2004 Hummer H2 Owners Manual

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it clockwise until it locks. 5-53 Sidemarker Lamps It is recommended that these components be replaced by your dealer. Daytime Running Lamps 1. Locate the lamp assembly behind the front bumper. It is easiest to come in from the side of the vehicle through the wheel opening. 2. Turn the bulb socket counterclockwise and remove it from the lamp housing. 3. Remove the bulb from the bulb socket. 4. Put the new bulb into the bulb socket. 5. Put the bulb socket into the lamp housing and turn it clockwise until it locks. 5-54 Roof Marker Lamps Corner Roof Marker Lamps 1. Remove the screw and lift off the lens. 2. Turn the socket counterclockwise to remove it and remove the old bulb. 3. Put a new bulb into the socket. 4. Reinstall the socket into the lens and turn it clockwise to lock it into place. 5. Hook the side of the lens with the hook end in the notch ﬁrst and then tighten the screw. 5-55 Center Roof Marker Lamps 1. Push in on the notch with a ﬂat tool and pull the lamp out. 2. Turn the bulb socket counterclockwise and remove it from the lamp housing. 3. Remove the bulb from the bulb socket. 4. Put the new bulb into the bulb socket. 5. Place the hook end of the lamp in place on one side and push the other end of the lamp down until it locks in place. 5-56 2. Remove the two screws from the rear lamp assembly and remove the rear lamp assembly. 3. Turn the bulb socket counterclockwise to remove it from the taillamp housing. Center High-Mounted Stoplamp (CHMSL) If your vehicle has this component and it needs replacement, it is recommended that it be replaced as a unit by your dealer. Taillamps A. Stoplamp B. Turn Signal Lamp C. Back-Up Lamp 1. Open the liftgate. 5-57 Replacement Bulbs Exterior Lamp Bulb Number Low-Beam and High-Beam Headlamps Daytime Running Lamps (DRL) Front Turn Signal and Parking Lamps Rear Taillamp and Stoplamp Rear Turn Lamp Back-up Lamp Roof Marker Lamps 9007 4114K 4157K or 3157KX 3157 3157 4157 or 3157 168 For replacement bulbs not listed here, please consult your dealer. 4. Pull the bulb straight out from the socket. 5. Press a new bulb into the socket, insert it into the taillamp housing and turn the socket counterclockwise until it is locked in place. 6. Reinstall the rear lamp assembly and tighten the screws. 5-58 Windshield Wiper Blade Replacement Windshield wiper blades should be inspected at least twice a year for wear and cracking. See Scheduled Maintenance on page 6-4 for more information. Replacement blades come in different types and are removed in different ways. For proper type and length, see Normal Maintenance Replacement Parts on page 6-14. To replace the windshield wiper blade assembly do the following: 1. Lift the wiper arm and turn the blade until it is facing away from the windshield. 2. Push the release lever and slide the wiper assembly toward the driver’s side of the vehicle. 3. Install a new blade by reversing Steps 1 and 2. 5-59 Tires Your new vehicle comes with high-quality tires made by a leading tire manufacturer. If you ever have questions about your tire warranty and where to obtain service, see your GM Warranty booklet for details. For additional information refer to the tire manufacturer’s booklet included with your vehicle’s Owner’s Manual. {CAUTION: Poorly maintained and improperly used tires are dangerous. (cid:127) Overloading your tires can cause overheating as a result of too much friction. You could have an air-out and a serious accident. See “Loading Your Vehicle” in the Index. CAUTION: (Continued) 5-60 CAUTION: (Continued) (cid:127) Underinﬂated tires pose the same danger as overloaded tires. The resulting accident could cause serious injury. Check all tires frequently to maintain the recommended pressure. Tire pressure should be checked when your tires are cold. (cid:127) Overinﬂated tires are more likely to be cut, punctured or broken by a sudden impact — such as when you hit a pothole. Keep tires at the recommended pressure. (cid:127) Worn, old tires can cause accidents. If your tread is badly worn, or if your tires have been damaged, replace them. Tire Sidewall Labeling Useful information about a tire is molded into the sidewall. The following illustrations are examples of a typical P-Metric and a LT-Metric tire sidewall. (A) Tire Size Code: The tire size code is a combination of letters and numbers used to deﬁne a particular tire’s width, height, aspect ratio, construction type and service description. See the “Tire Size Code” illustration later in this section for more detail. (B) Tire Performance Criteria Speciﬁcation (TPC Spec): Original equipment tires designed to GM’s speciﬁc tire performance criteria have a TPC speciﬁcation code molded onto the sidewall. GM’s TPC speciﬁcations meet or exceed all federal safety guidelines. (C) Department of Transportation (DOT): The Department of Transportation (DOT) code indicates that the tire is in compliance with the U.S. Department of Transportation Motor Vehicle Safety Standards. (D) Tire Identiﬁcation Number (TIN): The letters and numbers following DOT code are the Tire Identiﬁcation Number (TIN). The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture. (E) Tire Ply Material: The type of cord and number of plies in the sidewall and under the tread. P-Metric Tire 5-61 (F) Uniform Tire Quality Grading (UTQG): Tire manufacturers are required to grade tires based on three performance factors: treadwear, traction and temperature resistance. For more information, see Uniform Tire Quality Grading on page 5-72. (G) Maximum Cold Inﬂation Load Limit: Maximum load that can be carried and the maximum pressure needed to support that load. For information on recommended tire pressure see Inﬂation - Tire Pressure on page 5-68 and Loading Your Vehicle on page 4-67. 5-62 LT-Metric Tire (A) Tire Size: The tire size code is a combination of letters and numbers used to deﬁne a particular tire’s width, height, aspect ratio, construction type and service description. See the “Tire Size” illustration later in this section for more detail. (B) Tire Performance Criteria Speciﬁcation (TPC Spec): Original equipment tires designed to GM’s speciﬁc tire performance criteria have a TPC speciﬁcation code molded onto the sidewall. GM’s TPC speciﬁcations meet or exceed all federal safety guidelines. (C) Dual Tire Maximum Load: Maximum load that can be carried and the maximum pressure needed to support that load when used in a dual conﬁguration. For information on recommended tire pressure see Inﬂation - Tire Pressure on page 5-68 and Loading Your Vehicle on page 4-67. (D) Department of Transportation (DOT): The Department of Transportation (DOT) code indicates that the tire is in compliance with the U.S. Department of Transportation Motor Vehicle Safety Standards. (E) Tire Identiﬁcation Number (TIN): The letters and numbers following DOT code are the Tire Identiﬁcation Number (TIN). The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture. (F) Tire Ply Material: The type of cord and number of plies in the sidewall and under the tread. (G) Single Tire Maximum Load: Maximum load that can be carried and the maximum pressure needed to support that load when used as a single. For information on recommended tire pressure see Inﬂation - Tire Pressure on page 5-68 and Loading Your Vehicle on page 4-67. 5-63 (C) Aspect Ratio: A two-digit number that indicates the tire height-to-width measurements. For example, if the tire size aspect ratio is “75,” as shown in item “C” of the illustration, it would mean that the tire’s sidewall is 75% as high as it is wide. (D) Construction Code: A letter code is used to indicate the type of ply construction in the tire. The letter “R” means radial ply construction; the letter “D” means diagonal or bias ply construction; and the letter “B” means belted-bias ply construction. (E) Rim Diameter: Diameter of the wheel in inches. (F) Service Description: The service description indicates the load range and speed rating of a tire. The load index can range from 1 to 279. Speed ratings range from “A” to “Z”. Tire Size The following examples show the different parts of a tire size. Passenger (P-Metric) Tire (A) Passenger (P-Metric) Tire: The United States version of a metric tire sizing system. The letter “P” as the ﬁrst character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. Tire and Rim Association. (B) Tire Width: The three-digit number indicates the tire section width in millimeters from sidewall to sidewall. 5-64 Light Truck (LT-Metric) Tire (A) Light Truck (LT-Metric) Tire: The United States version of a metric tire sizing system. The letter “LT” as the ﬁrst two characters in the tire size means a light truck tire engineered to standards set by the U. S. Tire and Rim Association. (B) Tire Width: The three-digit number indicates the tire section width in millimeters from sidewall to sidewall. (C) Aspect Ratio: A two-digit number that indicates the tire height-to-width measurements. For example, if the tire size aspect ratio is “75,” as shown in item “C” of the illustration, it would mean that the tire’s sidewall is 75% as high as it is wide. (D) Construction Code: A letter code is used to indicate the type of ply construction in the tire. The letter “R” means radial ply construction; the letter “D” means diagonal or bias ply construction; and the letter “B” means belted-bias ply construction. (E) Rim Diameter: Diameter of the wheel in inches. (F) Service Description: The service description indicates the load range and speed rating of a tire. The load index can range from 1 to 279. Speed ratings range from “A” to “Z”. The light truck tire size example above shows dual or single tire conﬁgurations. Tire Terminology and Deﬁnitions Air Pressure: The amount of air inside the tire pressing outward on each square inch of the tire. Air pressure is expressed in pounds per square inch (psi) or kilopascal (kPa). Accessory Weight: This means the combined weight of optional accessories. Some examples of optional accessories are, automatic transmission, power steering, power brakes, power windows, power seats, and air conditioning. 5-65 Aspect Ratio: The relationship of a tire’s height to its width. GVWR: Gross Vehicle Weight Rating, see Loading Your Vehicle on page 4-67. Belt: A rubber coated layer of cords that is located between the plies and the tread. Cords may be made from steel or other reinforcing materials. Bead: The tire bead contains steel wires wrapped by steel cords that hold the tire onto the rim. Bias Ply Tire: A pneumatic tire in which the plies are laid at alternate angles less than 90 degrees to the centerline of the tread. Cold Inﬂation Pressure: The amount of air pressure in a tire, measured in pounds per square inch (psi) or kilopascals (kPa) before a tire has built up heat from driving. See Inﬂation - Tire Pressure on page 5-68. Curb Weight: This means the weight of a motor vehicle with standard and optional equipment including the maximum capacity of fuel, oil and coolant, but without passengers and cargo. DOT Markings: A code molded into the sidewall of a tire signifying that the tire is in compliance with the U.S. Department of Transportation motor vehicle safety standards. The DOT code includes the Tire Identiﬁcation Number (TIN), an alphanumeric designator which can also identify the tire manufacturer, production plant, brand and date of production. 5-66 GAWR FRT: Gross Axle Weight Rating for the front axle, see Loading Your Vehicle on page 4-67. GAWR RR: Gross Axle Weight Rating for the rear axle, see Loading Your Vehicle on page 4-67. Intended Outboard Sidewall: The side of an asymmetrical tire, that must always face outward when mounted on a vehicle. Kilopascal (kPa): The metric unit for air pressure. There are 6.9 kPa’s to one psi. Light Truck (LT-Metric) Tire: A tire used on light duty trucks and some multipurpose passenger vehicles. Load Index: An assigned number ranging from 1 to 279 that corresponds to the load carrying capacity of a tire. Maximum Inﬂation Pressure: The maximum air pressure to which a cold tire may be inﬂated. The maximum air pressure is molded onto the sidewall. Maximum Load Rating: The load rating for a tire at the maximum permissible inﬂation pressure for that tire. Maximum Loaded Vehicle Weight: The sum of curb weight; accessory weight; vehicle capacity weight; and production options weight. Normal Occupant Weight: The number of occupants a vehicle is designed to seat multiplied by 150 pounds (68 kg). See Loading Your Vehicle on page 4-67. Occupant Distribution: Designated seating positions. Outward Facing Sidewall: The side of a asymmetrical tire that has a particular side that faces outward when mounted on a vehicle. The side of the tire that contains a whitewall, bears white lettering or bears manufacturer, brand and or model name molding that is higher or deeper than the same moldings on the other sidewall of the tire. Passenger (P-Metric) Tire: A tire used on passenger cars and some light duty trucks and multipurpose vehicles. Recommended Inﬂation Pressure: Vehicle manufacturer’s recommended tire inﬂation pressure and shown on the tire placard. See Inﬂation - Tire Pressure on page 5-68 and Loading Your Vehicle on page 4-67. Radial Ply tire: A pneumatic tire in which the ply cords that extend to the beads are laid at 90 degrees to the centerline of the tread. Rim: A metal support for a tire and upon which the tire beads are seated. Sidewall: The portion of a tire between the tread and the bead. Speed Rating: An alphanumeric code assigned to a tire indicating the maximum speed at which a tire can operate. Traction: The friction between the tire and the road surface. The amount of grip provided. Tread: The portion of a tire that comes into contact with the road. Treadwear Indicators: Narrow bands, sometimes called “wear bars,” that show across the tread of a tire when only 2/32 inch of tread remains. See When It Is Time for New Tires on page 5-70. UTQGS: Uniform Tire Quality Grading Standards, a tire information system that provides consumers with ratings for a tire’s traction, temperature and treadwear. Ratings are determined by tire manufacturers using government testing procedures. The ratings are molded into the sidewall of the tire. See Uniform Tire Quality Grading on page 5-72. 5-67 Vehicle Capacity Weight: The number of designated seating positions multiplied by 150 lbs. (68 kg) plus the rated cargo load. See Loading Your Vehicle on page 4-67. Notice: Don’t let anyone tell you that underinﬂation or overinﬂation is all right. It’s not. If your tires don’t have enough air (underinﬂation), you can get the following: Vehicle Maximum Load on the Tire: Load on an individual tire due to curb weight, accessory weight, occupant weight and cargo weight. Vehicle Placard: A label permanently attached to a vehicle showing the original equipment tire size and recommended inﬂation pressure. See Loading Your Vehicle on page 4-67. Inﬂation - Tire Pressure The Certiﬁcation/Tire label or Tire and Loading Information label shows the correct inﬂation pressures for your tires when they’re cold. “Cold” means your vehicle has been sitting for at least three hours or driven no more than 1 mile (1.6 km). See Loading Your Vehicle on page 4-67. Too much ﬂexing Too much heat Tire overloading (cid:127) Bad wear (cid:127) Bad handling (cid:127) Bad fuel economy If your tires have too much air (overinﬂation), you can get the following: (cid:127) Unusual wear (cid:127) Bad handling (cid:127) Rough ride (cid:127) Needless damage from road hazards 5-68 (cid:127) (cid:127) (cid:127) Tire Inspection and Rotation Tires should be rotated every 5,000 to 8,000 miles (8 000 to 13 000 km). Any time you notice unusual wear, rotate your tires as soon as possible and check wheel alignment. Also check for damaged tires or wheels. See When It Is Time for New Tires on page 5-70 and Wheel Replacement on page 5-74 for more information. The purpose of regular rotation is to achieve more uniform wear for all tires on the vehicle. The ﬁrst rotation is the most important. See Scheduled Maintenance on page 6-4, for scheduled rotation intervals. When to Check Check your tires once a month or more. Also, check the tire pressure of the spare tire. How to Check Use a good quality pocket-type gage to check tire pressure. You can’t tell if your tires are properly inﬂated simply by looking at them. Radial tires may look properly inﬂated even when they’re underinﬂated. Remove the valve cap from the tire valve stem. Press the tire gage ﬁrmly onto the valve to get a pressure measurement. If the cold tire inﬂation pressure is low, add air until you reach the recommended amount. If you overﬁll the tire, release air by pushing on the metal stem in the center of the tire valve. Recheck the tire pressure with the tire gage. Be sure to put the valve caps back on the valve stems. They help prevent leaks by keeping out dirt and moisture. When rotating your tires, always use the correct rotation pattern shown here. 5-69 When It Is Time for New Tires One way to tell when it’s time for new tires is to check the treadwear indicators, which will appear when your tires have only 1/16 inch (1.6 mm) or less of tread remaining. Some commercial truck tires may not have treadwear indicators. After the tires have been rotated, adjust the front and rear inﬂation pressures as shown on the Certiﬁcation/Tire label or Tire and Loading Information label. See Loading Your Vehicle on page 4-67. Make certain that all wheel nuts are properly tightened. See “Wheel Nut Torque” under Capacities and Speciﬁcations on page 5-111. {CAUTION: Rust or dirt on a wheel, or on the parts to which it is fastened, can make 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 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. See “Changing a Flat Tire” in the Index. 5-70 ride and other things during normal service on your vehicle. If your tires have an all-season tread design, the TPC number will be followed by an “MS” (for mud and snow). If you ever replace your tires with those not having a TPC Spec number, make sure they are the same size, load range, speed rating and construction type (bias, bias-belted or radial) as your original tires. {CAUTION: Mixing tires could cause you to lose control while driving. If you mix tires of different sizes or types (radial and bias-belted tires) the vehicle may not handle properly, and you could have a crash. Using tires of different sizes may also cause damage to your vehicle. Be sure to use the same size and type tires on all wheels. You need a new tire if any of the following statements are true: (cid:127) You can see the indicators at three or more places around the tire. (cid:127) You can see cord or fabric showing through the tire’s rubber. The tread or sidewall is cracked, cut or snagged deep enough to show cord or fabric. The tire has a bump, bulge or split. The tire has a puncture, cut or other damage that can’t be repaired well because of the size or location of the damage. Buying New Tires To ﬁnd out what kind and size of tires you need, look at the Certiﬁcation/Tire label or the Tire and Loading Information label. For examples of these labels and their location on your vehicle, see Loading Your Vehicle on page 4-67. The tires installed on your vehicle when it was new had a Tire Performance Criteria Speciﬁcation (TPC Spec) number on each tire’s sidewall. When you get new tires, General Motors recommends that you get tires with that same TPC Spec number. That way your vehicle will continue to have tires that are designed to give proper endurance, handling, speed rating, load range, traction, 5-71 (cid:127) (cid:127) (cid:127) snow tires, space-saver or temporary use spare tires, tires with nominal rim diameters of 10 to 12 inches (25 to 30 cm), or to some limited-production tires. While the tires available on General Motors passenger cars and light trucks may vary with respect to these grades, they must also conform to federal safety requirements and additional General Motors Tire Performance Criteria (TPC) standards. Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a speciﬁed government test course. For example, a tire graded 150 would wear one and a half (1.5) times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart signiﬁcantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate. {CAUTION: If you use bias-ply tires on your vehicle, the wheel rim ﬂanges could develop cracks after many miles of driving. A tire and/or wheel could fail suddenly, causing a crash. Use only radial-ply tires with the wheels on your vehicle. Uniform Tire Quality Grading Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example: Treadwear 200 Traction AA Temperature A The following information relates to the system developed by the United States National Highway Traffic Safety Administration, which grades tires by treadwear, traction and temperature performance. (This applies only to vehicles sold in the United States.) The grades are molded on the sidewalls of most passenger car tires. The Uniform Tire Quality Grading system does not apply to deep tread, winter-type 5-72 Traction – AA, A, B, C The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire’s ability to stop on wet pavement as measured under controlled conditions on speciﬁed government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance. Warning: The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics. Temperature – A, B, C The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a speciﬁed indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law. Warning: The temperature grade for this tire is established for a tire that is properly inﬂated and not overloaded. Excessive speed, underinﬂation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure. Wheel Alignment and Tire Balance The wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance. Scheduled wheel alignment and wheel balancing are not needed. However, if you notice unusual tire wear or your vehicle pulling one way or the other, the alignment may need to be reset. If you notice your vehicle vibrating when driving on a smooth road, your wheels may need to be rebalanced. 5-73 Wheel Replacement Replace any wheel that is bent, cracked or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts and wheel nuts should be replaced. If the wheel leaks air, replace it (except some aluminum wheels, which can sometimes be repaired). See your dealer if any of these conditions exist. Your dealer will know the kind of wheel you need. Each new wheel should have the same load-carrying capacity, diameter, width, offset and be mounted the same way as the one it replaces. If you need to replace any of your wheels, wheel bolts or wheel nuts, replace them only with new GM original equipment parts. This way, you will be sure to have the right wheel, wheel bolts and wheel nuts for your vehicle. {CAUTION: Using the wrong replacement wheels, wheel bolts or wheel nuts on your vehicle can be dangerous. It could affect the braking and handling of your vehicle, make your tires lose air and make you lose control. You could have a collision in which you or others could be injured. Always use the correct wheel, wheel bolts and wheel nuts for replacement. Notice: The wrong wheel can also cause problems with bearing life, brake cooling, speedometer or odometer calibration, headlamp aim, bumper height, vehicle ground clearance and tire or tire chain clearance to the body and chassis. See Changing a Flat Tire on page 5-79 for more information. 5-74 Used Replacement Wheels {CAUTION: Putting a used wheel on your vehicle is dangerous. You can’t know how it’s been used or how far it’s been driven. It could fail suddenly and cause a crash. If you have to replace a wheel, use a new GM original equipment wheel. Tire Chains Notice: Use tire chains only where legal and only when you must. Use only SAE Class ″S″ type chains that are the proper size for your tires. Install them on the rear axle tires and tighten them as tightly as possible with the ends securely fastened. Drive slowly and follow the chain manufacturer’s instructions. If you can hear the chains contacting your vehicle, stop and retighten them. If the contact continues, slow down until it stops. Driving too fast or spinning the wheels with chains on will damage your vehicle. 5-75 Accessory Inﬂator Your vehicle may be equipped with an accessory inﬂator system. You can inﬂate things like basketballs and bicycle tires. Also, you can use it to bring your tire pressure up to the proper pressure. The engine must be running and the gearshift lever must be in PARK (P) for the inﬂator to operate. The accessory inﬂator is located in the rear compartment on the passenger’s side of the vehicle. The accessory inﬂator kit is located in the spare tire cover pocket. The kit includes a hose and three nozzle adapters. To use the accessory inﬂator, attach the appropriate nozzle adapter to the end of the hose if required. Then attach that end of the hose to the object you wish to inﬂate. Remove the dust cover and attach the hose to the outlet. 5-76 The accessory inﬂator hose also has a built-in air pressure gage. As soon as you start to inﬂate an object it will automatically read the current pressure. Press and release the switch to turn the accessory inﬂator on. The indicator light will remain on while the inﬂator is running. Press and release the switch to turn the inﬂator off. Place the inﬂator kit tools and the hose in the pouch and store it back in the spare tire cover pocket. If your vehicle is equipped with the air suspension system, load leveling will not function with the inﬂator hose attached to the inﬂator outlet. {CAUTION: Inﬂating something too much can make it explode, and you or others could be injured. Be sure to read the inﬂator instructions, and inﬂate any object only to its recommended pressure. 5-77 If a Tire Goes Flat It’s unusual for a tire to “blowout” while you’re driving, especially if you maintain your tires properly. If air goes out of a tire, it’s much more likely to leak out slowly. But if you should ever have a “blowout,” here are a few tips about what to expect and what to do: If a front tire fails, the ﬂat tire will create a drag that pulls the vehicle toward that side. Take your foot off the accelerator pedal and grip the steering wheel ﬁrmly. Steer to maintain lane position, and then gently brake to a stop well out of the traffic lane. A rear blowout, particularly on a curve, acts much like a skid and may require the same correction you’d use 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. 5-78 CAUTION: (Continued) 4. Do not allow passengers to remain in the vehicle. 5. Put the wheel 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. 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). 3. Turn off the engine and do not restart while the vehicle is raised. CAUTION: (Continued) 5-79 Open the tool bag and you will ﬁnd the following tools which you will use to remove the spare tire and ﬂat tire: The following steps will tell you how to use the jack and change a tire. Removing the Spare Tire and Tools 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 1-8. 2. Turn the wingnut (A), which holds the jack, counterclockwise to release the jack. 3. Turn the wingnut (B), which holds the jack tool kit, counterclockwise to release it. 5-80 A. Jack Handle Extension (Used for Rear Flats Only) B. Jack Handle C. Wheel Wrench D. Ratchet E. Spanner Wrench F. Locking Pin (If Equipped) Not used for tire changing procedure. See “Power Winch Platform” under If You Are Stuck: In Sand, Mud, Ice or Snow on page 4-56. The spare tire and wheel blocks are stored in the rear cargo area. Remove the tire cover to get to them. Follow the instructions to remove the wheel blocks and spare tire: 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 4-56. 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. 5-81 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. Use the art and text following to ﬁnish changing a ﬂat tire. The tools you’ll be using include the jack (A), the wheel blocks (B), the wheel wrench (C), jack handle extension (D), the jack handle (E) and the ratchet (F). Before proceeding, be sure to set the wheel blocks (B) on the appropriate tire as shown previously. 5-82 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. 4. Assemble the jack and tools as follows: Front Flat Tire: Attach the jack handle (E) with the hook end connected to the u-hook/clevis on the jack (A). Slide the ratchet (F) onto the jack handle (E) with the UP mark facing you. 5-83 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. Rear Flat Tire: Attach the jack handle extension (D) to the jack handle (E) and then press the clip (arrow) so it engages. Then attach the jack handle (E) with the hook end connected to the u-hook/clevis on the jack (A). Slide the ratchet (F) onto the jack handle extension (D) with the UP mark facing you. 5. Turn the ratchet (F) clockwise to raise the jack head to the lifting point. Front Position 5-84 X= 28.5 inches (72.0 cm) 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 Position {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. 5-85 7. Remove all the wheel nuts and take off the ﬂat tire. {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. 5-86 8. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. {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. {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. 5-87 9. After mounting the spare, put the wheel nuts back on with the rounded end of the nuts toward the wheel. 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. Front Position Rear Position 10. Lower the vehicle by turning the ratchet counterclockwise, with the DOWN mark facing you. Lower the jack completely. 5-88 11. Tighten the nuts ﬁrmly in a crisscross sequence as shown by turning the ratchet clockwise, with the UP mark facing you. {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” in the Index for wheel nut torque speciﬁcation. Improperly tightened wheel nuts can lead to Notice: 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” in the index for the wheel nut torque speciﬁcation. 12. 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. 5-89 Storing a Flat or Spare Tire and Tools Use the art and text following to help you store the ﬂat or spare tire and tools back in their proper spot when you are done. Store the ﬂat or spare tire back inside the vehicle on the spare tire mount. 1. Slide the ﬂat or spare tire (A) onto the tire carrier. 2. Slide the tire retainer plate (C) 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 (D) by hand until the tire retainer plate (C) is snug against the wheel. A. Spare or Flat Tire B. Receiver Extension (If Equipped) C. Tire Retainer Plate D. Nut E. Wheel Blocks 5-90 Then use the ratchet and spanner to tighten the nut ﬁrmly. Try to move the tire back and forth slightly to be sure it is secure. 3. Tighten the wingnut (A) until the jack is securely fastened. 4. Reattach the wheel blocks (E) to the tire retainer plate (C) and tighten the wing nut. 5. Reinstall the tire cover onto the spare or ﬂat tire. Follow these instructions to store the jack and tools: 1. Lower the jack completely. 2. Place the jack in the mounting bracket. 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. 5-91 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 5-68 and Loading Your Vehicle on page 4-67 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 5-79. 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. Appearance Care Remember, cleaning products can be hazardous. Some are toxic. Others can burst into ﬂames if you strike a match or get them on a hot part of the vehicle. Some are dangerous if you breathe their fumes in a closed space. When you use anything from a container to clean your vehicle, be sure to follow the manufacturer’s warnings and instructions. And always open your doors or windows when you are cleaning the inside. Never use these to clean your 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 your vehicle, too. 5-92 (cid:127) (cid:127) Do not use any of these unless this manual says you can. In many uses, these will damage your vehicle: (cid:127) Alcohol Laundry Soap (cid:127) Bleach (cid:127) Reducing Agents Cleaning the Inside of Your Vehicle 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. Cleaning Fabric/Carpet Your dealer has cleaners for the cleaning of fabric and carpet. They will clean normal spots and stains very well. You and get GM-approved cleaning products from your dealer. See Vehicle Care/Appearance Materials on page 5-100. 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. If a ring forms on fabric after spot cleaning, clean the entire area immediately or it will set. Cleaning Vinyl Use warm water and a clean cloth. (cid:127) Rub with a clean, damp cloth to remove dirt. You may have to do this more than once. Things like tar, asphalt and shoe polish will stain if you don’t get them off quickly. Use a clean cloth and vinyl cleaner. See your dealer for this product. Cleaning 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. 5-93 (cid:127) (cid:127) (cid:127) (cid:127) Cleaning the Top of the 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. Cleaning Interior Plastic Components Use on a mild soap and water solution on a soft cloth or sponge. Commercial cleaners may affect the surface ﬁnish. Cleaning Wood Panels Use a clean cloth moistened in warm, soapy water (use mild dish washing soap). Dry the wood immediately with a clean cloth. Cleaning the Speaker Covers Vacuum around a speaker cover gently, so that the speaker won’t be damaged. Clean spots with just water and mild soap. Cleaning 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 5-94 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 at least every six months. During very cold, damp weather more frequent application may be required. See Recommended Fluids and Lubricants on page 6-12. Cleaning the Outside of Your Vehicle The paint ﬁnish on your vehicle provides beauty, depth of color, gloss retention and durability. Washing Your Vehicle The best way to preserve your vehicle’s ﬁnish is to keep it clean by washing it often with lukewarm or cold water. Don’t wash your vehicle in the direct rays of the sun. Use a car washing soap. Don’t use strong soaps or chemical detergents. Be sure to rinse the vehicle well, removing all soap residue completely. You can get GM-approved cleaning products from your dealer. See Vehicle Care/Appearance Materials on page 5-100. Don’t 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 your vehicle. 5-95 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.” Finish Care Occasional waxing or mild polishing of your vehicle by hand may be necessary to remove residue from the paint ﬁnish. You can get GM-approved cleaning products from your dealer. See Vehicle Care/Appearance Materials on page 5-100. If your 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. 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, roof basket, etc., it might not ﬁt properly in a standard car wash. 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 Cleaning the Outside of Your Vehicle on page 5-95 for more information. Also, see Luggage Carrier on page 2-46 and “Off-Road Lamps” under Exterior Lamps on page 3-13. If you drive your vehicle through an 5-96 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 your 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. You can help to keep the paint ﬁnish looking new by keeping your vehicle garaged or covered whenever possible. Protecting Exterior Bright Metal Parts Bright metal parts should be cleaned regularly to keep their luster. Washing with water is all that is usually needed. However, you may use chrome polish on chrome or stainless steel trim, if necessary. Use special care with aluminum trim. To avoid damaging protective trim, never use auto or chrome polish, steam or caustic soap to clean aluminum. A coating of wax, rubbed to high polish, is recommended for all bright metal parts. Cleaning the 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. 5-97 Cleaning Aluminum or Chrome-Plated Wheels Your vehicle will have either aluminum or chrome-plated wheels. Keep your 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 your vehicle. Do not use strong soaps, chemicals, abrasive polishes, abrasive cleaners, cleaners with acid, or abrasive cleaning brushes on them because you could damage the surface. Do not use chrome polish on aluminum wheels. Use chrome polish only on chrome-plated wheels but avoid any painted surface of the wheel, and buff off immediately after application. Do not take your vehicle through an automatic car wash that has silicone carbide tire cleaning brushes. These brushes can also damage the surface of these wheels. Cleaning Tires To clean your 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 your 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. 5-98 Chemical Paint Spotting Some weather and atmospheric conditions can create a chemical fallout. Airborne pollutants can fall upon and attack painted surfaces on your 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. 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 avaliable from your dealer. Larger areas of ﬁnish damage can be corrected in your 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 dealer or an underbody car washing system can do this for you. 5-99 Vehicle Care/Appearance Materials See your GM dealer for more information on purchasing the following products. Description 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 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 wipe off. 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 easy step, no wiping necessary. Medium foaming shampoo. Cleans and lightly waxes. Biodegradable and phosphate free. Quickly and easily 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) Service Parts Identiﬁcation Label You’ll ﬁnd this label located in the glove box. It’s very helpful if you ever need to order parts. On this label is: 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. your VIN, the model designation, paint information and a list of all production options and special equipment. Be sure that this label is not removed from the vehicle. 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 air bag system. Before attempting to add anything electrical to your vehicle, see Servicing Your Air Bag-Equipped Vehicle on page 1-72. 5-101 (cid:127) (cid:127) (cid:127) (cid:127) 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. 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. 5-102 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. Fuses RR Wiper SEO ACCY WS WPR TBC ACCY IGN 3 4WD Usage Rear Window Wiper Switch Special Equipment Option Accessory Windshield Wipers Truck Body Controller Accessory Rear Heated Seats Module Four-Wheel Drive Switch, Air Suspension Switch/Module 5-103 Usage 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) Not Used Brake Switch Power Door Lock Relay (Driver’s Door Unlock Function) Brake Transmission Shift Interlock, Powertrain Control Module, Transmission Truck Body Controller Vehicle and Trailer High Mounted Stoplamp Left Turn Signal/Stop Trailer Left Turn Signals and Sidemarkers Fuses HTR A/C LOCK HVAC 1 L DOOR CRUISE UNLOCK RR FOG LP BRAKE DRIVER UNLOCK IGN 0 TBC IGN 0 VEH CHMSL LT TRLR ST/TRN LT TRN 5-104 Fuses VEH STOP RT TRLR ST/TRN RT TRN BODY DDM AUX PWR 2 LOCKS ECC TBC 2C FLASH CB LT DOORS TBC 2B TBC 2A Usage Vehicle Stoplamps, Brake Module, Electronic Throttle Control Module Right Turn Signal/Stop Trailer Right Turn Signals and Sidemarkers Harness Connector Driver Door Module Instrument Panel Outlets, Rear Cargo Area Power Outlets 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 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 5-105 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. 5-106 5-107 Usage Not Used Gasoline Accessory Power 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 STARTER INTPARK STOP LP TBC BATT SUNROOF SEO B2 4WS RR HVAC AUX PWR 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 Auxiliary Power Outlet — Console Fuses GLOW PLUG CUST FEED STUD #1 MBEC 1 BLOWER LBEC 2 STUD #2 ABS VSES/ECAS IGN A IGN B 5-108 Fuses IGN 1 PCM 1 ETC/ECM INJ 1 INJ 2 IGN E RTD TRL B/U PCM B F/PMP 02A B/U LP Usage 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) Oxygen Sensors Back-up Lamps, Automatic Transmission Shift Lock Control System Fuses RR DEFOG HDLP-HI PRIME O2B SIR FRT PARK DRL SEO IGN TBC IGN1 HI HDLP-LT LH HID DRL IPC/DIC HVAC/ECAS CIG LTR Usage 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 Instrument Panel Cluster/Driver Information Center Climate Control Controller/Electronically Controlled Air Suspension Cigarette Lighter 5-109 Fuses HI HDLP-RT HDLP-LOW A/C COMP A/C COMP RR WPR RADIO SEO B1 LO HDLP-LT BTSI CRANK LO HDLP-RT Usage High Beam Headlamp-Right Headlamp Low Beam Relay Air Conditioning Compressor Relay Air Conditioning Compressor Rear Wiper/Washer Audio System Mid Bussed Electrical Center, HomeLink, Rear Heated Seats Headlamp Low Beam-Left Brake Transmission Shift Interlock System Starting System Headlamp Low Beam-Right Fuses FOG LP FOG LP HORN W/S WASH W/S WASH INFO RADIO AMP RH HID HORN EAP TREC SBA Usage Not Used Not Used Horn Relay Windshield and Rear Window Washer Pump Relay Windshield and Rear Window Washer Pump OnStar Radio Ampliﬁer Not Used Horn Not Used All-Wheel Drive Module Not Used 5-110 Capacities and Speciﬁcations Please refer to Recommended Fluids and Lubricants on page 6-12 for more information. All capacities are approximate. Engine Speciﬁcations Engine VORTEC™ 6000 V8 VIN Code Spark Plug Gap 0.040 inches (1.01 mm) Capacities and Speciﬁcations Capacities Application English Cooling System After reﬁll, the level must be rechecked. See Cooling System on page 5-30. 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 5-14. Fuel Tank Air Conditioning Refrigerant R-134a 121.0 L 0.7 kg 32.0 gallons 13.0 quarts 6.0 quarts 1.6 lbs. 5.7 L Metric 12.7 L Application Wheel Nuts Tire Pressure Wheels and Tires Description 8 bolts (14 mm) Torque 140 lb ft (190 Y) See the Certiﬁcation/Tire label on the rear edge of the driver’s door. 5-111 ✍ NOTES 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 ...................................6-8 Owner Checks and Services ............................6-9 At Each Fuel Fill ............................................6-9 At Least Once a Month .................................6-10 At Least Once a Year ...................................6-10 Recommended Fluids and Lubricants ...............6-12 Normal Maintenance Replacement Parts ..........6-14 Engine Drive Belt Routing ..............................6-15 Maintenance Record .....................................6-16 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 4-67. are driven on reasonable road surfaces within legal driving limits. are driven off-road in the recommended manner. See Off-Road Driving on page 4-17. 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 6-8 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. 6-3 (cid:127) (cid:127) (cid:127) (cid:127) 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. 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

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