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Wiper Wiper/Washer Switch
Relays
Usage
Air Conditioning Compressor
A/C CMPRSR Backup Lamp Backup Lamp BEAM SEL
DRL
FOG/LAMP
HDLP HORN
IGN 3 HVAC
Beam Selection Daylight Running Lamps Fog Lamps (If Equipped) Headlamps Horn Ignition 3, Climate Control, Climate Control Head Fuse, Power Seat Fuse
PRK/LAMP
PWR/TRN
RAP
RUN/CRNK
Usage Front Parking Lamp Fuse, Rear Parking Lamps Powertrain, Electronic Throttle Control Fuse, Oxygen Sensor Fuse Retained Accessory Power (Power Window Fuse, Wiper/Washer Switch Fuse) Run/Crank, Airbag System Fuse, Cruise Control Fuse, Ignition Fuse, Back-Up Lamps, ABS Fuse, Front Axle, PCM-1, Injectors Fuse, Transmission Fuse, ERLS
Chevrolet Colorado Owner Manual - 2011
Black plate (44,1)
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Vehicle Care
Relays
Usage
STRTR
VSES
WPR WPR 2
Starter Relay (PCM Relay) Vehicle Stability Enhancement System Wipers (On/Off) Wiper 2 (High/Low)
Miscellaneous
Usage
A/C CLTCH
MEGA FUSE
WPR
Diode — Air Conditioning, Clutch Mega Fuse Diode — Wiper
2.9L and 3.7L
Chevrolet Colorado Owner Manual - 2011
Black plate (45,1)
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5.3L
Fuses
Usage
Fuses
Trailer Park Lamp Communication Interface Module
Usage Supplemental Inflatable Restraint System, Sensing and Diagnostic Module Trailer Auxiliary Maxi-Fuse
Chevrolet Colorado Owner Manual - 2011
Black plate (46,1)
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Vehicle Care
Wheels and Tires
Tires Every new GM vehicle has high-quality tires made by a leading tire manufacturer. See the warranty manual for information regarding the tire warranty and where to get service. For additional information refer to the tire manufacturer.
{ WARNING . Poorly maintained and
improperly used tires are dangerous.
. Overloading the tires can
cause overheating as a result of too much flexing. There could be a blowout and a serious crash. See Vehicle Load Limits on page 9‑20.
(Continued)
WARNING (Continued)
WARNING (Continued)
. Underinflated tires pose the same danger as overloaded tires. The resulting crash could cause serious injury. Check all tires frequently to maintain the recommended pressure. Tire pressure should be checked when the tires are cold.
. Overinflated tires are more likely to be cut, punctured, or broken by a sudden impact — such as when hitting a pothole. Keep tires at the recommended pressure.
. Worn or old tires can cause a
crash. If the tread is badly worn, replace them.
. Replace any tires that have been damaged by impacts with potholes, curbs, etc.
(Continued)
. Improperly repaired tires can
cause a crash. Only the dealer or an authorized tire service center should repair, replace, dismount, and mount the tires.
. Do not spin the tires in
excess of 55 km/h (35 mph) on slippery surfaces such as snow, mud, ice, etc. Excessive spinning may cause the tires to explode.
Tire Sidewall Labeling Useful information about a tire is molded into its sidewall. The examples show a typical passenger vehicle tire and a compact spare tire sidewall.
Chevrolet Colorado Owner Manual - 2011
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(E) Tire Ply Material: The type of cord and number of plies in the sidewall and under the tread. (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 10‑63. (G) Maximum Cold Inflation Load Limit: Maximum load that can be carried and the maximum pressure needed to support that load.
criteria have a TPC specification code molded onto the sidewall. GM's TPC specifications meet or exceed all federal safety guidelines. (C) DOT (Department of Transportation): 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 the DOT (Department of Transportation) 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.
Passenger (P‐Metric) Tire Example (A) Tire Size: The tire size 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) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance
Chevrolet Colorado Owner Manual - 2011
Black plate (48,1)
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Vehicle Care
regular road tire has lost air and gone flat. If the vehicle has a compact spare tire, see Compact Spare Tire on page 10‑82 and If a Tire Goes Flat on page 10‑67. (C) Tire Identification Number (TIN): The letters and numbers following the DOT (Department of Transportation) code is 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. (D) Maximum Cold Inflation Load Limit: Maximum load that can be carried and the maximum pressure needed to support that load.
(E) Tire Inflation: The temporary use tire or compact spare tire should be inflated to 420 kPa (60 psi). For more information on tire pressure and inflation see Tire Pressure on page 10‑52. (F) Tire Size: A combination of letters and numbers define a tire's width, height, aspect ratio, construction type, and service description. The letter T as the first character in the tire size means the tire is for temporary use only. (G) TPC Spec (Tire Performance Criteria Specification): 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.
Compact Spare Tire Example
(A) Tire Ply Material: The type of cord and number of plies in the sidewall and under the tread. (B) Temporary Use Only: The compact spare tire or temporary use tire has a tread life of approximately 5 000 km (3,000 mi) and should not be driven at speeds over 105 km/h (65 mph). The compact spare tire is for emergency use when a
Chevrolet Colorado Owner Manual - 2011
Black plate (49,1)
Tire Designations
Tire Size The following is an example of a typical passenger vehicle tire size.
(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. (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 index and speed rating of the tire. The load index represents the load carrying capacity a tire
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is certified to carry. The speed rating is the maximum speed a tire is certified to carry a load.
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 kPa (kilopascal) or psi (pounds per square inch). Accessory Weight: 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.
Chevrolet Colorado Owner Manual - 2011
Black plate (50,1)
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Vehicle Care
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 Tire Pressure: The amount of air pressure in a tire, measured in kPa (kilopascal) or psi (pounds per square inch) before a tire has built up heat from driving. See Tire Pressure on page 10‑52. Curb Weight: 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 Vehicle Load Limits on page 9‑20. GAWR FRT: Gross Axle Weight Rating for the front axle. See Vehicle Load Limits on page 9‑20.
GAWR RR: Gross Axle Weight Rating for the rear axle. See Vehicle Load Limits on page 9‑20. 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 can be inflated. The maximum air pressure is molded onto the sidewall.Chevrolet Colorado Owner Manual - 2011
Black plate (51,1)
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 68 kg (150 lbs). See Vehicle Load Limits on page 9‑20. 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 as shown on the tire placard. See Tire Pressure on page 10‑52
andVehicle Load Limits on page 9‑20. 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.Vehicle Care
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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 1.6 mm (1/16 in) of tread remains. See When It Is Time for New Tires on page 10‑61.
Chevrolet Colorado Owner Manual - 2011
Black plate (52,1)
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Vehicle Care
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 10‑63. Vehicle Capacity Weight: The number of designated seating positions multiplied by 68 kg (150 lbs) plus the rated cargo load. See Vehicle Load Limits on page 9‑20. 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 vehicle capacity weight and the original equipment tire size and recommended inflation pressure. See “Tire and Loading Information Label” under Vehicle Load Limits on page 9‑20.
Tire Pressure Tires need the correct amount of air pressure to operate effectively. Notice: Neither tire underinflation nor overinflation is good. Underinflated tires, or tires that do not have enough air, can result in:
. Tire overloading and
over-heating which could lead to a blowout.
. Premature or
irregular wear. . Poor handling. . Reduced fuel economy.
Overinflated tires, or tires that have too much air, can result in:
. Unusual wear. . Poor handling. . Rough ride. . Needless damage from
road hazards.
The Tire and Loading Information label on the vehicle indicates the original equipment tires and the correct cold tire inflation pressures. The recommended pressure is the minimum air pressure needed to support the vehicle's maximum load carrying capacity.
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If the inflation pressure is low, add air until the recommended pressure is reached. If the inflation pressure is high, press on the metal stem in the center of the tire valve to release air Re-check the tire pressure with the tire gauge. Return the valve caps on the valve stems to prevent leaks and keep out dirt and moisture.
For additional information regarding how much weight the vehicle can carry, and an example of the Tire and Loading Information label, see Vehicle Load Limits on page 9‑20. How the vehicle is loaded affects vehicle handling and ride comfort. Never load the vehicle with more weight than it was designed to carry.
When to Check Check your tires once a month or more. Do not forget the spare tire. If the vehicle has a compact spare tire, it should be at 60 psi (420 kPa). See Compact Spare Tire on page 10‑82 and Full-Size Spare Tire on page 10‑83 for additional information.
How to Check Use a good quality pocket-type gauge to check tire pressure. Proper tire inflation cannot be determined by looking at the tire. Check the tire inflation pressure when the tires are cold, meaning the vehicle has not been driven for at least three hours or no more than 1.6 km (1 mi). Remove the valve cap from the tire valve stem. Press the tire gauge 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.
Chevrolet Colorado Owner Manual - 2011
Black plate (54,1)
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Vehicle Care
Tire Pressure for High-Speed Operation
{ WARNING
Driving at high speeds, 160 km/h (100 mph) 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.
Vehicles with P235/50R18 size tires require inflation pressure adjustment when driving the vehicle at speeds of 160 km/h (100 mph) or higher. Set the cold inflation pressure to the maximum inflation pressure shown on the tire sidewall, or 241 kPa (35 psi), whichever is lower. See the example following. Return the tires to the recommended cold tire inflation pressure when high-speed driving has ended. See Vehicle Load Limits on page 9‑20 and Tire Pressure on page 10‑52. Example: The maximum load and inflation pressure is molded on the tire sidewall, in small letters, near the rim flange. It will read something like this: Maximum load 690 kg (1521 lbs) 300 kPa (44 psi) Max. Press. For this example, set the inflation pressure for high‐speed driving at 241 kPa (35 psi).
Tire Pressure Monitor System The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. The TPMS sensors monitor the air pressure in your tires and transmit tire pressure readings to a receiver located in the vehicle. Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label. (If your vehicle has tires of a different size than the size indicated on the vehicle placard or tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.) As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire
Chevrolet Colorado Owner Manual - 2011
Black plate (55,1)
pressure telltale when one or more of your tires is significantly under‐inflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. 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. Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver's responsibility to maintain correct tire pressure, even if under‐inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale. Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly.
The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start‐ups as long as the malfunction exists. When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly. See Tire Pressure Monitor Operation on page 10‑55 for additional information.
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Federal Communications Commission (FCC) and Industry Canada See Radio Frequency Statement on page 13‑17 for information regarding Part 15 of the Federal Communications Commission (FCC) rules and Industry Canada Standards RSS-210/220/310.
Tire Pressure Monitor Operation This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS is designed to warn the driver when a low tire pressure condition exists. TPMS sensors are mounted onto each tire and wheel assembly on your vehicle, excluding the spare tire. The TPMS sensors monitor the air pressure in your tires and transmit the tire pressure readings to a receiver located in the vehicle.
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Black plate (56,1)
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Vehicle Care
When a low tire pressure condition is detected, the TPMS illuminates the low tire pressure warning light located on the instrument cluster. If the warning light comes on, stop as soon as possible and inflate the tires to the recommended pressure shown on the tire loading information label. See Vehicle Load Limits on page 9‑20. A message to check the pressure in a specific tire displays in the Driver Information Center (DIC). The low tire pressure warning light and the DIC warning message come on at each ignition cycle until the tires are inflated to the correct inflation
Your vehicle's TPMS can warn you about a low tire pressure condition but it does not replace normal tire maintenance. See Tire Inspection on page 10‑59, Tire Rotation on page 10‑59 and Tires on page 10‑46. Notice: Tire sealant materials are not all the same. A non-approved tire sealant could damage the TPMS sensors. TPMS sensor damage caused by using an incorrect tire sealant is not covered by the vehicle warranty. Always use only the GM-approved tire sealant available through your dealer or included in the vehicle.
pressure. For additional information and details about the DIC operation and displays see Driver Information Center (DIC) on page 5‑19 and Tire Messages on page 5‑26. The low tire pressure warning light may come on in cool weather when the vehicle is first started, and then turn off as the vehicle is driven. This could be an early indicator that the air pressure is getting low and needs to be inflated to the proper pressure. A Tire and Loading Information label shows the size of the original equipment tires and the correct inflation pressure for the tires when they are cold. See Vehicle Load Limits on page 9‑20, for an example of the Tire and Loading Information label and its location on your vehicle. Also see Tire Pressure on page 10‑52.
Chevrolet Colorado Owner Manual - 2011
Black plate (57,1)
TPMS Malfunction Light and Message The TPMS will not function properly if one or more of the TPMS sensors are missing or inoperable. When the system detects a malfunction, the low tire pressure warning light flashes for about one minute and then stays on for the remainder of the ignition cycle. A DIC warning message also displays. The malfunction light and DIC warning message come on at each ignition cycle until the problem is corrected. Some of the conditions that can cause these to come on are: . One of the road tires has been
replaced with the spare tire. The spare tire does not have a TPMS sensor. The malfunction light and the DIC message should go off after the road tire is replaced and the sensor matching process is performed successfully. See "TPMS Sensor Matching Process" later in this section.
The TPMS sensor matching process was not done or not completed successfully after rotating the vehicle's tires. The malfunction light and the DIC message should go off once the TPMS sensor matching process is performed successfully. See “TPMS Sensor Matching Process” later in this section. . One or more TPMS sensors
are missing or damaged. The malfunction light and the DIC message should go off when the TPMS sensors are installed and the sensor matching process is performed successfully. See your dealer for service.
. Replacement tires or wheels do not match the original equipment tires or wheels. Tires and wheels other than those recommended could prevent the TPMS from functioning properly. See Buying New Tires on page 10‑61.
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. Operating electronic devices or being near facilities using radio wave frequencies similar to the TPMS could cause the TPMS sensors to malfunction.
If the TPMS is not functioning properly, it cannot detect or signal a low tire condition. See your dealer for service if the TPMS malfunction light and DIC message comes on and stays on. TPMS Sensor Matching Process Each TPMS sensor has a unique identification code. The identification code needs to be matched to a new tire/wheel position after rotating the vehicle’s tires or replacing one or more of the TPMS sensors. Also, the TPMS sensor matching process should be performed after replacing a spare tire with a road tire containing the TPMS sensor.
Chevrolet Colorado Owner Manual - 2011
Black plate (58,1)
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Vehicle Care
The malfunction light and the DIC message should go off at the next ignition cycle. The sensors are matched to the tire/wheel positions, using a TPMS relearn tool, in the following order: driver side front tire, passenger side front tire, passenger side rear tire, and driver side rear. See your dealer for service or to purchase a relearn tool. There is one minute to match the first tire/wheel position, and five minutes overall to match all four tire/wheel positions. If it takes longer, the matching process stops and must be restarted. The TPMS sensor matching procedure is: 1. Set the parking brake. 2. Turn the ignition to ON/RUN with
the engine off.
3. Turn the exterior lamp switch from AUTO to OFF four times within three seconds. A double horn chirp will sound and the TPMS low tire warning light starts flashing. The double horn chirp and flashing TPMS warning light indicates the TPMS matching process has started. The TPMS warning light should continue flashing throughout the matching procedure. The LOW TIRE message displays on the Driver Information Center (DIC).
4. Start with the driver side
front tire.
5. Place the relearn tool against
the tire sidewall, near the valve stem. Then press the button to activate the TPMS sensor. A horn chirp confirms that the sensor identification code has been matched to this tire and wheel position.
6. Proceed to the passenger side
front tire, and repeat the procedure in Step 5.
7. Proceed to the passenger side
rear tire, and repeat the procedure in Step 5.
8. Proceed to the driver side rear
tire, and repeat the procedure in Step 5.
Chevrolet Colorado Owner Manual - 2011
Black plate (59,1)
9. After hearing the confirming horn chirp for the driver side rear tire, check to see if the TPMS low tire warning light and the DIC LOW TIRE messages have turned off. If yes, the TPMS sensors have been relearned. Turn the ignition switch to LOCK/OFF. If the low tire warning light and the SERV TPM message on the DIC are on after completing Step 5 for the driver side rear tire, the sensor relearn process has not been successful. Turn the ignition to LOCK/OFF and repeat the matching process beginning with Step 2. 10. Set all four tires to the
recommended air pressure level as indicated on the Tire and Loading Information label.
Tire Inspection We recommend that the tires, including the spare tire, if the vehicle has one, be inspected for signs of wear or damage at least once a month. Replace the tire if: . The indicators at three or
more places around the tire can be seen.
. There is 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.
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. The tire has a bump, bulge,
or split.
. The tire has a puncture, cut, or other damage that cannot be repaired well because of the size or location of the damage.
Tire Rotation Tires should be rotated every 12 000 km (7,500 mi). See Scheduled Maintenance on page 11‑2. Tires are rotated to achieve a uniform wear for all tires. The first rotation is the most important.
Chevrolet Colorado Owner Manual - 2011
Black plate (60,1)
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Vehicle Care
Any time unusual wear is noticed, rotate the tires as soon as possible and check the wheel alignment. Also check for damaged tires or wheels. See When It Is Time for New Tires on page 10‑61 and Wheel Replacement on page 10‑65.
Use this rotation pattern when rotating the tires.
If the vehicle has a compact spare tire, do not include it in the tire rotation. Adjust the front and rear tires to the recommended inflation pressure on the Tire and Loading Information label after the tires have been rotated. See Tire Pressure on page 10‑52
and Vehicle Load Limits on page 9‑20. Reset the Tire Pressure Monitor System. See Tire Pressure Monitor Operation on page 10‑55. Check that all wheel nuts are properly tightened. See “Wheel Nut Torque” under Capacities and Specifications on page 12‑2.{ WARNING
Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, a cloth or a paper towel can be used, however, use a scraper or wire brush later to remove all rust or dirt.
Lightly coat the center of the wheel hub with wheel bearing grease after a wheel change or tire rotation to prevent corrosion or rust build-up. Do not get grease on the flat wheel mounting surface or on the wheel nuts or bolts.
Chevrolet Colorado Owner Manual - 2011
Black plate (61,1)
When It Is Time for New Tires Factors, such as maintenance, temperatures, driving speeds, vehicle loading, and road conditions affect the wear rate of the tires.
Treadwear indicators are one way to tell when it is time for new tires. Treadwear indicators appear when the tires have only 1.6 mm (1/16 in) or less of tread remaining. Some commercial truck tires may not have treadwear indicators. See Tire
Inspection on page 10‑59 and Tire Rotation on page 10‑59 for additional information. The rubber in tires ages over time. This also applies to the spare tire, if the vehicle has one, even if it is never used. Multiple conditions including temperatures, loading conditions, and inflation pressure maintenance affect how fast aging takes place. Tires will typically need to be replaced due to wear before they may need to be replaced due to age. Consult the tire manufacturer for more information on when tires should be replaced. Vehicle Storage Tires age when stored normally mounted on a parked vehicle. Park a vehicle that will be stored for at least a month in a cool, dry, clean area away from direct sunlight to slow aging. This area should be free of grease, gasoline or other substances that can deteriorate rubber.
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Parking for an extended period can cause flat spots on the tires that may result in vibrations while driving. When storing a vehicle for at least a month, remove the tires or raise the vehicle to reduce the weight from the tires.
Buying New Tires GM has developed and matched specific tires for the vehicle. The original equipment tires installed were designed to meet General Motors Tire Performance Criteria Specification (TPC Spec) system rating. When replacement tires are needed, GM strongly recommends buying tires with the same TPC Spec rating. GM's exclusive TPC Spec system considers over a dozen critical specifications that impact the overall performance of the vehicle, including brake system performance, ride and handling, traction control, and tire pressure monitoring performance. GM's TPC
Chevrolet Colorado Owner Manual - 2011
Black plate (62,1)
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Vehicle Care
Spec number is molded onto the tire's sidewall near the tire size. If the tires have an all‐season tread design, the TPC Spec number will be followed by MS for mud and snow. See Tire Sidewall Labeling on page 10‑46 for additional information. GM recommends replacing all the tires at the same time. Uniform tread depth on all tires will help to maintain the performance of the vehicle. Braking and handling performance may be adversely affected if all the tires are not replaced at the same time. See Tire Inspection on page 10‑59 and Tire Rotation on page 10‑59 for information on proper tire rotation.
{ WARNING Tires could explode during improper service. Attempting to mount or dismount a tire could cause injury or death. Only your
WARNING (Continued)
WARNING (Continued)
dealer or authorized tire service center should mount or dismount the tires.
{ WARNING
Mixing tires of different sizes, brands, or types may cause loss of control of the vehicle, resulting in a crash or other vehicle damage. Use the correct size, brand, and type of tires on all wheels.
{ WARNING
Using bias-ply tires on the vehicle may cause the wheel rim flanges to develop cracks after many miles of driving.
A tire and/or wheel could fail suddenly and cause a crash. Use only radial-ply tires with the wheels on the vehicle.
If the vehicle tires must be replaced with a tire that does not have a TPC Spec number, make sure they are the same size, load range, speed rating, and construction (radial) as the original tires. Vehicles that have a tire pressure monitoring system could give an inaccurate low‐pressure warning if non‐TPC Spec rated tires are installed. See Tire Pressure Monitor System on page 10‑54. The Tire and Loading Information label indicates the original equipment tires on the vehicle. See Vehicle Load Limits on page 9‑20, for the label location and more information about the Tire and Loading Information label.
(Continued)
(Continued)
Chevrolet Colorado Owner Manual - 2011
Black plate (63,1)
Different Size Tires and Wheels If wheels or tires are installed that are a different size than the original equipment wheels and tires, vehicle performance, including its braking, ride and handling characteristics, stability, and resistance to rollover may be affected. If the vehicle has electronic systems such as antilock brakes, rollover airbags, traction control, and electronic stability control, the performance of these systems can also be affected.
{ WARNING
If different sized wheels are used, there may not be an acceptable level of performance and safety if tires not recommended for those wheels are selected. This increases the chance of a crash and serious injury. Only use GM specific wheel and tire systems
(Continued)
WARNING (Continued)
developed for the vehicle, and have them properly installed by a GM certified technician.
See Buying New Tires on page 10‑61 and Accessories and Modifications on page 10‑4 for additional information.
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
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(NHTSA), 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 (UTQG) 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.
Chevrolet Colorado Owner Manual - 2011
Black plate (64,1)
10-64
Vehicle Care
All Passenger Car Tires Must Conform to Federal Safety Requirements In Addition To These Grades.
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 (1½) 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.
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 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.
Chevrolet Colorado Owner Manual - 2011
Black plate (65,1)
Wheel Alignment and Tire Balance The tires and wheels were aligned and balanced at the factory to provide the longest tire life and best overall performance. Adjustments to wheel alignment and tire balancing will not be necessary on a regular basis. However, check the alignment if there is unusual tire wear or if the vehicle is pulling to one side or the other. If the vehicle vibrates when driving on a smooth road, the tires and wheels might need to be rebalanced. See your dealer for proper diagnosis.
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. Some aluminum wheels can be repaired. See your dealer if any of these conditions exist. Your dealer will know the kind of wheel that is needed. Each new wheel should have the same load-carrying capacity, diameter, width, offset, and be mounted the same way as the one it replaces.
Vehicle Care
10-65
Replace wheels, wheel bolts, wheel nuts, or Tire Pressure Monitor System (TPMS) sensors with new GM original equipment parts.
{ WARNING
Using the wrong replacement wheels, wheel bolts, or wheel nuts can be dangerous. It could affect the braking and handling of the vehicle. Tires can lose air, and cause loss of control, causing a crash. Always use the correct wheel, wheel bolts, and wheel nuts for replacement.
Chevrolet Colorado Owner Manual - 2011
Black plate (66,1)
10-66
Vehicle Care
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 If a Tire Goes Flat on page 10‑67 for more information. Used Replacement Wheels
{ WARNING
Replacing a wheel with a used one is dangerous. How it has been used or how far it has been driven may be unknown. It could fail suddenly and cause a crash. When replacing wheels, use a new GM original equipment wheel.
Tire Chains
{ WARNING
If your vehicle has P215/70R16, P235/75R16, P265/70R17, P235/ 50R18, or P265/65R18 size tires, do not use tire chains. They can damage your vehicle because 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.
(Continued)
WARNING (Continued)
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. Do not spin the vehicle's wheels. If you do find traction devices that will fit, install them on the rear tires.
Notice: If your vehicle has a tire size other than P215/70R16, P235/ 75R16, P265/70R17, P235/50R18, or P265/65R18 use tire chains only where legal and only when you must. Use chains that are the proper size for your tires. Install them on the tires of the rear axle.
Chevrolet Colorado Owner Manual - 2011
Black plate (67,1)
Do not use chains on the tires of the front axle. 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.
If a Tire Goes Flat It is unusual for a tire to blowout while driving, especially if the tires are maintained properly. If air goes out of a tire, it is much more likely to leak out slowly. But if there ever is a blowout, here are a few tips about what to expect and what to do: If a front tire fails, the flat tire creates 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 off the road, if possible. A rear blowout, particularly on a curve, acts much like a skid and may require the same correction as used in a skid. Stop pressing the accelerator pedal and steer to straighten the vehicle. It may be very bumpy and noisy. Gently brake to a stop, well off the road, if possible.
{ WARNING
Driving on a flat tire will cause permanent damage to the tire. Re-inflating a tire after it has been driven on while severely underinflated or flat may cause a blowout and a serious crash. Never attempt to re-inflate a tire that has been driven on while severely underinflated or flat. Have your dealer or an authorized (Continued)
Vehicle Care
10-67
WARNING (Continued)
tire service center repair or replace the flat tire as soon as possible.
{ WARNING Lifting a vehicle and getting under it to do maintenance or repairs is dangerous without the appropriate safety equipment and training. If a jack is provided with the vehicle, it 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. If a jack is provided with the vehicle, only use it for changing a flat tire.
If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place, well off the road,
Chevrolet Colorado Owner Manual - 2011
Black plate (68,1)
10-68
Vehicle Care
if possible. Turn on the hazard warning flashers. See Hazard Warning Flashers on page 6‑4.
{ WARNING
Changing a tire can be dangerous. The vehicle can slip off the jack and roll over or fall causing injury or death. Find a level place to change the tire. To help prevent the vehicle from moving:
1. Set the parking brake firmly. 2. Put an automatic
transmission in P (Park) or a manual transmission in 1 (First) or R (Reverse).
3. For four-wheel-drive vehicles, be sure the transfer case is in a drive gear – not in N (Neutral).
4. Turn off the engine and do not restart while the vehicle is raised.
(Continued)
The following information explains how to use the jack and change a tire.
Tire Changing
Removing the Spare Tire and Tools
WARNING (Continued)
5. Do not allow passengers to
remain in the vehicle.
6. Place wheel blocks on both
sides of the tire at the opposite corner of the tire being changed.
When the vehicle has a flat tire (B), use the following example as a guide to assist in the placement of the wheel blocks (A).
A. Wing Nut B. Storage Bag and Tools
A. Wheel Block B. Flat Tire
Chevrolet Colorado Owner Manual - 2011
Black plate (69,1)
Vehicle Care
10-69
Regular/Extended Cab For regular and extended cab vehicles, the jack and wheel blocks are located under the cover at the center of the vehicle behind the front seats.
The tools you will need are located under the right front passenger seat. 1. Move the seat all the way
forward to locate the tool bag.
2. Locate the wing nut (A) used to
retain the storage bag and tools (B). Turn it counterclockwise to release the bag.
Put the tools to the side while you access the jack and wheel blocks.
1. Turn the wing nut on the cover counterclockwise to remove it.
A. Jack B. Wheel Blocks C. Wing Nut D. Jack Knob
2. Lower the jack (A) by turning the
jack knob (D) counterclockwise to release the jack from the bracket.
3. Turn the wing nut (C) holding the
wheel blocks (B) to the back of the vehicle counterclockwise to release the wheel blocks.
Chevrolet Colorado Owner Manual - 2011
Black plate (70,1)
10-70
Vehicle Care
Crew Cab For crew cab models, the jack and wheel blocks are located under the driver side rear seat. 1. Reach under the rear seat to
access the jack and wheel blocks.
3. Remove the wheel blocks and
the wheel block retainer by turning the wing nut counterclockwise.
Use the jack handle extensions and the wheel wrench to remove the underbody-mounted spare tire.
1. Assemble the wheel wrench (D),
the jack handle extensions (A) and the jack handle (C) as shown.
2. Turn the jack knob
counterclockwise to lower the jack all the way and release it from the bracket.
A. Jack Handle Extensions B. Jack C. Jack Handle D. Wheel Wrench E. Wheel Blocks
Chevrolet Colorado Owner Manual - 2011
Black plate (71,1)
If the spare tire does not lower to the ground, the secondary latch is engaged causing the tire not to lower. See Secondary Latch System on page 10‑79.
Vehicle Care
10-71
Removing the Flat Tire and Installing the Spare Tire Use the following pictures and instructions to remove the flat tire and raise the vehicle. The tools you will be using include the jack (A), the wheel blocks (B), the extension tool (C), the jack handle extensions (D), and the wheel wrench (E).
2.
Insert the chiseled end of the jack handle (C) at a slight angle through the hole in the rear bumper and into the funnel-shaped guide.
3. Turn the wheel wrench (D)
counterclockwise to lower the spare tire to the ground. Continue to turn the wheel wrench until the spare tire can be pulled out from under the vehicle.
4. Tilt the retainer when the tire has been lowered, and slide it up the cable so it can be pulled up through the wheel opening. 5. Put the spare tire near the
flat tire.
1. Do a safety check before
proceeding. See If a Tire Goes Flat on page 10‑67 for more information.
Chevrolet Colorado Owner Manual - 2011
Black plate (72,1)
10-72
Vehicle Care
{ WARNING
Raising the 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.
2. Remove the center cap by
3. Use the wheel wrench to loosen
placing the chisel end of the wheel wrench (E) into one of the slots on the wheel and gently prying the cap out.
all the wheel nuts by turning it counterclockwise. Do not remove the wheel nuts yet.
{ WARNING
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.
Chevrolet Colorado Owner Manual - 2011
Black plate (73,1)
Vehicle Care
10-73
Front Position
Front Position
Rear Position
4. Position the jack (A) under the
vehicle as shown for the front or rear locations.
If the flat tire is on the front of the vehicle, position the jack to the rear of the front tire in the pocket off of the frame.
If the flat tire is on the rear, position the jack under the rear axle and get as close as possible to the shock absorber.
5. Make sure the jack head is
positioned so that the rear axle is resting securely between the grooves that are on the jack head.
Chevrolet Colorado Owner Manual - 2011
Black plate (74,1)
10-74
Vehicle Care
6. Turn the wheel wrench
clockwise to raise the vehicle. Raise the vehicle far enough off the ground so there is enough room for the spare tire to fit under the wheel well.
7. Remove all the wheel nuts and
the flat tire.
{ WARNING
Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, a cloth or a paper towel can be used, however, use a scraper or wire brush later to remove all rust or dirt.
8. Remove any rust or dirt from the
wheel bolts, mounting surfaces and spare wheel. Install the spare tire.
9.
{ WARNING
Never use oil or grease on bolts or nuts because the nuts might come loose. The vehicle's wheel could fall off, causing a crash.
Chevrolet Colorado Owner Manual - 2011
Black plate (75,1)
Vehicle Care
10-75
11. Turn the wheel wrench
counterclockwise to lower the vehicle. Lower the jack completely.
{ WARNING
Wheel nuts that are improperly or incorrectly tightened can cause the wheels to become loose or come off. The wheel nuts should be tightened with a torque wrench to the proper torque specification after replacing. Follow the torque specification supplied by the aftermarket manufacturer when using accessory locking wheel nuts. See Capacities and Specifications on page 12‑2 for original equipment wheel nut torque specifications.
10. 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 wheel wrench to tighten the nuts until the wheel is held against the hub.
Front Position
Rear Position
Chevrolet Colorado Owner Manual - 2011
Black plate (76,1)
10-76
Vehicle Care
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 Capacities and Specifications on page 12‑2 for the wheel nut torque specification.
wheel. Always stow the wheel with the valve stem pointing down and have the wheel/tire repaired as soon as possible. Store the tire under the rear of the vehicle in the spare tire carrier. 1. Put the tire on the ground at the rear of the vehicle with the valve stem pointed down.
When you reinstall the regular wheel and tire, you must also reinstall the center cap. Place the cap on the wheel and tap it into place until it seats flush with the wheel. The cap only goes on one way. Be sure to line up the tab on the center cap with the indentation on the wheel. Storing a Flat or Spare Tire and Tools
{ WARNING
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.
12. Tighten the wheel nuts firmly in
a crisscross sequence as shown by turning the wheel wrench clockwise.
Notice: Storing an aluminum wheel with a flat tire under your vehicle for an extended period of time or with the valve stem pointing up can damage the
2. Tilt the retainer downward and
through the center wheel opening. Make sure the retainer is fully seated across the underside of the wheel.
Chevrolet Colorado Owner Manual - 2011
Black plate (77,1)
3. Assemble the wheel wrench, the jack handle extensions, and the jack handle as shown.
4.
Insert the chiseled end of the jack handle at a slight angle through the hole in the rear bumper and into the funnel-shaped guide.
Vehicle Care
10-77
5. Turn the wheel wrench
clockwise to raise the tire part way up. Make sure the retainer is seated in the wheel opening and the valve stem is pointed down. Continue raising the tire, watch to make sure it does not get caught on anything on the underbody. If the tire does get caught, loosen two or three turns and push and pull the tire and then retighten. Repeat this procedure as many times as needed to ensure proper stowage.
6. When the tire is properly seated
to the underbody, continue turning the wheel wrench clockwise until you hear two clicks or feel it skip twice. You cannot overtighten the cable.
Chevrolet Colorado Owner Manual - 2011
Black plate (78,1)
10-78
Vehicle Care
3. Reinstall the wing nut to secure
3. Lower the jack (A) all the way
the bag to the vehicle.
To store the jack and wheel blocks:
Regular/Extended Cab
and insert the jack into the bracket.
4. Raise the jack by turning the
handle clockwise to secure the jack within the bracket.
7. Make sure the tire is stored securely. Push, pull (A), and then try to turn (B) the tire. If the tire moves, check to make sure the tire valve stem is pointing down, then use the wheel wrench to loosen and then tighten the cable.
To store the tools: 1. Return the tools to the
storage bag.
2. Attach the storage bag to the
floor under the front passenger seat.
A. Jack B. Wheel Blocks C. Wing Nut 1. 2. Reinstall the wing nut (C) by
Install the wheel blocks (B) first.
turning it clockwise to secure the wheel blocks to the vehicle.
5. Put the cover in position and
insert and tighten the wing nut to secure it.
Chevrolet Colorado Owner Manual - 2011
Black plate (79,1)
Crew Cab
A. Jack B. Wheel Blocks C. Wing Nut 1. Attach the wheel blocks (B) to
the jack (A) with the wheel block retainer and the wing nut (C). 2. Reinstall the jack and wheel
block assembly in the mounting bracket. Be sure to position the holes in the base of the jack onto the pins in the mounting bracket.
3. Turn the handle to raise the jack
until it is secure, but do not overtighten the jack in the bracket.
Secondary Latch System Your vehicle has an underbody‐ mounted tire hoist assembly that has a secondary latch system. It is designed to stop the spare tire from suddenly falling off your vehicle. For the secondary latch to work, the spare must be installed with the valve stem pointing down. See “Storing a Flat or Spare Tire and Tools” under Tire Changing on page 10‑68.
{ WARNING
