2005 Cadillac CTS Owners Manual

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(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. (C) Aspect Ratio: A two-digit number that indicates the tire height-to-width measurements. For example, if the tire size aspect ratio is 60, as shown in item C of the illustration, it would mean that the tire’s sidewall is 60 percent as high as it is wide. 5-58 (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: These characters represent the load range and speed rating of the tire. The load index represents the load carry capacity a tire is certiﬁed to carry. The load index can range from 1 to 279. The speed rating is the maximum speed a tire is certiﬁed to carry a load. Speed ratings range from A to Z. 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. Aspect Ratio: The relationship of a tire’s height to its width. 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-TirePressureonpage5-62. 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 (DOT) 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. GVWR: Gross Vehicle Weight Rating, see Loading Your Vehicle on page4-33. GAWR FRT: Gross Axle Weight Rating for the front axle, see Loading Your Vehicle on page4-33. GAWR RR: Gross Axle Weight Rating for the rear axle, see Loading Your Vehicle on page4-33. 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. 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 lbs (68 kg). See Loading Your Vehicle on page4-33. 5-59 Occupant Distribution: Designated seating positions. Outward Facing Sidewall: The side of an 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-TirePressure onpage5-62 and LoadingYourVehicleonpage4-33. 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. 5-60 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 1/16 inch (1.6 mm) of tread remains. See When It Is Time for New Tires on page5-69. 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 page5-71. Vehicle Capacity Weight: The number of designated seating positions multiplied by 150 lbs (68 kg) plus the rated cargo load. See LoadingYourVehicle on page4-33. 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 page4-33. Run-Flat Tires (CTS-V) If your vehicle has run-ﬂat tires, there is no spare tire and no tire changing equipment. Your vehicle also has a Tire Pressure Monitor (TPM) which will alert you if there is a loss of tire pressure in any of the tires. See TirePressureMonitorSystem(CTS-V)onpage5-65. {CAUTION: When the low tire warning light is displayed on the instrument panel cluster, your vehicle’s handling capabilities will be reduced during severe maneuvers. If you drive too fast, you could lose control of your vehicle. You or others could be injured. Don’t drive over 55 mph (90 km/h) when the low tire warning light is displayed. Drive cautiously and check your tire pressures as soon as you can. If a tire goes ﬂat, you won’t need to stop on the side of the road to change the tire. You can just keep on driving. The tire can operate effectively with no air pressure for up to 65 miles (105 km) at speeds up to 55 mph (90 km/h). The shorter the distance you drive and the slower the speed, the greater the chance that the tire will not have to be replaced. When a tire is ﬁlled with air, it provides a cushion between the road and the wheel. Because you won’t have this cushion when driving on a deﬂated run-ﬂat tire, try to avoid potholes that could damage your wheel and require replacement of it. Some road hazards can damage a tire beyond repair. This damage could occur even before you’ve driven on the tire in a deﬂated condition. When a tire has been damaged, or if you’ve driven any distance on a run-ﬂat tire, check with an authorized run-ﬂat tire service center to determine whether the tire can be repaired or should be replaced. To maintain your vehicle’s run-ﬂat feature, all replacement tires must be self-supporting tires. As soon as possible, contact the nearest authorized GM or run-ﬂat servicing facility for inspection and repair or replacement. 5-61 To locate the nearest GM or run-ﬂat servicing facility, call Roadside Service. See RoadsideServiceon page7-6 for details. {CAUTION: Run-ﬂat tires are constructed differently than other tires and could explode during improper service. You or others could be injured or killed if you attempt to repair, replace, dismount, or mount a run-ﬂat tire. Let only an authorized run-ﬂat service center repair, replace, dismount and mount run-ﬂat tires. The valve stems on your run-ﬂat tires have sensors that are part of the Tire Pressure Monitor System (TPMS). These sensors contain batteries which are designed to last for 10 years under normal driving conditions. See your dealer if you ever need to have a wheel replaced, or if the sensors ever need replacement. Notice: Using liquid sealants can damage the tire valves and tire pressure monitor sensors in your run-ﬂat tires. This damage would not be covered by warranty. Don’t use liquid sealants in your run-ﬂat tires. 5-62 Inﬂation - Tire Pressure Tires need the correct amount of air pressure to operate effectively. Notice: Do not let anyone tell you that under-inﬂation or over-inﬂation is all right. It is not. If your tires do not have enough air (under-inﬂation), you can get the following: • Too much ﬂexing • Too much heat • Tire overloading • Premature or irregular wear • Poor handling • Reduced fuel economy If your tires have too much air (over-inﬂation), you can get the following: • Unusual wear • Poor handling • Rough ride • Needless damage from road hazards A Tire and Loading Information label is attached to the vehicle’s center pillar, below the driver’s door latch. This label lists your vehicle’s original equipment tires and shows the correct inﬂation pressures for your tires when they are cold. The recommended cold tire inﬂation pressure, shown on the label, is the minimum amount of air pressure needed to support your vehicle’s maximum load carrying capacity. For additional information regarding how much weight your vehicle can carry, and an example of the tire and loading information label, see LoadingYourVehicle onpage4-33. How you load your vehicle affects vehicle handling and ride comfort, never load your vehicle with more weight than it was designed to carry. When to Check Check your tires once a month or more. Do not forget to check the compact spare tire, if your vehicle has one. The compact spare should be at 60 psi (420 kPa). For additional information regarding the compact spare tire, see Compact Spare Tire on page5-87. 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. Check the tire’s inﬂation pressure when the tires are cold. Cold means your vehicle has been sitting for at least three hours or driven no more than 1 mile (1.6 km). 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 matches the recommended pressure on the Tire and Loading Information label, no further adjustment is necessary. If the 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. Re-check 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. 5-63 Use the following chart to determine the cold tire inﬂation pressure when operating your vehicle under these conditions. Tire Size: 245/45R18 96W Recommended Cold Tire Inﬂation Pressure for High Speed Operation at 130 mph (209 km/h) or more: Occupant and Cargo Weight: Less than 600 lbs (272 kg) Occupant and Cargo Weight: 600 lbs (272 kg) Up to 882 lbs (400 kg) (Vehicle Capacity Weight) Front Tires Rear Tires Front Tires Rear Tires 30 psi (210 kPa) 30 psi (210 kPa) 32 psi (220 kPa) 34 psi (235 kPa) When you end high-speed driving, return the tires to the cold inﬂation pressures shown on the tire and loading information label. See LoadingYourVehicle on page4-33. High Speed Operation (CTS-V) {CAUTION: Driving at high speeds, 100 mph (160 km/h) or higher, puts an additional strain on tires. Sustained high-speed driving, causes excessive heat build up and can cause sudden tire failure. You could have a crash and you or others could be killed. Some high-speed rated tires require inﬂation pressure adjustment for high speed operation. When speed limits and road conditions are such, that a vehicle can be driven at high speeds, make sure the tires are rated for high speed operation, in excellent condition and set to the correct cold tire inﬂation pressure for the vehicle load. The CTS-V performance series has 245/45R18 96W size tires. These high-performance tires require inﬂation pressure adjustment when driving your vehicle at speeds of 130 mph (209 km/h) or higher with occupants and cargo weighing 600 lbs. (272 kg) up to 882 lbs. (400 kg). 5-64 Tire Pressure Monitor System (CTS-V) The Tire Pressure Monitor (TPM) System uses radio and sensor technology to check tire pressure levels. If your vehicle has this feature, sensors are mounted on each run-ﬂat tire and wheel assembly. The TPM sensors transmit tire pressure readings to a receiver located in the vehicle once every 60 seconds while the vehicle is being driven, and once every 60 minutes if the vehicle is stationary for more than 15 minutes. Using the Message Center, tire pressure levels can be viewed by the driver. For additional information about the message center operation and displays, see Message Center (CTS-V) on page3-52. When a low tire pressure condition is detected, a low tire warning light, on the instrument panel cluster, comes on to warn the driver. When the tire pressure monitoring system warning light is lit, one or more of your tires is signiﬁcantly under-inﬂated. You should stop and check your tires as soon as possible, and inﬂate them to the proper pressure as indicated on the vehicle’s tire information placard. Driving on a signiﬁcantly under-inﬂated tire causes the tire to overheat and can lead to tire failure. Under-inﬂation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. Each tire, should be checked monthly when cold and set to the recommended inﬂation pressure as speciﬁed in the vehicle placard and owner’s manual. The Tire and Loading Information label (tire information placard) is attached, to either, the center pillar near the driver’s door latch post or on the rear edge of the driver’s side rear passenger door. The label shows the size of your vehicle’s original tires and the correct inﬂation pressure for your vehicle’s tires when they are cold. See Inﬂation-TirePressureonpage5-62 and LoadingYourVehicleonpage4-33 for additional information. 5-65 Your vehicle’s TPM system can alert you about a low tire pressure condition but it does not replace normal tire maintenance. See TireInspectionandRotationon page5-68 and Tires on page5-54. Notice: Do not use a tire sealant if your vehicle is equipped with Tire Pressure Monitors. The liquid sealant can damage the tire pressure monitor sensors. TPM Sensor Identiﬁcation Codes Each TPM sensor has a unique identiﬁcation code. Any time you replace one or more of the TPM sensors, the identiﬁcation codes will need to be matched to the new tire/wheel position. Each tire/wheel position is matched, to a sensor, by increasing or decreasing the tire’s air pressure. The sensors are matched, to the tire/wheel positions, in the following order: left front (LF), right front (RF), right rear (RR), and left rear (LR). You will have one minute to match the ﬁrst tire/wheel position, and ﬁve minutes overall, to match all four tire/wheel positions. If it takes longer than one minute, to match the ﬁrst tire and wheel, or more than ﬁve minutes to match all four tire and wheel positions the matching process stops and you will need to start over. The TPM matching process is outlined below: 1. Set the Parking brake. 2. Turn the ignition switch to ON with the engine off. 3. Using the Remote Keyless Entry (RKE) transmitter, lock and unlock the vehicle’s doors. 4. Press the lock and unlock buttons, at the same time, on the RKE transmitter. A single horn chirp will sound, indicating that the TPM system is ready, and the sensor matching process can begin. 5. Start with the left (driver’s side) front tire. 6. Remove the valve cap from the valve stem. Activate the TPM sensor by increasing or decreasing the tire’s air pressure for ﬁve seconds, or until a horn chirp sounds. The horn chirp, which may take up to 30 seconds, conﬁrms that the sensor identiﬁcation code has been matched to this tire position. To decrease the tire’s air-pressure use the pointy end of the valve cap, a pencil-style air pressure gage or a key. 7. Proceed to the right (passenger’s side) front tire, and repeat the procedure in Step 6. 8. Proceed to the right (passenger’s side) rear tire, and repeat the procedure in Step 6. 5-66 9. Proceed to the left (driver’s side) rear tire, and repeat the procedure in Step 6. 10. After hearing the conﬁrming double horn chirp, for the left rear tire, exit the matching process by turning the ignition switch to OFF. 11. Set all four tires to the recommended air pressure level as indicated on the tire and loading information label. 12. Put the valve caps back on the valve stems. The TPM system will not function properly if one or more of the TPM sensors are missing or inoperable. If the system detects a missing or inoperable sensor an error message of several dashes – – – will be shown on the message center display. If you have replaced a tire/wheel assembly without transferring the TPM sensors, the error message will be displayed. Once you re-install the TPM sensors, the error message should go off. See your GM dealer for service if all TPM sensors are installed and the error message comes on and stays on. The TPM system operates on a radio frequency subject to Federal Communications Commission (FCC) Rules and with Industry and Science Canada. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. this device may not cause interference, and 2. this device must accept any interference received, including interference that may cause undesired operation. This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: 1. this device may not cause interference, and 2. this device must accept any interference received, including interference that may cause undesired operation of the device. Changes or modiﬁcations to this system by other than an authorized service facility could void authorization to use this equipment. 5-67 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 WhenItIsTime forNewTiresonpage5-69 and WheelReplacement on page5-73 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 ScheduledMaintenance on page6-4. If your vehicle has a compact spare tire, do not include it in the tire rotation. After the tires have been rotated, adjust the front and rear inﬂation pressures as shown on the Tire and Loading Information label. See LoadingYourVehicleon page4-33, for an example of the tire and loading information label and its location on your vehicle. If your vehicle has run-ﬂat tires, the Tire Pressure Monitor (TPM) system will need to have the sensors reset after a tire rotation is performed. A special tool is needed to reset the sensor identiﬁcation codes. See your dealer for service. Make certain that all wheel nuts are properly tightened. See “Wheel Nut Torque” under Capacitiesand Speciﬁcations on page5-108. When rotating your tires, always use the correct rotation pattern shown here. 5-68 {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 Changinga FlatTireonpage5-76. 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. You need a new tire if any of the following statements are true: • You can see the indicators at three or more places • You can see cord or fabric showing through the around the tire. 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. 5-69 If you replace your vehicle’s tires with those not having a TPC Spec number, the tire pressure monitoring system may give an inaccurate low pressure warning. Non-TPC Spec tires may give a low pressure warning that is higher or lower than the proper warning level you would get with TPC Spec numbered 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. It’s all right to drive with your compact spare temporarily, it was developed for use on your vehicle. See CompactSpare Tireonpage5-87. Buying New Tires To ﬁnd out what kind and size of tires your vehicle needs, look at the tire and loading information label. For more information about this label and its location on your vehicle, see LoadingYourVehicleonpage4-33. 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, GM 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, ride, tire pressure monitoring system performance 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). Whenever you 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. Winter tires with the same speed rating as your original equipment tires may not be available for H, V, W, and ZR speed rated tires. If you choose snow tires with a lower speed rating, never exceed the tire’s maximum speed capability. 5-70 {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 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. 5-71 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. 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. 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. 5-72 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 ChangingaFlatTireonpage5-76 for more information. 5-73 Used Replacement Wheels Tire Chains {CAUTION: {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. Do not use tire chains. There is not enough clearance. Tire chains used on a vehicle without the proper amount of clearance can cause damage to the brakes, suspension or other vehicle parts. The area damaged by the tire chains could cause you to lose control of your vehicle and you or others may be injured in a crash. Use another type of traction device only if its manufacturer recommends it for use on your vehicle and tire size combination and road conditions. Follow that manufacturer’s instructions. To help avoid damage to your vehicle, drive slowly, readjust or remove the device if it is contacting your vehicle, and don’t spin your wheels. If you do ﬁnd traction devices that will ﬁt, install them on the rear tires. 5-74 If a Tire Goes Flat It is unusual for a tire to “blowout” while you’re driving, especially if you maintain your tires properly. See Tiresonpage5-54. 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. If a tire goes ﬂat, and your vehicle has a spare tire, see ChangingaFlatTireonpage5-76. This information shows you how to use your vehicle’s tire changing equipment and how to change a ﬂat tire safely. {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. 5-75 {CAUTION: Special tools and procedures are required to service a run-ﬂat tire. If these special tools and procedures aren’t used you or others could be injured and your vehicle could be damaged. Always be sure the proper tools and procedures, as described in the service manual, are used. To order a service manual see ServicePublications Ordering Information on page7-12. 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. Run-Flat Tires (CTS-V) If your vehicle has run-ﬂat tires, there is no spare tire and no tire changing equipment. Run-ﬂat tires can operate effectively with no air pressure for a limited distance and speed. Your vehicle also has a Tire Pressure Monitor (TPM) which will alert you if there is a loss of tire pressure in any of the tires. These tires perform so well without any air pressure that a Tire Pressure Monitor (TPM) is used to alert you when there is a low tire condition. {CAUTION: When the low tire warning light is displayed on the instrument panel cluster, your vehicle’s handling capabilities will be reduced during severe maneuvers. If you drive too fast, you could lose control of your vehicle. You or others could be injured. Don’t drive over 55 mph (90 km/h) when the low tire warning light is displayed. Drive cautiously and check your tire pressures as soon as you can. See Run-FlatTires(CTS-V)onpage5-61 and Tire PressureMonitorSystem(CTS-V)onpage5-65, for additional information. 5-76 {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 an automatic transmission shift lever in PARK (P), or shift a manual transmission to FIRST (1) or REVERSE (R). 3. Turn off the engine and do not restart while the vehicle is raised. 4. Do not allow passengers to remain in the vehicle. 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. When you have a ﬂat tire, use the following example as a guide to assist you in the placement of wheel blocks. The following information will tell you next how to use the jack and change a tire. 5-77 Removing the Spare Tire and Tools The equipment you’ll need is in the trunk. To gain access to the spare tire and jacking equipment, do the following: 1. Turn the center nut on the compact spare tire cover counterclockwise to remove it. Then remove the cover. 5-78 2. Turn the nut holding the jack counterclockwise and remove it. Then remove the jack and wheel wrench. 3. Remove the compact spare tire. See Compact SpareTireonpage5-87 for more information about the compact spare tire. 4. The tools you’ll be using next include the jack (A) and the wheel wrench (B). 5-79 Removing the Flat Tire and Installing the Spare Tire If your vehicle has wheel nut caps, turn the wheel wrench counterclockwise to remove the caps. Once the wheel cover and wheel nut caps have been removed, use the following steps to remove the ﬂat tire and install the spare tire. If your vehicle has wheel covers, use the ﬂat end of the wheel wrench to remove the covers. Turn the wheel wrench clockwise to gently pry off the wheel cover. Be careful not to scratch the aluminum wheel edge and don’t try to remove the wheel cover with your hands. 5-80 1. Place the wheel wrench (A) securely over the wheel nut (B). Turn the wheel wrench counterclockwise to loosen all the wheel nuts. Don’t remove them yet. 2. Find the jacking location using the diagram above and corresponding hoisting notches located in the plastic molding. The notches in the plastic molding are marked with a triangle shape to help you ﬁnd them. The front location (A) is about 14 inches (35.6 cm) from the rear edge of the front wheel well, and the rear location (B) is about 7 inches (17.8 cm) from the front edge of the rear wheel well. 5-81 {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. {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. 3. Attach the wheel wrench to the jack. 4. Turn the wheel wrench counterclockwise to lower the jack lift head until the jack ﬁts under the vehicle. 5-82 5. Raise the jack by turning the wheel wrench clockwise until the slots in the jack head ﬁt into the metal ﬂange located behind the triangle on the plastic molding as shown. 6. Put the compact spare tire near you. 7. Raise the vehicle by turning the wheel wrench clockwise. Raise the vehicle far enough off the ground for the compact spare tire to ﬁt under the vehicle. 8. Remove all the wheel nuts and take off the ﬂat tire. 10. Place the compact spare tire on the wheel-mounting surface. {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. 9. 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. 5-83 11. Put the wheel nuts back on with the rounded end of the nuts toward the wheel. Tighten each wheel nut by turning it clockwise with your hand until the wheel is held against the hub. 12. Lower the vehicle by turning the wheel wrench counterclockwise. Lower the jack completely. 5-84 {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 andSpeciﬁcationsonpage5-108 for wheel nut torque speciﬁcation. Notice: Improperly tightened wheel nuts can lead 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 Capacitiesand Speciﬁcationsonpage5-108 for the wheel nut torque speciﬁcation. 13. Tighten the wheel nuts ﬁrmly in a crisscross sequence as shown. Notice: Wheel covers will not ﬁt on your compact spare. If you try to put a wheel cover on the compact spare, you could damage the cover or the spare. Do not try to put a wheel cover on your compact spare tire. It will note ﬁt. Store the wheel cover in the trunk until you have the ﬂat tire repaired or replaced. 5-85 Storing a Flat or Spare Tire and Tools {CAUTION: Storing a jack, a tire, or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place. After you’ve put the compact spare tire on your vehicle, you’ll need to store the ﬂat tire in your trunk. Remove the foam support so that the ﬂat tire will ﬁt in the storage area. Place the ﬂat tire with the appearance-side face down and store the jack container in the center of the tire. See the diagram for more information. The compact spare is for temporary use only. Replace the compact spare tire with a full-size tire as soon as you can. 5-86 Use the following diagram as a guide for storing the compact spare tire in the trunk: A. Compact Spare Tire Cover Wing Nut B. Compact Spare Tire Cover C. Plastic Wing Nut D. Retainer E. Jack Container with Wheel Wrench and Jack F. Flat Road Tire G. Compact Spare Tire H. Foam Insert I. Bolt J. Wheel Wrench K. Jack L. Jack Container Compact Spare Tire Although the compact spare tire was fully inﬂated when the vehicle was new, it can lose air after a time. Check the inﬂation pressure regularly. It should be 60 psi (420 kPa). After installing the compact spare on the vehicle, stop as soon as possible and make sure the spare tire is correctly inﬂated. The compact spare is made to perform well at speeds up to 65 mph (105 km/h) for distances up to 3,000 miles (5 000 km), so you can ﬁnish your trip and have the full-size tire repaired or replaced at your convenience. Of course, it is best to replace the spare with a full-size tire as soon as possible. The spare tire will last longer and be in good shape in case it is needed again. Notice: When the compact spare is installed, do not take your vehicle through an automatic car wash with guide rails. The compact spare can get caught on the rails. That can damage the tire and wheel, and maybe other parts of your vehicle. Do not use the compact spare on other vehicles. And do not mix the compact spare tire or wheel with other wheels or tires. They will not ﬁt. Keep the spare tire and its wheel together. Notice: Tire chains will not ﬁt your compact spare. Using them can damage your vehicle and can damage the chains too. Do not use tire chains on your compact spare. 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: • Gasoline • Benzene • Naphtha • Carbon Tetrachloride • Acetone • Paint Thinner • Turpentine • Lacquer Thinner • Nail Polish Remover They can all be hazardous — some more than others — and they can all damage the vehicle, too. 5-87 Do not use any of these products unless this manual says you can. In many uses, these will damage the vehicle: • Alcohol • Laundry Soap • Bleach • Reducing Agents Fabric/Carpet Cleaning 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. Your GM dealer has cleaners for the cleaning of fabric and carpet. They will clean normal spots and stains very well. If the vehicle has the Ultra Lux® suede fabric, follow the listed procedures except do not use any solvents or dry cleaning products. Here are some cleaning tips: • Always read the instructions on the cleaner label. • Clean up stains as soon as you can — before they set. 5-88 • Carefully scrape off any excess stain. • 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. 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 the stain 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. Special Fabric Cleaning Problems Stains caused by such things as catsup, coffee, tea, milk, fruit, fruit juice, jelly, cheese, chocolate, 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. • 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. 5-89 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. • Never use oils, varnishes, solvent-based or abrasive cleaners, furniture polish, or shoe polish on leather. • 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. 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 VehicleCare/AppearanceMaterialsonpage5-95. Notice: If you use abrasive cleaners when cleaning 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. 5-90 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 RecommendedFluidsandLubricantsonpage6-13. 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 VehicleCare/AppearanceMaterialsonpage5-95. 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. 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 WashingYourVehicleonpage5-91. 5-91 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 page5-95. 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. Windshield 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 glass cleaning liquid or powder and water solution. The windshield is clean if beads do not form when it is rinsed 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. 5-92 Aluminum or Chrome-Plated Wheels The vehicle may be equipped with either aluminum or chrome-plated 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. Notice: If you use strong soaps, chemicals, abrasive polishes, cleaners, brushes, or cleaners that contain acid on aluminum or chrome-plated wheels, you could damage the surface of the wheel(s). The repairs would not be covered by your warranty. Use only GM-approved cleaners on aluminum or chrome-plated wheels. 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. Notice: Using chrome polish on aluminum wheels could damage the wheels. The repairs would not be covered by your warranty. Use chrome polish on chrome wheels only. Use chrome polish only on chrome-plated wheels, but avoid any painted surface of the wheel, and buff off immediately after application. Notice: If you drive your vehicle through an automatic car wash that has silicone carbide tire cleaning brushes, you could damage the aluminum or chrome-plated wheels. The repairs would not be covered by your warranty. Never drive a vehicle equipped with aluminum or chrome-plated wheels through an automatic car wash that uses silicone carbide tire cleaning brushes. 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. 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. 5-93 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. 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. 5-94 Vehicle Care/Appearance Materials See your GM dealer for more information on purchasing the following products. Description Usage Polishing Cloth Wax-Treated Tar and Road Oil Remover Interior and exterior polishing cloth. Removes tar, road oil, and asphalt. Chrome Cleaner and Polish Use on chrome or stainless steel. White Sidewall Tire Cleaner Removes soil and black marks from whitewalls. Vinyl Cleaner Glass Cleaner Chrome and Wire Wheel Cleaner Finish Enhancer 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. Description Usage Swirl Remover Polish Cleaner Wax Foaming Tire Shine Low Gloss Wash Wax Concentrate Spot Lifter Odor Eliminator 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 RecommendedFluidsandLubricants onpage6-13. 5-95 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 in the trunk. It is very helpful if you ever need to order parts. On this label, you will ﬁnd the following: • VIN • Model designation • Paint information • 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. 5-96 Your vehicle has an airbag system. Before attempting to add anything electrical to your vehicle, see Servicing Your Airbag-Equipped Vehicle on page1-62. Windshield Wiper Fuses The windshield wiper motor is protected by an internal circuit breaker. If the wiper motor overheats due to heavy snow, the wipers will stop until the motor cools and will then restart. Power Windows and Other Power Options Circuit breakers protect the power windows and power seats. 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 and circuit breakers. 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 a fuse blows, see your dealer for service immediately. 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. 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. The fuses are located in three fuse blocks, one located in the engine compartment on the passenger’s side and the other two under the rear seat. 5-97 Underhood Fuse Block To access the fuses, push in the two tabs located on each side of the fuse block cover. Then lift the cover off. The underhood fuse block is located in the engine compartment on the passenger’s side of the vehicle. See EngineCompartmentOverviewonpage5-12 for more information on location. Relays LO SPEED FAN RELAY MINI Usage Low Speed Fan Motor HI SPEED FAN RELAY MINI High Speed Fan Motor ACCESSORY RELAY MINI Accessory Power Outlets S/P FAN RELAY MINI Series/Parallel Fan 5-98 Relays Usage PARK LAMP RELAY MICRO Parking Lamps HORN RELAY Horn MICRO HI BEAM RELAY MICRO High-Beam Headlamps DRL RELAY MICRO-OPT Daytime Running Lamps LO BEAM RELAY/HID MINI-OPT Low-Beam HID Headlamps HDLP WASH RELAY MINI-OPT SPARE BLOWER Headlamp Washer Motor Not Used Front Blower RELAY MINI FOG LAMP RELAY MICRO Fog Lamps MAIN RELAY Powertrain/ECM MICRO CMP CLU Starter Solenoid STARTER RELAY MINI RELAY MICRO Compressor Clutch IGN-1 RELAY Ignition Switch (ON) MICRO Wiring Usage Harnesses BODY W/H Wiring Harness Connection Wiring Harness Connection Engine Wiring Harness Connection Forward Lamp Wiring Harness Connection I/P W/H ENG W/H FORWARD LAMP J Cases R REAR R REAR L REAR L REAR HI FAN LO FAN BLOWER STARTER ABS Usage RRPDB (Passenger’s Side Rear Power Distribution Box) RRPDB (Passenger’s Side Rear Power Distribution Box) LRPDB (Driver’s Side Rear Power Distribution Box) LRPDB (Driver’s Side Rear Power Distribution Box) High Cooling Fan Motor Low Cooling Fan Motor PWM Fan Motor Assembly Starter Solenoid Anti-Lock Brake System 5-99 Fuses RT PARK HORN Usage Passenger’s Side Taillamp Assembly, Front Sidemarker and Front Parking Lamp Assembly Dual Horn Assembly LT HI BEAM Driver’s Side High-Beam Headlamp LT LOW BEAM Driver’s Side Low-Beam Headlamp RT LOW BEAM Passenger’s Side Low-Beam Headlamp RT HI BEAM Passenger’s Side High-Beam Headlamp Manual Transmission Output Speed Sensor Not Used ECM (Electronic Control Module), TCM (Transmission Control Module), PASS-Key® III+ Module Driver’s Side Taillamp Assembly, Front Sidemarker and Front Parking Lamp Assembly Rear License Plate Assembly, Dash Integrated Module (DIM) DIM, ALDL (Assembly Line Data Link) Turn Signal/Hazard Flasher Module TOS SPARE THEFT LT PARK DIMMING DIM/ALDL FLASHER 5-100 Fuses ECM STRG CTLS HTR VLV/ CLTCH WASH NOZ PRE O2/CAM TCM/IPC SPARE Usage Electronic Control Module Steering Wheel Control Pad, Headlamp Switch Heater Valve, Clutch Switch (Normal Closed), Clutch Switch (Normal Open), Jumper to Start Relay Coil for Automatic Transmission Driver’s and Passenger’s Side Heated Washer Nozzles Driver’s & Passenger’s Side Oxygen Sensors, CAM Phaser, Canister Purge TCM, ECM and IPC (Instrument Panel Cluster) Not Used IGN MOD/MAF Front Bank Ignition Modules ELEC PRNDL Electronic PRNDL SPARE SPARE IGN SW Not Used Not Used Ignition Switch (Power to IGN-3 and CRANK) VOLT CHECK DIM (Dash Integration Module) Fuses ECM/TCM Usage TCM (Transmission Control Module), ECM (Electronic Control Module), IPC (Instrument Panel Cluster), PASS-Key® III+ Module WPR MOD Windshield Wiper Module Assembly ODD INJ/COILS Odd Ignition Coils, Fuel Injectors, Odd Injection Coils COMP CLUTCH Compressor Clutch WPR SW FOG LAMP OUTLET POST 02 I/P OUTLET CCP EVEN INJ/COILS SPARE SPARE SPARE Windshield Wiper/Washer Switch Fog Lamps Center Console Accessory Power Outlet Driver’s and Passenger’s Side Oxygen Sensors, LRPDB (Pusher Cooling Fan Relay) Instrument Panel Accessory Power Outlet Climate Control Even Injection Coils Not Used Not Used Not Used Circuit Breakers HDLP WASH C/B-OPT Usage Headlamp Washer Motor Rear Underseat Fuse Block To access the rear underseat fuse blocks, you will have to ﬁrst remove the rear seat cushion. Removing the Rear Seat Cushion Notice: If, when removing or reinstalling the rear seat, you do not do it carefully, you could damage the fuse center. Avoid contact between the rear seat and the fuse center whenever you remove or reinstall the rear seat. To remove the rear seat cushion, do the following: 1. Pull up on the front of the cushion to release the front hooks. 2. Pull the cushion up and out toward the front of the vehicle. 3. Slide the cushion out one of the rear doors and set it aside. 5-101 Rear Pass-Through Seat Split-Folding Rear Seat 5-102 {CAUTION: A safety belt that is not properly routed through the seat cushion or is twisted will not provide the protection needed in a crash. If the safety belt has not been routed through the seat cushion at all, it will not be there to work for the next passenger. The person sitting in that position could be badly injured. After reinstalling the seat cushion, always check to be sure that the safety belts are properly routed and are not twisted. To reinstall the rear seat cushion, do the following: 1. Position the seat cushion so that you can route the safety belts through the proper slots in the seat cushion. 2. Slide the rear of the cushion up and under the seatback so the rear-locating guides hook into the wire loops on the back frame. 3. With the seat cushion lowered, push rearward and then press down on the seat cushion until the seat cushion snaps into place. 4. Push and pull on the seat cushion to make sure it is locked into place. 5. Check to make sure the safety belts are properly routed and that no portion of any safety belt is trapped under the seat cushion. 5-103 Rear Underseat Fuse Block (Driver’s Side) The driver’s side rear fuse block is located under the rear seat on the driver’s side of the vehicle. The rear seat cushion must be removed to access the rear fuse block. See “Removing the Rear Seat Cushion” listed previously. To access the fuse block, push in the two tabs located at each end of the fuse block cover. Then lift the cover off. 5-104 Fuses SPARE SPARE AUDIO SPARE Usage Not Used Not Used Radio, OnStar Module Not Used REAR DR MOD Rear Door Modules SPARE DRIVER DR MOD BAS HDLP LEVELING SPARE CCP IGN 3 SPARE Not Used Driver’s Door Module Taillamps, Center High-Mounted Stoplamp, Flasher Module, ABS Module, Trailer Lamps Headlamp Leveling System Chassis Sensors (Export Only) Not Used CCP (Climate Control Panel) Heated Seat Modules, Air Inlet Motor, Shifter Assembly Not Used Usage Relays Usage Fuses SPARE Not Used FUSE PULLER Fuse Puller Driver’s Heated Seat Module Driver’s Power Seat Switch, Memory Seat Module DR RELEASE Trunk Release Motor REVERSE ISRVM (Inside Rearview Mirror), License Plate Lamp Assembly Not Used Taillamp Assemblies, Front Position Lamp Assemblies L FRT HTD SEAT MOD MEM/ADAPT SEAT TRUNK LAMP SPARE POSITION LAMP J Cases AMP Usage Audio Ampliﬁer PUSHER FAN Pusher Fan (Export Only) Relays BAS RELAY MINI Usage Brake Apply Sensor PUSHER FAN Pusher Fan (Export Only) L POSITION RELAY MICRO Driver’s Side Position Lamp TRK DR REL SOL RELAY Trunk Release Motor MICRO REV LAMP RELAY MICRO ISRVM (Inside Rearview Mirror), License Plate Lamp Assembly R POSITION RELAY MICRO Passenger’s Side Position Lamp Heated Seat Modules, Air Inlet IGN 3 RELAY Motor, Shifter Assembly MICRO STANDING LAMP RLY MICRO Control for Position Lamp Relays Circuit Breakers SEAT C/B Usage Power Seat Switches, Memory Seat Module Misc. JOINT Usage CONNECTOR Joint Connector 5-105 Rear Underseat Fuse Block (Passenger’s Side) The passenger’s side rear fuse block is located under the rear seat on the passenger’s side of the vehicle. The rear seat cushion must be removed to access the rear fuse block. See “Removing the Rear Seat Cushion” listed previously. To access the fuse block, push in the two tabs located at each end of the fuse block cover. Then lift the cover off. 5-106 Fuses Usage TRUNK DIODE Trunk Lamp POWER SOUNDER Power Sounder, Inclination Sensor SPARE Not Used CANISTER VENT FUEL PUMP MTR Canister Vent Solenoid Fuel Pump Motor SPARE R FRT HTD SEAT MOD SPARE AIR BAG RIM ABS SPARE SPARE Not Used Passenger’s Side Heated Seat Module Not Used SDM (Sensing Diagnostic Module) ISRVM (Inside Rearview Mirror), Power Sounder, RIM Anti-Lock Brake System Not Used Not Used Fuses SPARE Not Used Usage FUSE PULLER Fuse Puller LAMP INTERIOR Hush Panel Lamps, Puddle Lamps, Overhead Courtesy Lamp Assembly PSGR DR MOD Right Front Passenger Door Module RIM/IGN SW RIM (Rear Integration Module), Ignition Switch, Key Lock Cylinder REAR FOG LAMP SPARE TV/VICS Rear Fog Lamps (Export Only) Not Used TV Tuner Assembly (Export Only), VICS (Vehicle Information Communication System) Module J Cases Usage REAR DEFOG Rear Window Defogger Element SUNROOF MOD Power Sunroof Module Relays SPARE Not Used Usage REAR DEFOG RELAY MINI Rear Window Defogger Relays SPARE Not Used Usage REAR FOG LAMP

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2005 Cadillac CTS Owners Manual