4. Start cleaning from the seams into the stain to avoid a ring effect. 5. Continue cleaning, using a clean area of the cloth each time it becomes soiled. 6. When the stain is removed, blot the cleaned area with another dry, clean, soft, white cloth. Using Cleaner on Fabric 1. First, try the cleaner in an inconspicuous area to make sure the cleaner does not affect the color of the fabric. 2. For liquids: blot with a clean, soft, white cloth. For solids: remove as much as possible and then vacuum or brush. 3. Spray a small amount of the cleaner onto a clean soft, white, cloth. Do not apply spray directly to the fabric. 4. Start cleaning from the seams into the stain to avoid a ring effect. 5. Continue cleaning, using a clean area of the cloth each time it becomes soiled. 6. When the stain is removed, blot the cleaned area with another dry, clean, soft, white cloth. 7. If the cleaner leaves a ring effect, follow up with the club soda water instructions given earlier in this section. 5-93 Special Fabric Cleaning Problems Stains caused by such things as catsup, black coffee, egg, fruit, fruit juice, milk, soft drinks, vomit, urine, and blood can be removed using the club soda water instructions given earlier in this section. If an odor lingers after cleaning vomit or urine, treat the area with a water and baking soda solution: 1 teaspoon (5 ml) of baking soda to 1 cup (250 ml) of lukewarm water. Let dry. Stains caused by oil and grease can be cleaned with an approved GM cleaner and a clean, white cloth. 1. Carefully scrape off excess stain. 2. Clean with cool water and allow to dry completely. 3. If a stain remains, follow the cleaner instructions described earlier. Vinyl Use warm water and a clean cloth. (cid:127) Rub with a clean, damp cloth to remove dirt. This may have to be done more than once. Things like tar, asphalt, and shoe polish will stain if they are not removed quickly. Use a clean cloth and vinyl cleaner. See your dealer for this product. Leather Use a soft cloth with lukewarm water and a mild soap or saddle soap and wipe dry with a soft cloth. Then, let the leather dry naturally. Do not use heat to dry. For stubborn stains, use a leather cleaner. (cid:127) Never use oils, varnishes, solvent-based or abrasive cleaners, furniture polish, or shoe polish on leather. (cid:127) Soiled or stained leather should be cleaned immediately. If dirt is allowed to work into the ﬁnish, it can harm the leather. Instrument Panel Use only mild soap and water to clean the top surfaces of the instrument panel. Sprays containing silicones or waxes may cause annoying reﬂections in the windshield and even make it difficult to see through the windshield under certain conditions. Interior Plastic Components Use only a mild soap and water solution on a soft cloth or sponge. Commercial cleaners may affect the surface ﬁnish. 5-94 (cid:127) (cid:127) Wood Panels Use a clean cloth moistened in warm, soapy water (use mild dish washing soap). Dry the wood immediately with a clean cloth. Speaker Covers Vacuum around a speaker cover gently, so that the speaker will not be damaged. Clean spots with just water and mild soap. Glass Surfaces Glass should be cleaned often. GM Glass Cleaner or a liquid household glass cleaner will remove normal tobacco smoke and dust ﬁlms on interior glass. See Vehicle Care/Appearance Materials on page 5-100. Notice: glass surfaces on your vehicle, you could scratch the glass and/or cause damage to the rear window defogger and the integrated radio antenna. When cleaning the glass on your vehicle, use only a soft cloth and glass cleaner. If you use abrasive cleaners when cleaning Care of Safety Belts Keep belts clean and dry. {CAUTION: Do not bleach or dye safety belts. If you do, it may severely weaken them. In a crash, they might not be able to provide adequate protection. Clean safety belts only with mild soap and lukewarm water. Weatherstrips Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth. During very cold, damp weather frequent application may be required. See Recommended Fluids and Lubricants on page 6-12. 5-95 If you drive your vehicle through an Notice: Certain add-on accessories can change the dimensions of your vehicle. If you’ve added items to the outside of your vehicle, it might not ﬁt properly in a standard car wash. Your vehicle and the car wash could be damaged. To help prevent damage, know how accessories have changed the dimensions of your vehicle and check with the car wash manager before entering a car wash. Notice: automatic car wash that does not have enough clearance for any roof-mounted accessories (such as off-road lamps or a roof basket) on your vehicle, you can damage your vehicle. To avoid damaging your vehicle in a car wash, remove any roof-mounted accessories if you can, and do not use an automatic car wash while roof-mounted accessories are on your vehicle. See Power Winch Platform on page 4-57 and Off-Road Lamps on page 3-16 for more information. Also see Luggage Carrier on page 2-55 for more information. Washing Your Vehicle The paint ﬁnish on the vehicle provides beauty, depth of color, gloss retention, and durability. The best way to preserve the vehicle’s ﬁnish is to keep it clean by washing it often with lukewarm or cold water. Do not wash the vehicle in the direct rays of the sun. Use a car washing soap. Do not use strong soaps or chemical detergents. Be sure to rinse the vehicle well, removing all soap residue completely. GM-approved cleaning products can be obtained from your dealer. See Vehicle Care/Appearance Materials on page 5-100. Do not use cleaning agents that are petroleum based, or that contain acid or abrasives. All cleaning agents should be ﬂushed promptly and not allowed to dry on the surface, or they could stain. Dry the ﬁnish with a soft, clean chamois or an all-cotton towel to avoid surface scratches and water spotting. High pressure car washes may cause water to enter the vehicle. The overall height, width, and underbody clearances of the HUMMER H2 are similar to current General Motors’ full-size light duty trucks. This means a HUMMER H2 should ﬁt in a standard car wash. But, if your vehicle has added accessories like roof-mounted lamps or a roof basket, it might not ﬁt properly in a standard car wash. 5-96 Cleaning Exterior Lamps/Lenses Use only lukewarm or cold water, a soft cloth and a car washing soap to clean exterior lamps and lenses. Follow instructions under Washing Your Vehicle on page 5-96. Finish Care Occasional waxing or mild polishing of the vehicle by hand may be necessary to remove residue from the paint ﬁnish. GM-approved cleaning products can be obtained from your dealer. See Vehicle Care/Appearance Materials on page 5-100. The vehicle has a “basecoat/clearcoat” paint ﬁnish. The clearcoat gives more depth and gloss to the colored basecoat. Always use waxes and polishes that are non-abrasive and made for a basecoat/clearcoat paint ﬁnish. Notice: Machine compounding or aggressive polishing on a basecoat/clearcoat paint ﬁnish may damage it. Use only non-abrasive waxes and polishes that are made for a basecoat/clearcoat paint ﬁnish on your vehicle. Foreign materials such as calcium chloride and other salts, ice melting agents, road oil and tar, tree sap, bird droppings, chemicals from industrial chimneys, etc., can damage the vehicle’s ﬁnish if they remain on painted surfaces. Wash the vehicle as soon as possible. If necessary, use non-abrasive cleaners that are marked safe for painted surfaces to remove foreign matter. Exterior painted surfaces are subject to aging, weather, and chemical fallout that can take their toll over a period of years. To help keep the paint ﬁnish looking new, keep the vehicle in a garage or covered whenever possible. 5-97 Windshield, Backglass, and Wiper Blades If the windshield is not clear after using the windshield washer, or if the wiper blade chatters when running, wax, sap or other material may be on the blade or windshield. Clean the outside of the windshield with a full-strength glass cleaning liquid. The windshield is clean if beads do not form when you rinse it with water. Grime from the windshield will stick to the wiper blades and affect their performance. Clean the blade by wiping vigorously with a cloth soaked in full-strength windshield washer solvent. Then rinse the blade with water. Check the wiper blades and clean them as necessary; replace blades that look worn. Aluminum Wheels Keep the wheels clean using a soft clean cloth with mild soap and water. Rinse with clean water. After rinsing thoroughly, dry with a soft clean towel. A wax may then be applied. The surface of these wheels is similar to the painted surface of the vehicle. Do not use strong soaps, chemicals, abrasive polishes, abrasive cleaners, cleaners with acid, or abrasive cleaning brushes on them because the surface could be damaged. Do not use chrome polish on aluminum wheels. Do not take the vehicle through an automatic car wash that has silicone carbide tire cleaning brushes. These brushes can also damage the surface of these wheels. 5-98 Tires To clean the tires, use a stiff brush with tire cleaner. Notice: Using petroleum-based tire dressing products on your vehicle may damage the paint ﬁnish and/or tires. When applying a tire dressing, always wipe off any overspray from all painted surfaces on your vehicle. Sheet Metal Damage If the vehicle is damaged and requires sheet metal repair or replacement, make sure the body repair shop applies anti-corrosion material to parts repaired or replaced to restore corrosion protection. Original manufacturer replacement parts will provide the corrosion protection while maintaining the warranty. Finish Damage Any stone chips, fractures or deep scratches in the ﬁnish should be repaired right away. Bare metal will corrode quickly and may develop into major repair expense. Minor chips and scratches can be repaired with touch-up materials available from your GM dealer. Larger areas of ﬁnish damage can be corrected in your GM dealer’s body and paint shop. Underbody Maintenance Chemicals used for ice and snow removal and dust control can collect on the underbody. If these are not removed, corrosion and rust can develop on the underbody parts such as fuel lines, frame, ﬂoor pan, and exhaust system even though they have corrosion protection. At least every spring, ﬂush these materials from the underbody with plain water. Clean any areas where mud and debris can collect. Dirt packed in close areas of the frame should be loosened before being ﬂushed. Your GM dealer or an underbody car washing system can do this for you. Chemical Paint Spotting Some weather and atmospheric conditions can create a chemical fallout. Airborne pollutants can fall upon and attack painted surfaces on the vehicle. This damage can take two forms: blotchy, ring-shaped discolorations, and small, irregular dark spots etched into the paint surface. Although no defect in the paint job causes this, GM will repair, at no charge to the owner, the surfaces of new vehicles damaged by this fallout condition within 12 months or 12,000 miles (20 000 km) of purchase, whichever occurs ﬁrst. 5-99 Vehicle Care/Appearance Materials See your GM dealer for more information on purchasing the following products. Description Usage Interior and exterior polishing cloth. Removes tar, road oil, and asphalt. Use on chrome or stainless steel. Removes soil and black marks from whitewalls. Cleans vinyl tops, upholstery, and convertible tops. Removes dirt, grime, smoke and ﬁngerprints. Removes dirt and grime from chrome wheels and wire wheel covers. Removes dust, ﬁngerprints, and surface contaminants. Spray on and wipe off. Polishing Cloth Wax-Treated Tar and Road Oil Remover Chrome Cleaner and Polish White Sidewall Tire Cleaner Vinyl Cleaner Glass Cleaner Chrome and Wire Wheel Cleaner Finish Enhancer 5-100 Description Usage Cleaner Wax Swirl Remover Polish Wash Wax Concentrate Foaming Tire Shine Low Gloss Removes swirl marks, ﬁne scratches, and other light surface contamination. Removes light scratches and protects ﬁnish. Cleans, shines, and protects in one step. No wiping necessary. Medium foaming shampoo. Cleans and lightly waxes. Biodegradable and phosphate free. Quickly removes spots and stains from carpets, vinyl, and cloth upholstery. Odorless spray odor eliminator used on fabrics, vinyl, leather and carpet. See your General Motors parts department for these products. See Recommended Fluids and Lubricants on page 6-12. Odor Eliminator Spot Lifter Vehicle Identiﬁcation Vehicle Identiﬁcation Number (VIN) This is the legal identiﬁer for your vehicle. It appears on a plate in the front corner of the instrument panel, on the driver’s side. You can see it if you look through the windshield from outside your vehicle. The VIN also appears on the Vehicle Certiﬁcation and Service Parts labels and the certiﬁcates of title and registration. Engine Identiﬁcation The 8th character in your VIN is the engine code. This code will help you identify your engine, speciﬁcations and replacement parts. Service Parts Identiﬁcation Label You will ﬁnd this label on the inside of the glove box. It is very helpful if you ever need to order parts. On this label, you will ﬁnd the following: (cid:127) VIN (cid:127) Model designation (cid:127) Paint information (cid:127) Production options and special equipment Be sure that this label is not removed from the vehicle. 5-101 Electrical System Add-On Electrical Equipment Notice: Don’t add anything electrical to your vehicle unless you check with your dealer ﬁrst. Some electrical equipment can damage your vehicle and the damage wouldn’t be covered by your warranty. Some add-on electrical equipment can keep other components from working as they should. Your vehicle has an airbag system. Before attempting to add anything electrical to your vehicle, see Servicing Your Airbag-Equipped Vehicle on page 1-68. Windshield Wiper Fuses The windshield wiper motor is protected by an internal circuit breaker and a fuse. If the motor overheats due to heavy snow, etc., the wiper will stop until the motor cools. If the overload is caused by some electrical problem and not snow, etc., be sure to get it ﬁxed. Power Windows and Other Power Options Circuit breakers protect the power windows and other power accessories. When the current load is too heavy, the circuit breaker opens and closes, protecting the circuit until the problem is ﬁxed or goes away. 5-102 Fuses and Circuit Breakers The wiring circuits in your vehicle are protected from short circuits by a combination of fuses, circuit breakers and fusible thermal links. This greatly reduces the chance of ﬁres caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating. If you ever have a problem on the road and don’t have a spare fuse, you can borrow one that has the same amperage. Just pick some feature of your vehicle that you can get along without – like the radio or cigarette lighter – and use its fuse, if it is the correct amperage. Replace it as soon as you can. Instrument Panel Fuse Block The fuse block access door is located on the driver’s side edge of the instrument panel. Pull off the cover to access the fuse block. To remove fuses if you don’t have a fuse extractor, hold the end of the fuse between your thumb and index ﬁnger and pull straight out. You may have spare fuses located behind the fuse block access door. These can be used to replace a bad fuse. However, make sure it is of the correct amperage. 5-103 Fuses TBC ACCY IGN 3 4WD HTR A/C LOCK HVAC 1 L DOOR CRUISE UNLOCK Usage Truck Body Controller Accessory Rear Heated Seats Module Four-Wheel Drive Switch, Air Suspension Switch/Module Not Used Power Door Lock Relay (Lock Function) Inside Rearview Mirror, Climate Control System Driver’s Door Harness Connection Cruise Control Power Door Lock Relay (Unlock Function) RR FOG LP BRAKE Not Used Brake Switch Usage Rear Window Wiper Switch Special Equipment Option Accessory Windshield Wipers Fuses RR Wiper SEO ACCY WS WPR 5-104 Fuses Usage DRIVER UNLOCK IGN 0 Power Door Lock Relay (Driver’s Door Unlock Function) Brake Transmission Shift Interlock, Powertrain Control Module, Transmission TBC IGN 0 Truck Body Controller VEH CHMSL Vehicle and Trailer High Mounted Stoplamp LT TRLR ST/TRN Left Turn Signal/Stop Trailer LT TRN VEH STOP Left Turn Signals and Sidemarkers Vehicle Stoplamps, Brake Module, Electronic Throttle Control Module Fuses BODY DDM LOCKS ECC TBC 2C FLASH CB LT DOORS TBC 2B TBC 2A Usage Harness Connector Driver Door Module Rear Doors and Liftgate Power Lock Relay Feed Liftgate Truck Body Controller Flasher Module Left Rear Power Window Circuit Breaker and Driver Door Module Truck Body Controller Truck Body Controller RT TRLR ST/TRN Right Turn Signal/Stop Trailer Circuit Breaker Usage RT TRN Right Turn Signals and Sidemarkers AUX PWR 2 Midgate Controller (SUT Only) 5-105 Center Instrument Panel Fuse Block The center instrument panel utility block is located underneath the instrument panel, to the left of the steering column. Device SEO TRAILER UPFIT SL RIDE HDLR 2 BODY DEFOG HDLNR 1 SPARE RELAY CB SEAT CB RT DOOR SPARE INFO Usage Special Equipment Option/Off-road Lamps Harness Connector Trailer Brake Wiring Upﬁtter (Not Used) Ride Control (Not Used) Headliner Wiring Connector 2 Body Wiring Connector Rear Defogger Relay Headliner Wiring Connector 1 Not Used Driver and Passenger Seat Module Circuit Breaker Rear Right Power Window, Passenger Door Module Not Used Not Used 5-106 Underhood Fuse Block The underhood fuse block in the engine compartment is located on the driver’s side of the vehicle near the battery. Lift the cover for access to the fuse/relay block. To remove fuses if you don’t have a fuse extractor, hold the end of the fuse between your thumb and index ﬁnger and pull straight out. See Engine Compartment Overview on page 5-12 for more information on its location. 5-107 5-108 Fuses GLOW PLUG CUST FEED HYBRID STUD #1 MBEC 1 BLOWER LBEC 2 STUD #2 ABS VSES/ECAS IGN A IGN B Usage Not Used Gasoline Accessory Power Hybrid Accessory Power/Trailer Wiring Mid Bussed Electrical Center Power Feed, Front Seats, Right Doors Front Climate Control Fan Left Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet—Rear Cargo Area and Instrument Panel Accessory Power/Trailer Wiring Brake Feed Anti-Lock Brakes Electronically Controlled Air Suspension Ignition Switch Ignition Switch Fuses LBEC 1 TRL PARK RR PARK LR PARK PARK LP STRTR INTPARK STOP LP TBC BATT S/ROOF SEO B2 4WS RR HVAC Usage Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module Parking Lamps Trailer Wiring Right Rear Parking and Sidemarker Lamps Left Rear Parking and Sidemarker Lamps Parking Lamps Relay Starter Relay Roof Marker Lamps Stoplamps Truck Body Controller Battery Feed Sunroof Off-Road Lamps Vent Solenoid Canister Not Used 5-109 Fuses Usage Instrument Panel Outlets, Rear Cargo Area Power Outlets, Console PCM Ignition Powertrain Control Module Electronic Throttle Control, Electronic Brake Controller Ignition Coil, Fuel Injectors-Bank 1 Ignition Coil, Fuel Injectors-Bank 2 Instrument Panel Cluster, Air Conditioning Relay, Turn Signal/Hazard Switch, Starter Relay, Electronic Brake Controller TC2 Mode Switch Electronic Brake Controller Battery Feed Backup Lamps Trailer Wiring Powertrain Control Module, Fuel Pump Fuel Pump (Relay) AUX PWR IGN 1 PCM 1 ETC/ECM INJ 1 INJ 2 IGN E RTD TRL B/U PCM B F/PMP 5-110 Fuses 02A B/U LP RR DEFOG HDLP-HI PRIME O2B AIRBAG FRT PARK DRL SEO IGN TBC IGN1 HI HDLP-LT LH HID DRL RVC Usage Oxygen Sensors Back-up Lamps, Automatic Transmission Shift Lock Control System Rear Window Defogger Headlamp High Beam Relay Not Used Oxygen Sensors Supplemental Inﬂatable Restraint System Front Parking Lamps, Sidemarker Lamps Daytime Running Lamps (Relay) Rear Defog Relay Truck Body Controller Ignition High Beam Headlamp-Left Not Used Daytime Running Lamps Regulated Voltage Control Usage Instrument Panel Cluster/Driver Information Center Climate Control Controller/Electronically Controlled Air Suspension Cigarette Lighter Fuses CRNK Usage Starting System LO HDLP-RT Headlamp Low Beam-Right FOG LP FOG LP HORN Not Used Not Used Horn Relay High Beam Headlamp-Right W/S WASH Fuses IPC/DIC HVAC/ECAS CIG LTR HI HDLP-RT HDLP-LOW A/C COMP A/C COMP RR WPR RADIO SEO B1 Headlamp Low Beam Relay Air Conditioning Compressor Relay Air Conditioning Compressor Rear Wiper/Washer Audio System Mid Bussed Electrical Center, HomeLink, Rear Heated Seats LO HDLP-LT Headlamp Low Beam-Left BTSI Brake Transmission Shift Interlock System W/S WASH INFO Windshield and Rear Window Washer Pump Relay Windshield and Rear Window Washer Pump OnStar RADIO AMP Radio Ampliﬁer RH HID HORN EAP TREC SBA Not Used Horn Not Used All-Wheel Drive Module Not Used 5-111 Capacities and Speciﬁcations The following approximate capacities are given in English and metric. Please refer to Recommended Fluids and Lubricants on page 6-12 for more information. Capacities and Speciﬁcations Capacities English 1.6 lbs Application Air Conditioning Refrigerant R-134a Cooling System After reﬁll, the level must be rechecked. See Cooling System on page 5-29. Engine Oil with Filter After reﬁll, the level must be rechecked. Add enough engine oil so that the ﬂuid is within the proper operating range. See Engine Oil on page 5-13. Fuel Tank Wheel Nut Torque All capacities are approximate. When adding, be sure to ﬁll to the appropriate level, as recommended in this manual. 32.0 gallons 13.0 quarts 6.0 quarts 140 ft lb Metric 0.7 kg 12.7 L 121.0 L 190 Y 5.7 L Engine VORTEC™ 6000 V8 VIN Code Transmission Automatic Spark Plug Gap 0.040 inches (1.01 mm) Engine Speciﬁcations 5-112 Section 6 Maintenance Schedule Maintenance Schedule ......................................6-2 Introduction ...................................................6-2 Maintenance Requirements ..............................6-2 Your Vehicle and the Environment ....................6-2 Using Your Maintenance Schedule ....................6-3 Scheduled Maintenance ...................................6-4 Additional Required Services ............................6-6 Maintenance Footnotes ...................................6-7 Owner Checks and Services ............................6-9 At Each Fuel Fill ............................................6-9 At Least Once a Month ...................................6-9 At Least Once a Year ...................................6-10 Recommended Fluids and Lubricants ...............6-12 Normal Maintenance Replacement Parts ..........6-13 Engine Drive Belt Routing ..............................6-14 Maintenance Record .....................................6-15 6-1 Maintenance Schedule Introduction Important: Keep engine oil at the proper level and change as recommended. Have you purchased the GM Protection Plan? The Plan supplements your new vehicle warranties. See your Warranty and Owner Assistance booklet or your dealer for details. Maintenance Requirements Notice: Maintenance intervals, checks, inspections, replacement parts and recommended ﬂuids and lubricants as prescribed in this manual are necessary to keep your vehicle in good working condition. Any damage caused by failure to follow scheduled maintenance may not be covered by warranty. Your Vehicle and the Environment Proper vehicle maintenance not only helps to keep your vehicle in good working condition, but also helps the environment. All recommended maintenance is important. Improper vehicle maintenance can even affect the quality of the air we breathe. Improper ﬂuid levels or the wrong tire inﬂation can increase the level of emissions from your vehicle. To help protect our environment, and to keep your vehicle in good condition, be sure to maintain your vehicle properly. 6-2 Using Your Maintenance Schedule We at General Motors want to help you keep your vehicle in good working condition. But we do not know exactly how you will drive it. You may drive very short distances only a few times a week. Or you may drive long distances all the time in very hot, dusty weather. You may use your vehicle in making deliveries. Or you may drive it to work, to do errands or in many other ways. Because of all the different ways people use their vehicles, maintenance needs vary. You may need more frequent checks and replacements. So please read the following and note how you drive. If you have any questions on how to keep your vehicle in good condition, see your GM Goodwrench dealer. This schedule is for vehicles that: carry passengers and cargo within recommended limits. You will ﬁnd these limits on the tire and loading information label. See Loading Your Vehicle on page 4-58. are driven on reasonable road surfaces within legal driving limits. are driven off-road in the recommended manner. See Off-Road Driving on page 4-16. use the recommended fuel. See Gasoline Octane on page 5-5. The services in Scheduled Maintenance on page 6-4 should be performed when indicated. See Additional Required Services on page 6-6 and Maintenance Footnotes on page 6-7 for further information. {CAUTION: Performing maintenance work on a vehicle can be dangerous. In trying to do some jobs, you can be seriously injured. Do your own maintenance work only if you have the required know-how and the proper tools and equipment for the job. If you have any doubt, see your GM Goodwrench dealer to have a qualiﬁed technician do the work. Some maintenance services can be complex. So, unless you are technically qualiﬁed and have the necessary equipment, you should have your GM Goodwrench dealer do these jobs. When you go to your GM Goodwrench dealer for your service needs, you will know that GM-trained and supported service technicians will perform the work using genuine GM parts. If you want to get service information, see Service Publications Ordering Information on page 7-11. 6-3 (cid:127) (cid:127) (cid:127) (cid:127) Owner Checks and Services on page 6-9 tells you what should be checked, when to check it and what you can easily do to help keep your vehicle in good condition. The proper replacement parts, ﬂuids and lubricants to use are listed in Recommended Fluids and Lubricants on page 6-12 and Normal Maintenance Replacement Parts on page 6-13. When your vehicle is serviced, make sure these are used. All parts should be replaced and all necessary repairs done before you or anyone else drives the vehicle. We recommend the use of genuine GM parts. Scheduled Maintenance When the CHANGE ENGINE OIL light in the Driver Information Center (DIC) comes on, it means that service is required for your vehicle. Have your vehicle serviced 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 engine oil life system may not indicate that vehicle service 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 GM Goodwrench dealer has GM-trained service technicians who will perform this work using genuine GM parts and reset the system. If the engine oil life system is ever reset accidentally, you must service your vehicle within 3,000 miles (5 000 km) since your last service. Remember to reset the oil life system whenever the oil is changed. See Engine Oil Life System on page 5-16 for information on the Engine Oil Life System and resetting the system. When the CHANGE ENGINE OIL light appears, certain services, checks and inspections are required. Required services are described in the following for “Maintenance I” and “Maintenance II.” Generally, it is recommended that your ﬁrst service be Maintenance I, your second service be Maintenance II and that you alternate Maintenance I and Maintenance II thereafter. However, in some cases, Maintenance II may be required more often. Maintenance I — Use Maintenance I if the CHANGE ENGINE OIL light comes on within 10 months since vehicle was purchased or Maintenance II was performed. Maintenance II — Use Maintenance II if the previous service performed was Maintenance I. Always use Maintenance II whenever the light comes on 10 months or more since the last service or if the light has not come on at all for one year. 6-4 Scheduled Maintenance Service Maintenance I Maintenance II Change engine oil and ﬁlter. See Engine Oil on page 5-13. Reset oil life system. See Engine Oil Life System on page 5-16. An Emission Control Service. Lubricate chassis components. See footnote #. Visually check for any leaks or damage. See footnote (j). For vehicles driven in dusty/dirty conditions: Inspect engine air cleaner ﬁlter. If necessary, replace ﬁlter. See Engine Air Cleaner/Filter on page 5-18. An Emission Control Service. See footnote †. Rotate tires and check inﬂation pressures and wear. See Tires on page 5-54. Inspect brake system. See footnote (a). Check engine coolant and windshield washer ﬂuid levels and add ﬂuid as needed. Perform any needed additional services. See “Additional Required Services” in this section. Inspect suspension and steering components. See footnote (b). Inspect engine cooling system. See footnote (c). Inspect wiper blades. See footnote (d). Inspect restraint system components. See footnote (e). Lubricate body components. See footnote (f). Check transmission ﬂuid level and add ﬂuid as needed. • • • • • • • • • • • • • • • • • • • • • • 6-5 Additional Required Services The following services should be performed at the ﬁrst maintenance service (I or II) after the indicated miles (kilometers) shown for each item. Additional Required Services 75,000 25,000 (41 500) 50,000 (83 000) (125 000) Service and Miles (Kilometers) • • • • • • • • Inspect fuel system for damage or leaks. Inspect exhaust system for loose or damaged components. Change automatic transmission ﬂuid and ﬁlter (severe service). See footnote (h). Change automatic transmission ﬂuid and ﬁlter (normal service). Change transfer case ﬂuid. See footnote (g). Replace engine air cleaner ﬁlter. See Engine Air Cleaner/Filter on page 5-18. An Emission Control Service. Replace spark plugs and inspect spark plug wires. An Emission Control Service. 6-6 100,000 (166 000) 125,000 (207 500) 150,000 (240 000) • • • • • • • • • • • • • Additional Required Services (cont’d) Service and Miles (Kilometers) Engine cooling system service (or every 5 years, whichever occurs ﬁrst). An Emission Control Service. See footnote (i). Inspect engine accessory drive belt. An Emission Control Service. 25,000 (41 500) 50,000 (83 000) 75,000 (125 000) 100,000 (166 000) 125,000 (207 500) 150,000 (240 000) • • Maintenance Footnotes † The U.S. Environmental Protection Agency or the California Air Resources Board has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of the vehicle’s useful life. We, however, urge that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded. # Lubricate the front suspension, ball joints, steering linkage, transmission shift linkage and parking brake cable guides. Ball joints should not be lubricated unless their temperature is 10°F (-12°C) or higher, or they could be damaged. (a) Visually inspect brake lines and hoses for proper hook-up, binding, leaks, cracks, chaﬁng, etc. Inspect disc brake pads for wear and rotors for surface condition. Inspect other brake parts, including calipers, parking brake, etc. (b) Visually inspect front and rear suspension and steering system for damaged, loose or missing parts, signs of wear or lack of lubrication. Inspect power steering lines and hoses for proper hook-up, binding, leaks, cracks, chaﬁng, etc. Visually check constant velocity joints, rubber boots and axle seals for leaks. 6-7 (c) Visually inspect hoses and have them replaced if they are cracked, swollen or deteriorated. Inspect all pipes, ﬁttings and clamps; replace with genuine GM parts as needed. To help ensure proper operation, a pressure test of the cooling system and pressure cap and cleaning the outside of the radiator and air conditioning condenser is recommended at least once a year. (d) Visually inspect wiper blades for wear or cracking. Replace blade inserts that appear worn or damaged or that streak or miss areas of the windshield. (e) Make sure the safety belt reminder light and all your belts, buckles, latch plates, retractors and anchorages are working properly. Look for any other loose or damaged safety belt system parts. If you see anything that might keep a safety belt system from doing its job, have it repaired. Have any torn or frayed safety belts replaced. Also look for any opened or broken air bag coverings, and have them repaired or replaced. (The air bag system does not need regular maintenance.) (f) Lubricate all key lock cylinders, hood latch assembly, secondary latch, pivots, spring anchor, release pawl, rear compartment hinges, outer liftgate handle pivot points, rear door detent link, roller mechanism, liftgate handle pivot points, latch bolt, fuel door hinge, cargo door hinge, locks and folding seat hardware. More frequent lubrication may be required when exposed to a corrosive environment. Applying silicone grease on weatherstrips with a clean cloth will make them last longer, seal better and not stick or squeak. 6-8 SUT spare tire carrier hinge: Inspect for leaks and lubricate if required. Remove the setscrew at the hinge casting and add lubricant, moving the hinge back and forth periodically, until lubricant can be seen coming from the setscrew opening. Install setscrew and tighten to 7 ft lb (9 Y). See Recommended ﬂuids and Lubricants on page 6-12 for what lubricant to use. (g) Check vent hose at transfer case for kinks and proper installation. (h) Change automatic transmission ﬂuid and ﬁlter if the vehicle is mainly driven under one or more of these conditions: − In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. − In hilly or mountainous terrain. − When doing frequent trailer towing. − Uses such as found in taxi, police or delivery service. (i) Drain, ﬂush and reﬁll cooling system. See Engine Coolant on page 5-24 for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and ﬁller neck. Pressure test the cooling system and pressure cap. (j) A ﬂuid loss in any vehicle system could indicate a problem. Have the system inspected and repaired and the ﬂuid level checked. Add ﬂuid if needed. Owner Checks and Services These owner checks and services should be performed at the intervals speciﬁed to help ensure the safety, dependability and emission control performance of your vehicle. Your GM Goodwrench dealer can assist you with these checks and services. Be sure any necessary repairs are completed at once. Whenever any ﬂuids or lubricants are added to your vehicle, make sure they are the proper ones, as shown in Recommended Fluids and Lubricants on page 6-12. At Each Fuel Fill It is important to perform these underhood checks at each fuel ﬁll. Engine Oil Level Check Check the engine oil level and add the proper oil if necessary. See Engine Oil on page 5-13 for further details. Notice: and keep it at the proper level. Failure to keep your engine oil at the proper level can cause damage to your engine not covered by your warranty. It is important to check your oil regularly Engine Coolant Level Check Check the engine coolant level and add DEX-COOL® coolant mixture if necessary. See Engine Coolant on page 5-24 for further details. Windshield Washer Fluid Level Check Check the windshield washer ﬂuid level in the windshield washer tank and add the proper ﬂuid if necessary. At Least Once a Month Tire Inﬂation Check Visually inspect your tires and make sure tires are inﬂated to the correct pressures. Do not forget to check your spare tire. See Tires on page 5-54 for further details. Check to make sure the spare tire is stored securely. Push, pull and then try to turn the spare tire. If it moves, tighten it. See Changing a Flat Tire on page 5-70. 6-9 At Least Once a Year Starter Switch Check {CAUTION: When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before you start, be sure you have enough room around the vehicle. 2. Firmly apply both the parking brake and the regular brake. See Parking Brake on page 2-36 if necessary. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts. 3. Try to start the engine in each gear. The starter should work only in PARK (P) or NEUTRAL (N). If the starter works in any other position, contact your GM Goodwrench dealer for service. Automatic Transmission Shift Lock Control System Check {CAUTION: When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before you start, be sure you have enough room around the vehicle. It should be parked on a level surface. 2. Firmly apply the parking brake. See Parking Brake on page 2-36 if necessary. Be ready to apply the regular brake immediately if the vehicle begins to move. 3. With the engine off, turn the ignition to RUN, but do not start the engine. Without applying the regular brake, try to move the shift lever out of PARK (P) with normal effort. If the shift lever moves out of PARK (P), contact your GM Goodwrench dealer for service. 6-10 Ignition Transmission Lock Check While parked, and with the parking brake set, try to turn the ignition to LOCK in each shift lever position. The ignition should turn to LOCK only when the shift lever is in PARK (P). The key should come out only in LOCK. Contact your GM Goodwrench dealer if service is required. Parking Brake and Automatic Transmission Park (P) Mechanism Check {CAUTION: When you are doing this check, your vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of your vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move. Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake. To check the parking brake’s holding ability: With the engine running and transmission in NEUTRAL (N), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only. To check the PARK (P) mechanism’s holding ability: With the engine running, shift to PARK (P). Then release the parking brake followed by the regular brake. Contact your GM Goodwrench dealer if service is required. Underbody Flushing Service At least every spring, use plain water to ﬂush any corrosive materials from the underbody. Take care to clean thoroughly any areas where mud and other debris can collect. 6-11 (cid:127) (cid:127) (cid:127) (cid:127) Usage Fluid/Lubricant Windshield Washer Solvent GM Optikleen® Washer Solvent. Power Steering

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2005 Hummer H2 Owners Manual