2016 Chevrolet Colorado Owners Manual

fuel, and cargo. The Certification/Tire label may also show the maximum weights for the front and rear axles, called Gross Axle Weight Rating (GAWR). To find out the actual loads on the front and rear axles, weigh the vehicle at a weigh station. Your dealer can help with this. Be sure to spread the load equally on both sides of the centerline.

{ Warning

In the case of a sudden stop or collision, things carried in the bed of your truck could shift forward and come into the passenger area, injuring you and others. If you put things in the bed of your truck, you should make sure they are properly secured.

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{ Warning

Do not load the vehicle any heavier than the Gross Vehicle Weight Rating (GVWR), or either the maximum front or rear Gross Axle Weight Rating (GAWR). This can cause systems to break and change the way the vehicle handles. This could cause loss of control and a crash. Overloading can also reduce stopping distance, damage the tires, and shorten the life of the vehicle.

Caution

Overloading the vehicle may cause damage. Repairs would not be covered by the vehicle warranty. Do not overload the vehicle.

Using heavier suspension components to get added durability might not change the weight ratings. Ask your dealer to help load the vehicle the right way.

{ Warning

Things you put inside the vehicle can strike and injure people in a sudden stop or turn, or in a crash.

. Put things in the cargo

area of the vehicle. Try to spread the weight evenly.

. Never stack heavier

things, like suitcases, inside the vehicle so that some of them are above the tops of the seats.

. Do not leave an

unsecured child restraint in the vehicle.

(Continued)

Driving and Operating

209

Warning (Continued)

. When you carry

something inside the vehicle, secure it whenever you can. . Do not leave a seat

folded down unless you need to.

There is also important loading information for off-road driving in this manual. See “Loading the Vehicle for Off-Road Driving“ under Off-Road Driving 0 197

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Two-Tiered Loading Depending on the model of the pickup, an upper load platform can be created by positioning three or four 5 cm (2 in) by 15 cm (6 in) wooden planks across the width of the pickup box. The planks must be inserted in the pickup box depressions.

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Driving and Operating

When using this upper load platform, be sure the load is securely tied down to prevent it from shifting. The load's center of gravity should be positioned in a zone over the rear axle. The zone is located in the area between the front of each wheel well and the rear of each wheel well. The center of gravity height must not extend above the top of the pickup box flareboard. Any load that extends beyond the vehicle's taillamp area must be properly marked according to local laws and regulations. Remember not to exceed the Gross Axle Weight Rating (GAWR) of the front or rear axle.

Add-On Equipment When carrying removable items, a limit on how many people carried inside the vehicle may

be necessary. Be sure to weigh the vehicle before buying and installing the new equipment.

Caution

Overloading the vehicle may cause damage. Repairs would not be covered by the vehicle warranty. Do not overload the vehicle.

Remember not to exceed the Gross Axle Weight Rating (GAWR) of the front or rear axle.

* Equipment Ladder Rack and Cargo Cross Toolbox and Cargo Side Boxes and Cargo

Maximum Weight 340 kg (750 lb)

181 kg (400 lb)

113 kg per side (250 lb per side)

Maximum Weight

* Equipment * The combined weight for all rail-mounted equipment should not exceed 454 kg (1,000 lb).

Loading Points

1. Primary Load Points 2. Secondary Load Areas 3. GM Approved Accessory

Mounting Points

Structural members (1) and (2) are included in the pickup box design. Additional accessories should use these load points. Depending on the

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accessory design, use a spacer under the accessory at the load points to remove gap. The holes for GM approved accessories (3) are not intended for aftermarket equipment. See www.gmupfitter.com for additional pickup box load bearing structural information.

Truck-Camper Loading Information The vehicle was neither designed nor intended to carry a slide-in camper.

Caution

Adding a slide-in camper or similar equipment to the vehicle can damage it, and the repairs would not be covered by the vehicle warranty. Do not install a slide-in camper or similar equipment on the vehicle.

Starting and Operating

New Vehicle Break-In

Caution

The vehicle does not need an elaborate break-in. But it will perform better in the long run if you follow these guidelines:

. Keep the vehicle speed at

88 km/h (55 mph) or less for the first 805 km (500 mi). . Do not drive at any one

constant speed, fast or slow, for the first 805 km (500 mi). Do not make full-throttle starts. Avoid downshifting to brake or slow the vehicle.

. Avoid making hard stops for

the first 322 km (200 mi) or so. During this time the new brake linings are not yet broken in. Hard stops with new linings can mean

(Continued)

Driving and Operating

211

Caution (Continued)

premature wear and earlier replacement. Follow this breaking-in guideline every time you get new brake linings.

. Do not tow a trailer during

for the trailer towing

break-in. See Trailer Towing 0 251
capabilities of the vehicle and more information.

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Following break-in, engine speed and load can be gradually increased.

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Driving and Operating

Ignition Positions

The ignition switch has four different positions. To shift out of P (Park), the ignition must be in ON/RUN or ACC/ ACCESSORY and the regular brake pedal must be applied. 0 (STOPPING THE ENGINE/LOCK/ OFF) : When the vehicle is stopped, turn the ignition switch to LOCK/ OFF to turn the engine off. Retained Accessory Power (RAP) will remain active. See Retained Accessory Power (RAP) 0 214

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This position locks the ignition and steering wheel. It also locks the transmission on automatic transmission vehicles. The key can be removed in LOCK/OFF. The steering can bind with the wheels turned off center. If this happens, move the steering wheel from right to left while turning the key to ACC/ACCESSORY. If this does not work, then the vehicle needs service. Do not turn the engine off when the vehicle is moving. This will cause a loss of power assist in the brake and steering systems and disable the airbags. If the vehicle must be shut off in an emergency: 1. Brake using a firm and steady

pressure. Do not pump the brakes repeatedly. This may deplete power assist, requiring increased brake pedal force.

2. Shift the vehicle to N (Neutral).

This can be done while the vehicle is moving. After shifting to N (Neutral), continue to

firmly apply the brakes and steer the vehicle to a safe location.

3. Come to a complete stop. Shift

to P (Park) with an automatic transmission, or Neutral with a manual transmission. Turn the ignition to LOCK/OFF.

4. Set the parking brake. See

Parking Brake 0 233
{ Warning

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Turning off the vehicle while moving may cause loss of power assist in the brake and steering systems and disable the airbags. While driving, only shut the vehicle off in an emergency.

If the vehicle cannot be pulled over, and must be shut off while driving, turn the ignition to ACC/ ACCESSORY. On vehicles with an automatic transmission, the shift lever must be in P (Park) to turn the ignition switch to LOCK/OFF.

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Caution

Using a tool to force the key to turn in the ignition could cause damage to the switch or break the key. Use the correct key, make sure it is all the way in, and turn it only with your hand. If the key cannot be turned by hand, see your dealer.

1 (ACC/ACCESSORY) : This position lets things like the radio and the windshield wipers operate while the engine is off. It also unlocks the steering wheel. Use this position if the vehicle must be pushed or towed. 2 (ON/RUN) : This position can be used to operate the electrical accessories and to display some instrument cluster warning and indicator lights. This position can also be used for service and diagnostics, and to verify the proper operation of the malfunction indicator lamp as may be required for emission inspection purposes. The switch stays in this position

when the engine is running. The transmission is also unlocked in this position on automatic transmission vehicles. If the key is left in the ACC/ ACCESSORY or ON/RUN position with the engine off, the battery could be drained. The vehicle may not start if the battery is allowed to drain for an extended period of time. 3 (START) : This is the position that starts the engine. When the engine starts, release the key. The ignition switch returns to ON/RUN for driving. A warning tone will sound when the driver door is opened, the ignition is in ACC/ACCESSORY or LOCK/ OFF, and the key is in the ignition.

Starting the Engine If the vehicle has a diesel engine, see the Duramax diesel supplement.

Driving and Operating

213

Caution

If you add electrical parts or accessories, you could change the way the engine operates. Any resulting damage would not be covered by the vehicle warranty. See Add-On Electrical Equipment 0 257

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Place the transmission in the proper gear. Automatic Transmission Move the shift lever to P (Park) or N (Neutral). The engine will not start in any other position. To restart the engine when the vehicle is already moving, use N (Neutral) only.

Caution

Do not try to shift to P (Park) if the vehicle is moving. If you do, you could damage the transmission. Shift to P (Park) only when the vehicle is stopped.

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Driving and Operating

Manual Transmission The shift lever should be in Neutral and the parking brake engaged. Hold the clutch pedal down to the floor and start the engine. The vehicle will not start if the clutch pedal is not all the way down. Starting Procedure 1. With your foot off the

accelerator pedal, turn the ignition key to START. When the engine starts, let go of the key. The idle speed will go down as the engine gets warm. Do not race the engine immediately after starting it. Operate the engine and transmission gently to allow the oil to warm up and lubricate all moving parts.

Caution

Cranking the engine for long periods of time, by returning the ignition to the START position immediately after cranking has

(Continued)

Caution (Continued)

ended, can overheat and damage the cranking motor, and drain the battery. Wait at least 15 seconds between each try, to let the cranking motor cool down.

2.

If the engine does not start after five to 10 seconds, especially in very cold weather (below −18 °C or 0 °F), it could be flooded with too much gasoline. Try pushing the accelerator pedal all the way to the floor and holding it there while holding the key in START for up to 15 seconds. Wait at least 15 seconds between each try, to allow the cranking motor to cool down. When the engine starts, let go of the key and accelerator. If the vehicle starts briefly but then stops again, do the same thing. This clears the extra gasoline from the engine. Do not race the engine immediately after starting it. Operate the engine and

transmission gently until the oil warms up and lubricates all moving parts.

Retained Accessory Power (RAP) The following vehicle accessories can be used for up to 10 minutes after the engine is turned off: . Audio System . Power Windows . OnStar System (if equipped) These features work when the key is in ON/RUN or ACC/ ACCESSORY. Once the key is turned from ON/RUN to LOCK/OFF, the windows continue to work up to 10 minutes or until any door is opened. The radio continues to work for up to 10 minutes or until the driver door is opened.

Accessory Power Outlets (APOs) The vehicle may have APOs in several locations. See Power Outlets 0 105

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Driving and Operating

215

The APOs in the console or center seat position are powered by RAP. They will continue to work for up to 10 minutes after the key is turned from ON/RUN to LOCK/OFF, or until the driver door is opened. The APOs on the center stack come from the factory powered directly from the vehicle battery, and supply accessory power at all times, regardless of ignition key position. If electronic items are left plugged into these APOs for long periods of time with the vehicle off, the vehicle battery could be drained. The vehicle may not start if the battery is allowed to drain for an extended period of time.

Engine Coolant Heater If the vehicle has a diesel engine, see the Duramax diesel supplement.

Heater Cord Near Coolant Surge Tank, 2.5L L4 Engine Shown, 3.6L

V6 Engine Similar

Heater Cord Near Engine Air

Cleaner, 2.5L L4 Engine Shown,

3.6L V6 Engine Similar The engine heater can provide easier starting and better fuel economy during engine warm-up in cold weather conditions at or below −18 °C (0 °F). Vehicles with an engine heater should be plugged in at least four hours before starting. An internal thermostat in the plug-end of the cord may exist, which will prevent engine coolant heater operation at temperatures above −18 °C (0 °F).

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Driving and Operating

To Use the Engine Coolant Heater 1. Turn off the engine. 2. Open the hood and unwrap the

electrical cord. The cord is secured near the coolant surge tank or to the engine air cleaner. Carefully remove the cord. Check the heater cord for damage. If it is damaged, do not use it. See your dealer for a replacement. Inspect the cord for damage yearly.

3. Plug the cord into a normal, grounded 110-volt AC outlet.

{ Warning

Improper use of the heater cord or an extension cord can damage the cord and may result in overheating and fire.

. Plug the cord into a

three-prong electrical utility receptacle that is protected

(Continued)

Warning (Continued)

Warning (Continued)

by a ground fault detection function. An ungrounded outlet could cause an electric shock.

. Use a weatherproof,

heavy-duty, 15 amp-rated extension cord if needed. Failure to use the recommended extension cord in good operating condition, or using a damaged heater or extension cord, could make it overheat and cause a fire, property damage, electric shock, and injury.

. Do not operate the vehicle

with the heater cord permanently attached to the (Continued)

vehicle. Possible heater cord and thermostat damage could occur.

. While in use, do not let the

heater cord touch vehicle parts or sharp edges. Never close the hood on the heater cord.

. Before starting the vehicle,

unplug the cord, reattach the cover to the plug, and securely fasten the cord. Keep the cord away from any moving parts.

4. Before starting the engine, be

sure to unplug and store the cord as it was before to keep it away from moving engine parts. If you do not, it could be damaged.

The length of time the heater should remain plugged in depends on several factors. Ask a dealer in the area where you will be parking the vehicle for the best advice on this.

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Shifting Into Park { Warning

It can be dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground, use the steps that follow. With four-wheel drive, if the transfer case is in N (Neutral), the vehicle will be free to roll, even if the shift lever is in P (Park). Be sure the transfer case is in a drive gear. If towing a trailer, see Driving Characteristics and Towing Tips 0 249

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1. Hold the brake pedal down, then set the parking brake. See Parking Brake 0 233

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2. Hold the button on the shift

lever and push the lever toward the front of the vehicle into P (Park).

3. Be sure the transfer case (if

equipped) is in a drive gear — not in N (Neutral).

4. Turn the ignition key to

LOCK/OFF.

5. Remove the key and take it

with you. If you can leave the vehicle with the ignition key in your hand, the vehicle is in P (Park).

Leaving the Vehicle with the Engine Running

{ Warning

It can be dangerous to leave the vehicle with the engine running. The vehicle could move suddenly if the shift lever is not fully in P (Park) with the parking brake firmly set.

(Continued)

Driving and Operating

217

Warning (Continued)

If you have four-wheel drive and the transfer case is in N (Neutral), the vehicle will be free to roll, even if the shift lever is in P (Park). So be sure the transfer case is in a drive gear — not in N (Neutral). And, if you leave the vehicle with the engine running, it could overheat and even catch fire. You or others could be injured. Do not leave the vehicle with the engine running unless you have to.

If you have to leave the vehicle with the engine running, be sure the vehicle is in P (Park) and the parking brake is firmly set before you leave it. After you move the shift lever into P (Park), hold the regular brake pedal down. Then, see if you can move the shift lever away from P (Park) without pressing the button on the shift lever. If you can, it means that the shift lever was not fully locked into P (Park).

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Driving and Operating

Torque Lock If you are parking on a hill and you do not shift the transmission into P (Park) properly, the weight of the vehicle may put too much force on the parking pawl in the transmission. You may find it difficult to pull the shift lever out of P (Park). This is called torque lock. To prevent torque lock, set the parking brake and then shift into P (Park) properly before you leave the driver seat. To find out how, see Shifting Into Park 0 217
When you are ready to drive, move the shift lever out of P (Park) before you release the parking brake. If torque lock does occur, you may need to have another vehicle push yours a little uphill to take some of the pressure from the parking pawl in the transmission. You will then be able to pull the shift lever out of P (Park).

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Shifting out of Park This vehicle is equipped with an electronic shift lock release system. The shift lock release is designed to: . Prevent ignition key removal

unless the shift lever is in P (Park).

. Prevent movement of the shift

lever out of P (Park), unless the ignition is in ON/RUN and the regular brake pedal is applied.

To shift out of P (Park): 1. Apply the brake pedal. 2. Press the button on the shift

lever.

3. Move the shift lever to the

desired position.

If you still are unable to shift out of P (Park): 1. Ease the pressure on the shift

lever.

2. While holding down the brake

pedal and pressing the shift lever button, move the shift lever all the way into P (Park).

3. While holding the shift lever

button, move the shift lever to the desired position.

If you are still having a problem shifting, then have the vehicle serviced soon. This vehicle may have the Safety Belt Assurance System, which may prevent the vehicle from shifting out of P (Park). See Safety Belt Messages 0 134

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Parking If the vehicle has a manual transmission, before you get out of the vehicle, move the shift lever into R (Reverse), and firmly apply the parking brake. Once the shift lever has been placed into R (Reverse) with the clutch pedal pressed in, turn the ignition key to LOCK/OFF, remove the key and release the clutch. If you are parking on a hill, or if the vehicle is pulling a trailer, see Driving Characteristics and Towing Tips 0 249

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Parking over Things That Burn

{ Warning

Things that can burn could touch hot exhaust parts under the vehicle and ignite. Do not park over papers, leaves, dry grass, or other things that can burn.

Driving and Operating

219

Warning (Continued)

. There are holes or openings

in the vehicle body from damage or aftermarket modifications that are not completely sealed.

If unusual fumes are detected or if it is suspected that exhaust is coming into the vehicle:

. Drive it only with the

windows completely down. . Have the vehicle repaired

immediately.

Never park the vehicle with the engine running in an enclosed area such as a garage or a building that has no fresh air ventilation.

Engine Exhaust { Warning

Engine exhaust contains carbon monoxide (CO), which cannot be seen or smelled. Exposure to CO can cause unconsciousness and even death. Exhaust may enter the vehicle if:

. The vehicle idles in areas

with poor ventilation (parking garages, tunnels, deep snow that may block underbody airflow or tail pipes).

. The exhaust smells or

sounds strange or different. . The exhaust system leaks

due to corrosion or damage. . The vehicle exhaust system

has been modified, damaged, or improperly repaired.

(Continued)

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Driving and Operating

Automatic Transmission If equipped, there is an electronic shift lever position indicator within the instrument cluster. This display comes on when the ignition key is turned to the ON/RUN position.

Running the Vehicle While Parked It is better not to park with the engine running. If the vehicle is left with the engine running, follow the proper steps to be sure the vehicle will not move. and See Shifting Into Park 0 217
Engine Exhaust 0 219
has a manual transmission, see Parking 0 218
If parking on a hill and pulling a trailer, see Driving Characteristics and Towing Tips 0 249

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. If the vehicle

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P : This position locks the rear wheels. It is the best position to use when starting the engine because the vehicle cannot move easily. When parked on a hill, especially when the vehicle has a heavy load, you might notice an increase in the

effort to shift out of P (Park). See “Torque Lock” under Shifting Into Park 0 217

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{ Warning

It is dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. Do not leave the vehicle when the engine is running. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground, always set the parking brake and move the shift lever to P (Park). See Shifting Into Park 0 217
Driving Characteristics and Towing Tips 0 249

and

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{ Warning

If you have four-wheel drive, the vehicle will be free to roll — even if the shift lever is in P (Park) — if the transfer case is in N (Neutral). So, be sure the transfer case is in a drive gear, Two-Wheel Drive High or Four-Wheel Drive High or Four-Wheel Drive Low — not in N (Neutral). See Shifting Into Park 0 217

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R : Use this gear to back up.

Caution

Shifting to R (Reverse) while the vehicle is moving forward could damage the transmission. The repairs would not be covered by the vehicle warranty. Shift to R (Reverse) only after the vehicle is stopped.

To rock the vehicle back and forth to get out of snow, ice, or sand without damaging the transmission, see If the Vehicle Is Stuck 0 204
N : In this position, the engine does not connect with the wheels. To restart when you are already moving, use N (Neutral) only. Also, use N (Neutral) when the vehicle is being towed.

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{ Warning

Shifting into a drive gear while the engine is running at high speed is dangerous. Unless your foot is firmly on the brake pedal, the vehicle could move very rapidly. You could lose control and hit people or objects. Do not shift into a drive gear while the engine is running at high speed.

Driving and Operating

221

Caution

Shifting out of P (Park) or N (Neutral) with the engine running at high speed may damage the transmission. The repairs would not be covered by the vehicle warranty. Be sure the engine is not running at high speed when shifting the vehicle.

D : This position is for normal driving. It provides the best fuel economy. If you need more power for passing, and you are: . Going less than about 55 km/h (35 mph), push the accelerator pedal about halfway down.

. Going about 55 km/h (35 mph) or

more, push the accelerator all the way down. By doing this, the vehicle shifts down to the next gear and has more power.

D (Drive) can be used when towing a trailer, carrying a heavy load, driving on steep hills, or driving

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Driving and Operating

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off-road. Shift the transmission to a lower gear range selection if the transmission shifts too often. See Manual Mode 0 223
Downshifting the transmission in slippery road conditions could result in skidding. See “Skidding” under Loss of Control 0 196
The vehicle has a shift stabilization feature that adjusts the transmission shifting to the current driving conditions in order to reduce rapid upshifts and downshifts. This shift stabilization feature is designed to determine, before making an upshift, if the engine is able to maintain vehicle speed by analyzing things such as vehicle speed, throttle position, and vehicle load. If the shift stabilization feature determines that a current vehicle speed cannot be maintained, the transmission does not upshift and instead holds the current gear. In some cases, this could appear to be a delayed shift, however the transmission is operating normally.

The transmission uses adaptive shift controls. The adaptive shift control process continually compares key shift parameters to pre-programmed ideal shifts stored in the transmission’s computer. The transmission constantly makes adjustments to improve vehicle performance according to how the vehicle is being used, such as with a heavy load or when the temperature changes. During this adaptive shift control process, shifting might feel different as the transmission determines the best settings. When temperatures are very cold, the transmission's gear shifting could be delayed providing more stable shifts until the engine warms up. Shifts could be more noticeable with a cold transmission. This difference in shifting is normal. M : This position allows selection of a range of gears appropriate for current driving conditions. See Manual Mode 0 223

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Caution

Spinning the tires or holding the vehicle in one place on a hill using only the accelerator pedal may damage the transmission. The repair will not be covered by the vehicle warranty. If you are stuck, do not spin the tires. When stopping on a hill, use the brakes to hold the vehicle in place.

Normal Mode Grade Braking Normal Mode Grade Braking is enabled when the vehicle is started, but is not enabled in Range Selection Mode. It assists in maintaining desired vehicle speeds when driving on downhill grades by using the engine and transmission to slow the vehicle.

Driving and Operating

223

When the shift lever is moved from D (Drive) to M (Manual Mode), a downshift may occur. The gear that the transmission is operating in when the shift lever is moved from D (Drive) to M (Manual Mode) determines if a downshift occurs. See the following chart.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S/Canada/Mexico- 9159327) - 2016 - crc - 8/28/15

Manual Mode

Range Selection Mode

Range Selection Mode helps control the vehicle's transmission and vehicle speed while driving downhill or towing a trailer by letting you select a desired range of gears.

To use this feature: 1. Move the shift lever to

M (Manual Mode).

2. Press the plus/minus button on

the shift lever to select the desired range of gears for current driving conditions.

When the shift lever is moved from D (Drive) to M (Manual Mode), a number displays next to the M, indicating the current transmission range. This number is the highest gear that the transmission will command while operating in M (Manual Mode). All gears below that number are available. As driving conditions change, the transmission can automatically shift to lower gears. For example, when 5 (Fifth) is selected, 1 (First) through 5 (Fifth) gears are automatically shifted by the transmission, but 6 (Sixth) cannot be used until the plus/minus button on the shift lever is used to change to the range.

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Driving and Operating

Gear before shifting from D (Drive) to M (Manual Mode) Range after shifting from D (Drive) to M (Manual Mode)

6th

5th

4th

3rd

2nd

1st

M4

M4

M3

M2

M2

M1

Grade Braking is not available when Range Selection Mode is active. See Tow/Haul Mode 0 224
While using Range Selection Mode, cruise control and the Tow/Haul Mode can be used.

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Caution

Spinning the tires or holding the vehicle in one place on a hill using only the accelerator pedal may damage the transmission. The repair will not be covered by the vehicle warranty. If you are stuck, do not spin the tires. When stopping on a hill, use the brakes to hold the vehicle in place.

Low Traction Mode Low Traction Mode assists in vehicle acceleration when road conditions are slippery, such as with ice or snow. While the vehicle is at a stop, select M2 using Range Selection Mode. This will limit torque to the wheels and help to prevent the tires from spinning.

Tow/Haul Mode If equipped, Tow/Haul Mode adjusts the transmission shift pattern to reduce shift cycling. This provides increased performance, vehicle control, and transmission cooling when driving down steep hills or mountain grades, towing, or hauling heavy loads.

Turn the Tow/Haul Mode on and off by pressing the button on the center stack. When the Tow/Haul Mode is enabled, a light on the instrument cluster will come on. See Tow/Haul Mode Light 0 118
and Hill and Mountain Roads 0 202
Also see “Tow/Haul Mode” under Towing Equipment 0 254
If the vehicle has a diesel engine, the Tow/Haul button activates the exhaust brake system simultaneously. See “Exhaust Brake” in the Duramax diesel supplement.

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Manual Transmission

If equipped with a manual transmission, this is the shift pattern.

Caution

Do not rest your hand on the shift lever while driving. The pressure could cause premature wear in the transmission. The repairs would not be covered by the vehicle warranty.

Caution

Do not rest your foot on the clutch pedal while driving or while stopped. The pressure can cause premature wear in the clutch. The repairs would not be covered by the vehicle warranty.

To operate the manual transmission: 1 (First) : Press the clutch pedal fully to the pedal stop and shift into 1 (First). Then, slowly let up on the clutch pedal as you slowly press down on the accelerator pedal. You can shift into 1 (First) when you are going less than 30 km/h (20 mph). If you have come to a complete stop and it is hard to shift into 1 (First), put the shift lever in Neutral and let up on the clutch. Then press the clutch pedal back down and shift into 1 (First). 2 (Second) : Press the clutch pedal fully to the pedal stop while letting up on the accelerator pedal and

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shift into 2 (Second). Then, slowly let up on the clutch pedal as you press the accelerator pedal. 3 (Third), 4 (Fourth), 5 (Fifth) and 6 (Sixth) : Shift into 3 (Third), 4 (Fourth), 5 (Fifth) and 6 (Sixth) the same way you do for 2 (Second). Slowly let up on the clutch pedal as you press the accelerator pedal. To stop, let up on the accelerator pedal and press the brake pedal. Just before the vehicle stops, press the clutch pedal and the brake pedal, and shift to Neutral. Neutral : Use this position when you start or idle the engine. R (Reverse) : To back up, with the vehicle at a complete stop, press the clutch pedal. Press down on shift lever in the 3–4 Neutral position, then shift into R (Reverse). If it is hard to shift, let the shift lever return to the 3–4 Neutral position and release the clutch pedal. Then follow the steps again to shift into R (Reverse). Slowly let up on the clutch pedal as you press the accelerator pedal.

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Caution

Shift Indicator

This light comes on when an up-shift is recommended for best fuel economy. The number displayed with the arrow indicates the recommended gear.

Shifting to R (Reverse) while the vehicle is moving forward could damage the transmission. The repairs would not be covered by the vehicle warranty. Shift to R (Reverse) only after the vehicle is stopped.

Use R (Reverse), along with the parking brake, for parking the vehicle. Shift Speeds

{ Warning If you skip a gear when downshifting, you could lose control of the vehicle. You could injure yourself or others. Do not shift down more than one gear at a time when downshifting.

Drive Systems

Four-Wheel Drive If equipped, four-wheel drive engages the front axle for extra traction.

Caution

Do not drive on clean, dry pavement in 4 m and 4 n (if equipped) for an extended period of time. These conditions may cause:

. Overheating. . Oil leakage. . Damage to internal and

external components of the front axle.

. Premature wear on the

vehicle’s powertrain.

Driving on clean, dry pavement in four-wheel drive may: . Cause a vibration to be felt in

the steering system.

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. Cause tires to wear faster. . Cause additional driveline noise.

{ Warning

Shifting the transfer case to N (Neutral) can cause the vehicle to roll even if the transmission is in P (Park). You or someone else could be seriously injured. Be sure to set the parking brake before placing the transfer case in N (Neutral). See Parking Brake 0 233

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Caution

Extended high-speed operation in 4 n may damage or shorten the life of the drivetrain.

Engagement noise and bump when shifting between 4 n and 4 m or from N (Neutral), with the engine running, is normal.

Shifting into 4 n will turn Traction Control and StabiliTrak® off. See Traction Control/Electronic Stability Control 0 235
Electronic Transfer Case

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Use the transfer case knob, next to the steering wheel, to shift into and out of four-wheel drive for extra traction. Indicator lights on the knob show which setting the transfer case is in. The N (Neutral) indicator is on the face of the knob. The indicator lights display briefly when the ignition is turned on, and one will stay on. If the lights display momentarily

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227

when the ignition is in ON/RUN, but none stay on, the knob may have been turned while the vehicle was off. To see the indicator, turn the knob to another position so that it matches the actual transfer case setting. If no lights display, take the vehicle to your dealer for service. An indicator light flashes while shifting and until the shift is complete. If the transfer case cannot complete a requested shift, it will return to the last chosen setting. Turn the control back to the previous setting to see the indicator light.

Caution

Shifting the transmission into gear before the requested mode indicator light has stopped flashing could damage the transfer case.

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Driving and Operating

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The settings are: N (Neutral) : Use only when the vehicle needs to be towed. See Recreational Vehicle Towing 0 330
or Towing the Vehicle 0 329
2 m (Two-Wheel Drive High) : Use for driving on most streets and highways. The front axle is not engaged. This setting provides the best fuel economy. 4 n (Four-Wheel Drive Low) : This setting engages the front axle and delivers extra torque. Choose 4 n if driving off-road in deep sand, deep mud, or deep snow, and while climbing or descending steep hills. When engaged, keep vehicle speed below 72 km/h (45 mph). Shifting into 4 n will turn Traction Control and StabiliTrak off. See Traction Control/Electronic Stability Control 0 235
4 m (Four-Wheel Drive High) : Use when extra traction is needed. The front axle engages and helps when driving on snowy or icy roads, and

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when off-roading. The vehicle can be shifted from 2 m to 4 m while the vehicle is moving. Shifting Into 4 m Turn the knob to 4 m at any speed up to 121 km/h (75 mph), except from 4 n. The indicator light will flash while shifting and will remain on the selected setting. Shifting Into 2 m Turn the knob to 2 m at any speed, except when shifting from 4 n. Shifting Into 4 n When 4 n is engaged, vehicle speed should be kept below 72 km/h (45 mph). 1. The ignition must be in ON/

RUN and the vehicle must be stopped or moving less than 5 km/h (3 mph) with the transmission in N (Neutral). It is best for the vehicle to be moving 1.6 to 3.2 km/h (1 to 2 mph).

2. Turn the knob to 4 n. Wait for the 4 n indicator light to stop flashing before shifting the transmission into gear.

If the transmission is in gear and/or moving more than 5 km/h (3 mph), the 4 n indicator light will flash for 30 seconds and not complete the shift. After 30 seconds the transfer case will shift to 4 m. Turn the knob to 4 m to see the indicator. With the vehicle moving less than 5 km/h (3 mph), and the transmission in N (Neutral), attempt the shift again. Shifting Out of 4 n 1. To shift out of 4 n the vehicle must be stopped or moving less than 5 km/h (3 mph) with the transmission in N (Neutral) and the ignition in ON/RUN. It is best for the vehicle to be moving 1.6 to 3.2 km/h (1 to 2 mph).

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2. Turn the knob to 4 m or 2 m.

Wait for the 4 m or 2 m indicator light to stop flashing before shifting the transmission into gear.

If the transmission is in gear and/or moving more than 5 km/h (3 mph), the 4 m or 2 m indicator light will flash for 30 seconds, but will not complete the shift. With the vehicle moving less than 5 km/h (3 mph), and the transmission in N (Neutral), attempt the shift again.

Shifting Into N (Neutral) To shift: 1. Park the vehicle on a level

surface.

2. Set the parking brake and press and hold the brake pedal. See Parking Brake 0 233

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3. Start the vehicle or turn the

ignition to ON/RUN.

4. Shift the transmission to

N (Neutral).

5. Shift the transfer case to 2 m. 6. Turn the transfer case knob

clockwise to N (Neutral) until it stops and hold it there until the N (Neutral) light starts blinking. This will take at least 10 seconds. Then slowly release the dial to the 4 n position. The N (Neutral) light will come on when the transfer case shift to N (Neutral) is complete.

7. With the engine running, verify

that the transfer case is in N (Neutral) by shifting the transmission to R (Reverse), then to D (Drive). There should be no movement of the vehicle while shifting the transmission.

8. Turn the engine off, and the

ignition to ACC/ACCESSORY.

9. Place the transmission shift

lever in P (Park). See Recreational Vehicle Towing 0 330

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10. Turn the ignition to LOCK/OFF.

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229

Shifting Out of N (Neutral) To shift: 1. Set the parking brake and

apply the brake pedal.

2. Turn the ignition to ON/RUN

with the engine off.

3. Shift the transmission to

N (Neutral).

4. Turn the transfer case knob to

2 m. After the transfer case has shifted out of N (Neutral), the N (Neutral) light will go out. 5. Release the parking brake.

Caution

Shifting the transmission into gear before the requested mode indicator light has stopped flashing could damage the transfer case.

6. Start the engine and shift the

transmission to the desired gear.

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Driving and Operating

Automatic Transfer Case

Use the transfer case knob next to the steering wheel to shift into and out of four-wheel drive. Indicator lights display which setting the transfer case is in. N (Neutral) is indicated on the knob. The indicator lights will display briefly when the ignition is turned on and one will stay on. If the lights display momentarily when the ignition is in ON/RUN, but none stay on, the knob may have been turned while the vehicle was off. To see the indicator, turn the knob to another position so that it matches the

actual transfer case setting. If no lights display, take the vehicle to your dealer for service. An indicator light flashes while shifting the transfer case and remains illuminated when the shift is complete. If the transfer case cannot make a requested shift, it will return to the last chosen setting. Turn the knob back to the previous transfer case setting to see the indicator. The settings are: N (Neutral) : Use only when the vehicle needs to be towed. See Recreational Vehicle Towing 0 330
or Towing the Vehicle 0 329
2 m (Two-Wheel Drive High) : Use for driving on most streets and highways. The front axle is not engaged. This setting provides the best fuel economy. AUTO (Automatic Four-Wheel Drive) : Use when road surface traction conditions are variable. When driving in AUTO, the front axle is engaged, and the vehicle's power is sent to the front and rear

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wheels automatically based on driving conditions. This setting provides slightly lower fuel economy than 2 m. Do not use AUTO mode, if equipped, to park on a steep grade with poor traction such as ice, snow, mud, or gravel. In AUTO mode only the rear wheels will hold the vehicle from sliding when parked. If parking on a steep grade, use 4 m to keep all four wheels engaged. 4 m (Four-Wheel Drive High) : This setting engages the front axle. Use this position when extra traction is needed, such as when driving on snowy or icy roads, or when off-roading. 4 n (Four-Wheel Drive Low) : This setting engages the front axle and delivers extra torque. Choose 4 n when driving off-road in deep sand, deep mud, or deep snow, and while climbing or descending steep hills.

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Shifting into 4 n will turn Traction Control and StabiliTrak off. See Traction Control/Electronic Stability Control 0 235
Shifting Into 4 m or AUTO Turn the knob to the 4 m or AUTO position at any speed, except from 4
n. The indicator light will flash while shifting and will remain on when the shift is completed. Shifting Into 2 m Turn the knob to 2 m at any speed, except when shifting from 4 n. The indicator light will flash while shifting and will remain on when the shift is completed. Shifting Into 4 n When 4 n is engaged, keep vehicle speed below 72 km/h (45 mph). To shift into 4 n: 1. The ignition must be in ON/

RUN and the vehicle must be stopped or moving less than 5 km/h (3 mph) with the

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231

Shifting Out of 4 n To shift: 1. The vehicle must be stopped or

moving less than 5 km/h (3 mph) with the transmission in N (Neutral) and the ignition in ON/RUN. It is best for the vehicle to be moving 1.6 to 3.2 km/h (1 to 2 mph). 2. Turn the knob to 4 m, AUTO,

or 2 m. Wait for the 4 m, AUTO, or 2 m indicator light to stop flashing before shifting the transmission into gear.

Caution

Shifting the transmission into gear before the requested mode indicator light has stopped flashing could damage the transfer case.

transmission in N (Neutral). It is best for the vehicle to be moving 1.6 to 3.2 km/h (1 to 2 mph).

2. Turn the knob to 4 n. Wait for the 4 n indicator light to stop flashing before shifting the transmission into gear.

Caution

Shifting the transmission into gear before the requested mode indicator light has stopped flashing could damage the transfer case.

If the transmission is in gear and/or moving more than 5 km/h (3 mph), the 4 n indicator light will flash for 30 seconds and not complete the shift. After 30 seconds the transfer case will shift to 4 m. Turn the knob to 4 m to display the indicator. With the vehicle moving less than 5 km/h (3 mph), and the transmission in N (Neutral), attempt the shift again.

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Driving and Operating

If the transmission is in gear and/or moving more than 5 km/h (3 mph), the 4 m, AUTO, or 2 m indicator light will flash for 30 seconds but will not complete the shift. With the vehicle moving less than 5 km/h (3 mph), and the transmission in N (Neutral), attempt the shift again.

Shifting Into N (Neutral) To shift: 1. Park the vehicle on a level

surface.

2. Set the parking brake and press and hold the brake pedal. See Parking Brake 0 233

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3. Start the vehicle or turn the

ignition to ON/RUN.

4. Shift the transmission to

N (Neutral).

5. Shift the transfer case to 2 m.

6. Turn the transfer case knob

clockwise to N (Neutral) until it stops and hold it there until the N (Neutral) light starts blinking. This will take at least 10 seconds. Then slowly release the dial to the 4 n position. The N (Neutral) light will come on when the transfer case shift to N (Neutral) is complete.

7. With the engine running, verify

that the transfer case is in N (Neutral) by shifting the transmission to R (Reverse), then shift the transmission to D (Drive). There should be no movement of the vehicle while shifting the transmission.

8. Turn the engine off, and the

ignition to ACC/ACCESSORY.

9. Place the transmission shift

lever in P (Park). See Recreational Vehicle Towing 0 330

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10. Turn the ignition to LOCK/OFF.

Shifting Out of N (Neutral) To shift: 1. Set the parking brake and

apply the brake pedal.

2. Turn the ignition to ON/RUN

with the engine off.

3. Shift the transmission to

N (Neutral).

4. Turn the transfer case knob to

the desired setting. After the transfer case has shifted out of N (Neutral), the N (Neutral) light will go out. 5. Release the parking brake. 6. Start the engine and shift the

transmission to the desired gear.

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Brakes

Antilock Brake System (ABS) This vehicle has ABS, an advanced electronic braking system that helps prevent a braking skid. When the vehicle begins to drive away, ABS checks itself. A momentary motor or clicking noise might be heard while this test is going on, and it might even be noticed that the brake pedal moves a little. This is normal.

If there is a problem with ABS, this warning light stays on. See Antilock Brake System (ABS) Warning Light 0 118

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If driving safely on a wet road and it becomes necessary to slam on the brakes and continue braking to avoid a sudden obstacle, a computer senses the wheels are slowing down. If one of the wheels is about to stop rolling, the computer will separately work the brakes at each wheel. ABS can change the brake pressure to each wheel, as required, faster than any driver could. This can help you steer around the obstacle while braking hard. As the brakes are applied, the computer keeps receiving updates on wheel speed and controls braking pressure accordingly. Remember: ABS does not change the time needed to get a foot up to the brake pedal or always decrease stopping distance. If you get too close to the vehicle in front of you, there will not be enough time to apply the brakes if that vehicle suddenly slows or stops. Always leave enough room up ahead to stop, even with ABS.

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233

Using ABS Do not pump the brakes. Just hold the brake pedal down firmly and let ABS work. You may hear the ABS pump or motor operating and feel the brake pedal pulsate. This is normal. Braking in Emergencies ABS allows you to steer and brake at the same time. In many emergencies, steering can help more than even the very best braking.

Parking Brake

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Driving and Operating

Set the parking brake by holding the regular brake pedal down, then pushing down the parking brake pedal. If the ignition is on, the brake system warning light will come on. See Brake System Warning Light 0 117

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Caution

Driving with the parking brake on can overheat the brake system and cause premature wear or damage to brake system parts. Make sure that the parking brake is fully released and the brake warning light is off before driving.

To release the parking brake, hold the regular brake pedal down, then push down momentarily on the parking brake pedal until you feel the pedal release. Slowly pull your foot up off the parking brake pedal. If the parking brake is not released when you begin to drive, the brake

system warning light will flash and a chime will sound warning you that the parking brake is still on. If you are towing a trailer and are parking on a hill, see Driving Characteristics and Towing Tips 0 249

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Brake Assist The Brake Assist feature is designed to assist the driver in stopping or decreasing vehicle speed in emergency driving conditions. This feature uses the stability system hydraulic brake control module to supplement the power brake system under conditions where the driver has quickly and forcefully applied the brake pedal in an attempt to quickly stop or slow down the vehicle. The stability system hydraulic brake control module increases brake pressure at each corner of the vehicle until the ABS activates.

Minor brake pedal pulsation or pedal movement during this time is normal and the driver should continue to apply the brake pedal as the driving situation dictates. The Brake Assist feature will automatically disengage when the brake pedal is released or brake pedal pressure is quickly decreased.

Hill Start Assist (HSA) This vehicle has an HSA feature, which may be useful when the vehicle is stopped on a grade sufficient enough to activate HSA. This feature is designed to prevent the vehicle from rolling, either forward or rearward, during vehicle drive off. After the driver completely stops and holds the vehicle in a complete standstill on a grade, HSA will be automatically activated.

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During the transition period between when the driver releases the brake pedal and starts to accelerate to drive off on a grade, HSA holds the braking pressure for a maximum of two seconds to ensure that there is no rolling. The brakes will automatically release when the accelerator pedal is applied within the two-second window. It will not activate if the vehicle is in a drive gear and facing downhill, or if the vehicle is facing uphill and in R (Reverse).

Ride Control Systems

Traction Control/ Electronic Stability Control

System Operation The vehicle has a Traction Control System (TCS) and StabiliTrak®, an electronic stability control system. These systems help limit wheel slip and assist the driver in maintaining control, especially on slippery road conditions. TCS activates if it senses that any of the drive wheels are spinning or beginning to lose traction. When this happens, TCS applies the brakes to the spinning wheels and reduces engine power to limit wheel spin. StabiliTrak activates when the vehicle senses a difference between the intended path and the direction the vehicle is actually traveling. StabiliTrak selectively applies braking pressure to any one of the

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vehicle wheel brakes to assist the driver in keeping the vehicle on the intended path. If cruise control is being used and traction control or StabiliTrak begins to limit wheel spin, cruise control will disengage. Cruise control may be turned back on when road conditions allow. Both systems come on automatically when the vehicle is started and begins to move. The systems may be heard or felt while they are operating or while performing diagnostic checks. This is normal and does not mean there is a problem with the vehicle. It is recommended to leave both systems on for normal driving conditions, but it may be necessary to turn TCS off if the vehicle gets stuck in sand, mud, ice, or snow. See If the Vehicle Is Stuck 0 204
and “Turning the Systems Off and On” later in this section. When the transfer case (if equipped) is in Four-Wheel Drive Low, the stability system is automatically disabled, and g comes on in the

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Driving and Operating

instrument cluster. Both traction control and StabiliTrak are automatically disabled in this condition.

The indicator light for both systems is in the instrument cluster. This light will: . Flash when TCS is limiting

wheel spin.

. Flash when StabiliTrak is

activated.

. Turn on and stay on when either

system is not working.

If either system fails to turn on or to activate, a message displays in the Driver Information Center (DIC), and d comes on and stays on to indicate that the system is inactive and is not assisting the driver in

maintaining control. The vehicle is safe to drive, but driving should be adjusted accordingly. If d comes on and stays on: 1. Stop the vehicle. 2. Turn the engine off and wait