2011 Chevrolet Tahoe Owners Manual

Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011

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System Warning Light,” and “ABS Brake System Warning Light” in the owner manual. This message may also come on when you are towing a trailer. See “Trailer Brakes” under Trailer Towing on page 9‑16 for more information.

Door Ajar Messages

HOOD OPEN If the hood is not fully closed or there is a problem with the hood switch, this message will be displayed. Close the hood to clear the message. If the HOOD OPEN message continues to be displayed after verifying the hood is closed, you should have the hood switch serviced. Failure to service the hood switch properly can result in an Auto Start condition. Auto Stops will be disabled when this message is displayed. If the vehicle is in auto stop mode when this message appears, the engine will instantly start.

Instruments and Controls

5-13

Engine Oil Messages

Transmission Messages

SERVICE 4 WHEEL DRIVE This message may display if a problem occurs with the four-wheel-drive system. If this message appears, stop as soon as possible and turn off the vehicle. Make sure the key is in the LOCK/ OFF position for at least one minute and then restart the vehicle and check for the message on the DIC display. If the message is still displayed or appears again when you begin driving, the four-wheel-drive system needs service. See your dealer.

OIL PRESSURE LOW STOP ENGINE If engine oil pressure is low, this message will be displayed on the DIC. Stop the vehicle as soon as safely possible and do not operate it until the cause of the low oil pressure has been corrected. Check your oil level as soon as possible and have your vehicle serviced. See “Engine Oil” in the owner manual.

Service Vehicle Messages

SERVICE HYBRID SYSTEM If this message is displayed on the DIC, the vehicle may continue to operate, but you need to have it serviced as soon as possible. SERVICE POWER STEERING This message displays if a problem has been detected with the electric power steering. Have your vehicle serviced by your dealer immediately.

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5-14

Instruments and Controls

2 NOTES

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Infotainment System

Introduction

Introduction . . . . . . . . . . . . . . . . . . . 7-1

Introduction For vehicles with a navigation radio system, see the Navigation System manual for more information.

Infotainment System 7-1

To view the hybrid screen, press the MENU button on the radio. The hybrid screen displays when entering the Configuration Menu. The display shows: . Auto Stop . Battery Charging . Engine Idle

2‐Wheel and 4‐Wheel Drive Modes for: ‐ Engine Power ‐ Battery Power ‐ Hybrid Power

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7-2

Infotainment System

2 NOTES

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Climate Controls

Climate Control Systems

Climate Control Systems . . . . . . 8-1

Climate Controls

8-1

At mild temperatures, select a warmer air conditioner temperature or turn the air conditioner off to get maximum fuel economy. Continuous air conditioner use can cause the vehicle to Auto Start more frequently. During hot weather, driving with the windows closed and the air conditioner set to Auto mode, will result in better Hybrid system performance. Some noise may be heard occasionally from the compressor, especially when air conditioning use is high and the engine has turned off.

Climate Control Systems For more information on the vehicle's climate control system, see “Climate Control System” in the owner manual. Electric Air Conditioning Compressor This hybrid vehicle has an electrically powered air conditioning compressor. This allows for continuous air conditioning operation and passenger comfort, even while the hybrid engine cycles on and off. When operating the climate control system, select the AUTO mode and the desired temperature setting. The climate control system automatically adjusts the fan speed and airflow direction. The climate control system continues to adjust the climate control settings chosen for best use of electrical power.

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8-2

Climate Controls

2 NOTES

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Driving and Operating

Driving Information

Automatic Transmission

Automatic Transmission . . . . . . . 9-7
Manual Mode . . . . . . . . . . . . . . . . . 9-9

Drive Systems

Four-Wheel Drive . . . . . . . . . . . . 9-10

Steering . . . . . . . . . . . . . . . . . . . . . . . 9-1

Brakes

Starting and Operating

Starting the Vehicle . . . . . . . . . . . 9-2
Engine Coolant Heater . . . . . . . . 9-4
Shifting Into Park . . . . . . . . . . . . . 9-4

Engine Exhaust

Running the Vehicle While

Parked . . . . . . . . . . . . . . . . . . . . . . 9-6

Regenerative Braking . . . . . . . . 9-15

Towing

General Towing

Information . . . . . . . . . . . . . . . . . 9-16
Trailer Towing . . . . . . . . . . . . . . . . 9-16
Towing Equipment . . . . . . . . . . . 9-17

Driving and Operating

9-1

Driving Information

Steering This vehicle has On-Demand Electric-Assist Power Steering instead of conventional full-time hydraulic power steering. It uses electricity supplied by the same battery which is re-charged by the regenerative braking system. Because the system is On-Demand Electric-Assist, energy is used only when the steering wheel is turned, or when the steering gear is used to help isolate the forces of rough roads. This system does not use power steering fluid, making it maintenance-free.

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9-2

Driving and Operating

Starting and Operating

Starting the Vehicle { WARNING

Exiting the vehicle, without first shifting into P (Park), may cause the vehicle to move, and you or others can be seriously injured. Because the vehicle has the Automatic Engine Start/Stop feature, the vehicle’s engine might seem to be shut off when you come to a complete stop. However, once the brake pedal is released, the vehicle can move. The vehicle’s engine can also restart at any time. Shift to P (Park) and turn the ignition to LOCK/OFF, before exiting the vehicle.

Start the engine as you would any other engine. See “Starting the Engine” in the owner manual for more information on starting. If pulling a trailer with trailer brakes, see Towing Equipment on page 9‑17 for more information. Auto Stop The vehicle has an Auto Stop feature. After a successful engine start, the engine may turn off and operate in the Auto Stop mode. Some of the vehicle conditions that allow the engine to stop running and enter the Auto Stop mode are:

Ignition switch is in the ON/RUN position. The hood is closed. The gear selector is in P (Park), R (Reverse), N (Neutral) or D (Drive). The hybrid battery is at an acceptable state of charge.

The hybrid battery voltage, temperature or power limits are not exceeded. In very hot conditions, Auto Stop may be unavailable until the hybrid battery has cooled. The engine is at operating temperature. The vehicle may enter Auto Stop after a remote vehicle start.

With your foot off the brake and the vehicle on level ground, the hybrid drive motor may cause the vehicle to roll slowly forward, even when the engine is in Auto Stop. Keep your foot firmly on the brake pedal until you are ready for the vehicle to move. Engine OFF and AUTO STOP modes are indicated on the tachometer display. When the tachometer needle indicates OFF, the engine is not running and will remain off until the ignition key is placed in the START position or a remote vehicle start is performed.

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When the tachometer needle indicates AUTO STOP, the hybrid system is on, the engine is not running, but may Auto Start at any time without notice. See Tachometer on page 5‑4 for more information. A chime will sound if the driver door is opened while in Auto Stop as a reminder that the ignition switch is not in the LOCK/OFF position. Always turn the ignition switch to LOCK/OFF and remove the key from the ignition switch when exiting the vehicle. Auto Start The vehicle also has an Auto Start feature. The engine will remain off while in Auto Stop mode until vehicle conditions require the engine to run. The near-instant starting of the engine from Auto Stop mode is called Auto Start.

Some of the vehicle conditions that may cause the engine to Auto Start are:

The hood is opened. The gear selector is in M (Manual Mode). The hybrid battery state of charge is too low. The hybrid battery voltage, temperature or power limits are exceeded.

. A remote vehicle start has been

requested. The engine is not at operating temperature.

. Acceleration demands require

the use of the engine.

Driving and Operating

9-3

EV Mode The vehicle also has an Electric Vehicle (EV) mode which uses only the electric motor to move the vehicle. With light acceleration, the vehicle will drive in EV mode. EV mode is unavailable when the vehicle is out of fuel. If increased acceleration is required, or the vehicle reaches approximately 40 km/h (30 mph), the engine will start automatically. The engine shuts off at speeds below 40 km/h (25 mph) unless the transmission is in M (Manual Mode) or Auto Stop is disabled. During heavy acceleration, both the engine and hybrid electric motors supply power. A sensation similar to a transmission gear change can be felt as the transmission changes modes. Engine RPM may remain above 4,000 RPM for a longer period during hard acceleration.

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9-4

Driving and Operating

Engine Coolant Heater The engine coolant 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). Using the Engine Coolant Heater 1. Turn off the engine. 2. Open the hood and unwrap the

electrical cord. The cord is secured to a wiring harness between the engine and the Hybrid Auxiliary Underhood Fuse Block with a clip. Carefully remove the wire tie which secures the electrical cord. Do not cut the electrical cord.

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

{ WARNING Plugging the cord into an ungrounded outlet could cause an electrical shock. Also, the wrong kind of extension cord could overheat and cause a fire. You could be seriously injured. Plug the cord into a properly grounded three-prong 110-volt AC outlet. If the cord will not reach, use a heavy-duty three-prong extension cord rated for at least 15 amps.

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.

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). So, be sure the transfer case is in a drive

(Continued)

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WARNING (Continued)

gear — not in N (Neutral). If you are pulling a trailer, see “Driving Characteristics and Towing Tips” in the owner manual.

1. Hold the brake pedal down, then

set the parking brake. See “Parking Brake” in the owner manual.

2. Move the shift lever into the

P (Park) position by pulling the shift lever toward you and moving it up as far as it will go.

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. 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.

Driving and Operating

9-5

If you have to leave the vehicle with the engine running, be sure your 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 first pulling it toward you. If you can, it means that the shift lever was not fully locked into P (Park). Torque Lock If parking on a hill and the transmission not shifted 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 on page 9‑4.

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9-6

Driving and Operating

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, then you will be able to pull the shift lever out of P (Park).

Engine Exhaust

Running the Vehicle While Parked It is better not to park with the engine running. But if you ever have to, here are some things to know.

{ WARNING

Exiting the vehicle, without first shifting into P (Park), may cause the vehicle to move, and you or others can be seriously injured. Because the vehicle has the Automatic Engine Start/Stop feature, the vehicle’s engine might seem to be shut off when you come to a complete stop.

(Continued)

WARNING (Continued)

However, once the brake pedal is released, the vehicle can move. The vehicle’s engine can also restart at any time. Shift to P (Park) and turn the ignition to LOCK/OFF, before exiting the vehicle.

Follow the proper steps to be sure the vehicle will not move. See Shifting Into Park on page 9‑4. If pulling a trailer, see “Driving Characteristics and Towing Tips” in the owner manual.

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Driving and Operating

9-7

{ 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 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 Neutral. See Shifting Into Park on page 9‑4.

Automatic Transmission The vehicle has an electronic shift position indicator within the instrument panel cluster. There are several different positions for the shift lever.

See “Range Selection Mode” in this section. P (Park): This position locks the rear wheels. It is the best position to use when you start the engine because the vehicle cannot move easily.

When parked on a hill, especially when the vehicle has a heavy load, you may notice an increase in the effort to shift out of P (Park). See Shifting Into Park on page 9‑4.

{ 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 unless you have to. 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 on page 9‑4. If you are pulling a trailer, see “Driving Characteristics and Towing Tips” in the owner manual.

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9-8

Driving and Operating

R (Reverse): Use this gear to back up. Notice: 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” in the owner manual. N (Neutral): In this position, the engine and transmission are not connected with the wheels. To restart the engine when the vehicle is already moving, use N (Neutral) only.

{ 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.

Notice: 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 (Drive): 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.

D (Drive) or M (Manual Mode) can be used when towing a trailer, carrying a heavy load, driving on steep hills, or for off-road driving. You may want to shift the transmission to a lower gear selection if the transmission shifts too often. Downshifting the transmission in slippery road conditions could result in skidding. See “Loss of Control” in the owner manual. When temperatures are very cold, the transmission's gear shifting may be delayed, providing more stable shifts until the engine warms up.

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not upshift. In some cases, this may appear to be a delayed shift, however the transmission is operating normally.

Manual Mode

Range Selection Mode

The Range Selection Mode controls the vehicle's transmission.

Driving and Operating

9-9

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

M (Manual Mode).

2. Press the plus/minus button to

upshift or downshift selecting the desired range of gears.

A number displays next to the M, indicating the current gear that has been selected. The number displayed in the gear indicator is the highest gear that can be used. The vehicle can automatically shift to lower gears as it adjusts to driving conditions. When 3 (Third) is selected, 1 (First) through 3 (Third) gears are automatically shifted by the vehicle, but 4 (Fourth) cannot be used until it is selected. The Range Selection Mode controls the vehicle and engine speed while driving down a hill or towing a trailer, by allowing you to select a desired range of gears.

Shifts may be more noticeable with a cold transmission. This difference in shifting is normal. M (Manual Mode): This position lets drivers select the range of gears appropriate for current driving conditions. If the vehicle has this feature, see Manual Mode on page 9‑9. Notice: 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. The vehicle has a shift stabilization feature that adjusts the transmission shifting to the current driving conditions to reduce rapid upshifts and downshifts. If the shift stabilization feature determines that a current vehicle speed cannot be maintained, the transmission does

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9-10

Driving and Operating

Drive Systems

Four-Wheel Drive If the vehicle has four-wheel drive, you can send the engine's driving power to all four wheels for extra traction. Read the following before using four-wheel drive. Notice: Driving on clean, dry pavement in Four-Wheel Drive High or Four-Wheel Drive Low for an extended period of time may cause premature wear on the vehicle's powertrain. Do not drive on clean, dry pavement in Four-Wheel Drive High or Four-Wheel Drive Low for extended periods of time.

While driving on clean dry pavement and during tight turns, you may experience a vibration in the steering system. The vehicle has StabiliTrak. Shifting into Four-Wheel Drive Low will turn Traction Control and StabiliTrak off. See “StabiliTrak System” in the owner manual. Front Axle The front axle engages and disengages automatically when you shift the transfer case. Some delay for the axle to engage or disengage is normal.

When you move the shift lever into M, the transmission will default to M4. In this gear range, effective engine braking occurs at speeds above 72 km/h (45 mph). Pushing the minus (−) button on the shift lever reduces the gear range. In the M3 gear range, effective engine braking occurs at speeds above 56 km/h (35 mph). In the M2 gear range, effective engine braking occurs at speeds above 40 km/h (25 mph). In the M1 gear range, effective engine braking occurs at speeds above 16 km/h (10 mph). When operating in M (Manual Mode), Auto Stop is disabled. For better vehicle efficiency, operate the vehicle in D (Drive) not M (Manual Mode). Cruise control can be used while using the Range Selection Mode.

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Automatic Transfer Case

The transfer case knob is located to the left of the instrument panel cluster. Use this dial to shift into and out of four-wheel drive. You can choose among five driving settings: Indicator lights in the switches show you which setting you are in. The indicator lights will come on briefly when you turn on the ignition and the last chosen setting will stay on.

Driving and Operating

9-11

If the lights do not come on, you should take the vehicle to your dealer for service. An indicator light will flash while shifting. It will stay on when the shift is completed. If for some reason the transfer case cannot make a requested shift, it will return to the last chosen setting. 2 m (Two-Wheel Drive High): This setting is used for driving in most street and highway situations. The front axle is not engaged in two-wheel drive. This setting also provides the best fuel economy. AUTO (Automatic Four-Wheel Drive): This setting is ideal for use when road surface traction conditions are variable. When driving your vehicle in AUTO, the front axle is engaged, but the vehicle's power is primarily sent to the rear wheels. When the vehicle's software determines a need for more traction, the system will transfer more power to the front

wheels. Driving in this mode results in slightly lower fuel economy than Two-Wheel Drive High. 4 m (Four-Wheel Drive High): Use the four-wheel high position when you need extra traction, such as on snowy or icy roads or in most off-road situations. This setting also engages the front axle to help drive the vehicle. This is the best setting to use when plowing snow. 4 n (Four-Wheel Drive Low) : This setting also engages the front axle and delivers extra torque. You may never need this setting. It sends maximum power to all four wheels. You might choose Four-Wheel Drive Low if you are driving off-road in deep sand, deep mud, deep snow, and while climbing or descending steep hills.

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9-12

Driving and Operating

The vehicle has StabiliTrak. Shifting into Four-Wheel-Drive Low will turn Traction Control and StabiliTrak off. See “StabiliTrak System” in the owner manual.

If the SERVICE 4 WHEEL DRIVE message stays on, you should take the vehicle to your dealer for service. See Transmission Messages on page 5‑13.

{ 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” in the owner manual for more information.

N (Neutral): Shift the vehicle's transfer case to N (Neutral) only when towing the vehicle. See “Recreational Vehicle Towing” or “Towing Your Vehicle” in the owner manual.

Shifting Into Four-Wheel Drive High or AUTO (Automatic Four-Wheel Drive) Turn the knob to the Four-Wheel High or AUTO position. This can be done at any speed, except when shifting from Four-Wheel Drive Low. The indicator light will flash while shifting. It will remain on when the shift is completed.

Shifting Into Two-Wheel Drive High Turn the knob to the Two-Wheel High position. This can be done at any speed, except when shifting from Four-Wheel Drive Low. See “Shifting Out of Four-Wheel Drive Low” in this section for more information.

Shifting Into Four-Wheel Drive Low When Four-Wheel Low is engaged, vehicle speed should be kept below 64 km/h (40 mph). Extended high-speed operation in 4L may damage or shorten the life of the drivetrain. To shift to the Four-Wheel Drive Low position, 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). The preferred method for shifting into Four-Wheel Drive Low is to have the vehicle moving 1.6 to 3.2 km/h (1 to 2 mph). Turn the knob to the Four-Wheel Drive Low position. You must wait for the Four-Wheel Drive Low indicator light to stop flashing and remain on before shifting the transmission into gear.

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Driving and Operating

9-13

damaging the vehicle, always wait for the Four-Wheel Drive Low indicator light to stop flashing before shifting the transmission into gear. The vehicle may have significant engagement noise and bump when shifting between Four-Wheel Drive Low and Four-Wheel Drive High ranges or from N (Neutral) while the engine is running. If the knob is turned to the Four-Wheel Drive High, AUTO, or Two-Wheel Drive High switch position when the vehicle is in gear and/or moving, the Four-Wheel Drive High, AUTO or Two-Wheel Drive High indicator light will flash for 30 seconds but will not complete the shift unless the vehicle is moving less than 5 km/h (3 mph) and the transmission is in N (Neutral).

Shifting Out of Four-Wheel Drive Low To shift from Four-Wheel Drive Low to Four-Wheel Drive High, AUTO, or Two-Wheel Drive High, 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. The preferred method for shifting out of Four-Wheel Drive Low is to have your vehicle moving 1.6 to 3.2 km/h (1 to 2 mph). Turn the knob to the Four-Wheel Drive High, AUTO, or Two-Wheel Drive High position. You must wait for the Four-Wheel Drive High, AUTO, or Two-Wheel Drive High indicator light to stop flashing and remain on before shifting the transmission into gear. Notice: Shifting the transmission into gear before the Four-Wheel Drive Low indicator light has stopped flashing could damage the transfer case. To help avoid

Notice: Shifting the transmission into gear before the Four-Wheel Drive Low indicator light has stopped flashing could damage the transfer case. To help avoid damaging the vehicle, always wait for the Four-Wheel Drive Low indicator light to stop flashing before shifting the transmission into gear. The vehicle may have significant engagement noise and bump when shifting between Four-Wheel Drive Low and Four-Wheel Drive High ranges or from N (Neutral) while the engine is running. If the knob is turned to the Four-Wheel Drive Low position when the vehicle is in gear and/or moving, the Four-Wheel Drive Low indicator light will flash for 30 seconds and not complete the shift unless the vehicle is moving less than 5 km/h (3 mph) and the transmission is in N (Neutral). After 30 seconds the transfer case will shift to Four-Wheel Drive High mode.

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9-14

Driving and Operating

Shifting into Neutral To shift the transfer case into N (Neutral): 1. Make sure the vehicle is parked

so that it will not roll.

2. Set the parking brake and apply

the regular brake pedal. See “Parking Brake” in the owner manual.

3. Start the vehicle or turn the

ignition to ON/RUN.

4. Put the transmission in

N (Neutral).

5. Shift the transfer case to

Two-Wheel Drive High.

6. Turn the transfer case dial

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 Four‐Wheel Drive Low position. The N (Neutral) light will come on when the transfer case shift to N (Neutral) is complete.

7.

If the engine is running, verify that the transfer case is in N (Neutral) by shifting the transmission to R (Reverse) for one second, then shift the transmission to D (Drive) for one second.

8. Turn the ignition to ACC/

ACCESSORY, which will turn the engine off.

9. Place the transmission shift

lever in P (Park).

10. Release the parking brake prior

to moving the vehicle.

11. Turn the ignition to LOCK/OFF.

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

the regular brake pedal.

2. Turn the ignition to ON/RUN with

the engine off, and shift the transmission to N (Neutral).

3. Turn the transfer case dial to the

desired transfer case shift position (Two-Wheel Drive High, Four-Wheel Drive High, AUTO). After the transfer case has shifted out of N (Neutral), the N (Neutral) light will go out.

4. Release the parking brake prior

to moving the vehicle.

Notice: Shifting the transmission into gear before the Four-Wheel Drive Low indicator light has stopped flashing could damage the transfer case. To help avoid damaging the vehicle, always wait for the Four-Wheel Drive Low indicator light to stop flashing before shifting the transmission into gear. 5. Start the engine and shift the

transmission to the desired position.

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Excessively shifting the transfer case into or out of the different modes may cause the transfer case to enter the shift protection mode. This will protect the transfer case from possible damage and will only allow the transfer case to respond to one shift per 10 seconds. The transfer case may stay in this mode for up to three minutes.

Brakes

Regenerative Braking Regenerative braking is a hybrid technology that enables the electric drive motor to operate as a generator when coasting or braking. Energy from the moving vehicle recharges the hybrid battery. The hydraulic disc brakes work with the regenerative braking to insure effective braking, such as when a high braking demand is requested.

Driving and Operating

9-15

The braking system is computer controlled and blends the regenerative braking with the conventional hydraulic disc brakes to meet any requirements for deceleration. The controller interprets the braking request and uses regenerative braking, conventional hydraulic braking or a combination of both as necessary. Because the controller applies the hydraulic brakes through its high pressure accumulator, you may occasionally hear the motor driven pump when it recharges the system. This is normal. In the event of a controller problem, the brake pedal may be harder to push and the stopping distance may be longer.

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9-16

Driving and Operating

Towing

General Towing Information Consult your dealer or a professional towing service if the disabled vehicle needs to be towed.

Trailer Towing For more information, see “Towing a Trailer” in the owner manual.

Weight of the Trailer How heavy can a trailer safely be? It depends on how the rig is used. For example, speed, altitude, road grades, outside temperature and how much the vehicle is used to pull a trailer are all important. It can depend on any special equipment on the vehicle, and the amount of tongue weight the vehicle can carry.

Maximum trailer weight is calculated assuming only the driver is in the tow vehicle and it has all the required trailering equipment. The weight of additional optional equipment, passengers and cargo in the tow vehicle must be subtracted from the maximum trailer weight. Use the following charts to determine how much the vehicle can weigh, based upon the vehicle model and options.

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Driving and Operating

9-17

Axle Ratio

Maximum Trailer Weight

Vehicle 2WD 6.0L V8 — Tahoe/Yukon 2WD 6.0L V8 — Yukon Denali 4WD 6.0L V8 — Tahoe/Yukon 4WD 6.0L V8 — Yukon Denali *The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversions. The GCWR for the vehicle should not be exceeded.

5 443 kg (12,000 lbs) 5 443 kg (12,000 lbs) 5 443 kg (12,000 lbs) 5 443 kg (12,000 lbs)

2 812 kg (6,200 lbs) 2 722 kg (6,000 lbs) 2 676 kg (5,900 lbs) 2 586 kg (5,700 lbs)

3.08
3.08
3.08
3.08

GCWR*

Towing Equipment

Trailer Brakes If a trailer is being towed that has trailer brakes and the trailer brakes are manually applied while driving slower than 40 km/h (25 mph), the vehicle may go into auto stop mode even if the brakes are not being pressed. Using the trailer brake system manually can make the hybrid vehicle perform as if the brake pedal in the vehicle is being pressed. The trailer brake operation check will still work. If the trailer

brakes are manually applied for an extended period of time, the SERVICE BRAKE SYSTEM message comes on in the Driver Information Center. The message goes off after the trailer brakes have been released. No other action is necessary. For more information, see “Towing Equipment” in the owner manual.

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9-18

Driving and Operating

2 NOTES

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Vehicle Care

10-1

Vehicle Care

Vehicle Checks Doing Your Own

Service Work . . . . . . . . . . . . . . . 10-2

Engine Compartment

Overview . . . . . . . . . . . . . . . . . . . 10-4

Automatic Transmission

Fluid . . . . . . . . . . . . . . . . . . . . . . . 10-6

Drive Motor/Generator Control

Module (DMCM) Coolant Surge Tank Pressure Cap . . . . . . . . . . . . . . 10-9

Drive Motor/Generator Control

Module (DMCM) Cooling System . . . . . . . . . . . . . . . . . . . . . 10-9
Power Steering Fluid . . . . . . . 10-12
Battery . . . . . . . . . . . . . . . . . . . . . 10-12

Bulb Replacement

Bulb Replacement . . . . . . . . . . 10-13
Taillamps, Turn Signal,

Stoplamps, and Back-Up Lamps . . . . . . . . . . . . . . . . . . . . 10-13
Replacement Bulbs . . . . . . . . . 10-14

Electrical System

High Voltage Devices and

Wiring . . . . . . . . . . . . . . . . . . . . . 10-14

Fuses and Circuit

Breakers . . . . . . . . . . . . . . . . . . 10-15

Engine Compartment Fuse

Block . . . . . . . . . . . . . . . . . . . . . 10-15

Wheels and Tires

Tire Pressure . . . . . . . . . . . . . . . 10-17
Tire Pressure Monitor

Operation . . . . . . . . . . . . . . . . . 10-18
Tire Rotation . . . . . . . . . . . . . . . 10-21
Tire Chains . . . . . . . . . . . . . . . . . 10-22

If a Tire Goes Flat . . . . . . . . . . 10-22
Tire Sealant and

Compressor Kit . . . . . . . . . . . 10-24

Storing the Tire Sealant and

Compressor Kit . . . . . . . . . . . 10-31

Jump Starting

Jump Starting . . . . . . . . . . . . . . 10-32

Towing

Recreational Vehicle

Towing . . . . . . . . . . . . . . . . . . . . 10-36

Appearance Care

Exterior Care . . . . . . . . . . . . . . . 10-40

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10-2

Vehicle Care

Vehicle Checks

Doing Your Own Service Work

{ WARNING

Never try to do your own service on hybrid components. You can be injured and the vehicle can be damaged if you try to do your own service work. Service and repair of these hybrid components should only be performed by a trained service technician with the proper knowledge and tools.

{ WARNING You can be injured and the vehicle could be damaged if you try to do service work on a vehicle without knowing enough about it.

. Be sure you have sufficient knowledge, experience, the proper replacement parts, and tools before attempting any vehicle maintenance task.

. Be sure to use the proper

nuts, bolts, and other fasteners. English and metric fasteners can be easily confused. If the wrong fasteners are used, parts can later break or fall off. You could be hurt.

If doing some of your own service work, use the proper service manual. It tells you much more about how to service the vehicle than this manual can. To order the proper service manual, see “Service Publications Ordering Information” in the owner manual. This vehicle has an airbag system. Before attempting to do your own service work, see “Airbag System Check” in the owner manual. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See “Maintenance Records” in the owner manual.

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Vehicle Care

10-3

2 NOTES

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10-4

Vehicle Care

Engine Compartment Overview

6.0 L V8 Engine

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A. See “Engine Air Cleaner/Filter”

E. Brake Fluid Reservoir. See

in the owner manual.

“Brakes” in the owner manual.

B. Drive Motor/Generator Control

F. See “Engine Compartment Fuse

Module (DMCM). See Drive Motor/Generator Control Module (DMCM) Cooling System on page 10‑9.

C. Engine Oil Dipstick (Out of

View). See “Engine Oil” in the owner manual.

D. Automatic Transmission Fluid

Dipstick. See Automatic Transmission Fluid on page 10‑6.

Block” in the owner manual.

G. Windshield Washer Fluid

Reservoir. See “Washer Fluid” in the owner manual.

H. Hybrid Auxiliary Fuse Block

(Out of View). See Engine Compartment Fuse Block on page 10‑15.

Vehicle Care

10-5

I. DMCM Coolant Surge Tank

Pressure Cap. See Drive Motor/ Generator Control Module (DMCM) Coolant Surge Tank Pressure Cap on page 10‑9. J. Coolant Surge Tank Pressure Cap. See “Engine Coolant” in the owner manual.

K. Engine Oil Fill Cap (Out of

View). See “Engine Oil” in the owner manual.

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10-6

Vehicle Care

Automatic Transmission Fluid

When to Check and Change Automatic Transmission Fluid It is usually not necessary to check the transmission fluid level. The only reason for fluid loss is a transmission leak or overheating the transmission. If a small leak is suspected, then use the following checking procedures to check the fluid level. However, if there is a large leak, then it may be necessary to have the vehicle towed to a dealer service department and have it repaired before driving the vehicle further. Notice: Use of the incorrect automatic transmission fluid may damage the vehicle, and the damages may not be covered by the vehicle warranty. Always use the automatic transmission fluid listed in Recommended Fluids and Lubricants on page 11‑1.

Change the fluid and filter at the scheduled maintenance intervals listed in Scheduled Maintenance. Be sure to use the transmission fluid listed in Recommended Fluids and Lubricants on page 11‑1. How to Check Automatic Transmission Fluid Notice: Too much or too little fluid can damage the transmission. Too much can mean that some of the fluid could come out and fall on hot engine parts or exhaust system parts, starting a fire. Too little fluid could cause the transmission to overheat. Be sure to get an accurate reading if checking the transmission fluid. Before checking the fluid level, prepare the vehicle as follows: 1. Start the engine and park the

vehicle on a level surface. Keep the engine running.

2. Apply the parking brake and

place the shift lever in P (Park).

3. With your foot on the brake pedal, move the shift lever through each gear range, pausing for about three seconds in each range. Then, move the shift lever back to P (Park).

4. Allow the engine to idle

(500–800 RPM) for at least one minute. Slowly release the brake pedal.

5. Keep the engine running and press the Trip/Fuel button or trip odometer reset stem until TRANS TEMP (Transmission Temperature) displays on the Driver Information Center (DIC).

6. Using the TRANS TEMP

reading, determine and perform the appropriate check procedure. If the TRANS TEMP reading is not within the required temperature ranges, allow the vehicle to cool, or operate the vehicle until the appropriate transmission fluid temperature is reached.

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Vehicle Care

10-7

Cold Check Procedure Use this procedure only as a reference to determine if the transmission has enough fluid to be operated safely until a hot check procedure can be made. The hot check procedure is the most accurate method to check the fluid level. Perform the hot check procedure at the first opportunity. Use this cold check procedure to check fluid level when the transmission temperature is between 24°C and 34°C (75°F and 93°F).

1. Locate the transmission dipstick

at the rear of the engine compartment, on the passenger side of the vehicle. See Engine Compartment Overview on page 10‑4 for more information.

3.

2. Pull out the dipstick and wipe it with a clean rag or paper towel. Install the dipstick by pushing it back in all the way, wait three seconds, and then pull it back out again.

4. Check both sides of the dipstick and read the lower level. Repeat the check procedure to verify the reading.

5.

If the fluid level is below the COLD check band, add only enough fluid as necessary to bring the level into the COLD band. It does not take much fluid, generally less than 0.5 Liter (1 Pint). Do not overfill.

6. Perform a hot check at the

first opportunity after the transmission reaches a normal operating temperature between 60°C and 75°C (140°F and 167°F). If the fluid level is in the acceptable range, push the dipstick back in all the way.

7.

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10-8

Vehicle Care

Hot Check Procedure Use this procedure to check the transmission fluid level when the transmission fluid temperature is between 60°C and 75°C (140°F and 167°F). The hot check is the most accurate method to check the fluid level. The hot check should be performed at the first opportunity in order to verify the cold check. The fluid level rises as fluid temperature increases, so it is important to ensure the transmission temperature is within range.

See Engine Compartment Overview on page 10‑4 for more information.

3.

2. Pull out the dipstick and wipe it with a clean rag or paper towel. Install the dipstick by pushing it back in all the way, wait three seconds, and then pull it back out again.

4. Check both sides of the dipstick and read the lower level. Repeat the check procedure to verify the reading.

necessary to bring the level into the HOT band. If the fluid level is low, add only enough fluid to bring the level into the HOT band. It does not take much fluid, generally less than 0.5 Liter (1 Pint). Do not overfill. If the fluid level is in the acceptable range, push the dipstick back in all the way.

6.

Consistency of Readings Always check the fluid level at least twice using the procedure described previously. Consistency (repeatable readings) is important to maintaining proper fluid level. If readings are still inconsistent, contact your dealer.

1. Locate the transmission dipstick

at the rear of the engine compartment, on the passenger side of the vehicle.

5. Safe operating level is within the

HOT cross hatch band on the dipstick. If the fluid level is not within the HOT band, and the transmission temperature is between 60°C and 75°C (140°F and 167°F), add or drain fluid as

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Vehicle Care

10-9

Drive Motor/Generator Control Module (DMCM) Coolant Surge Tank Pressure Cap

See Engine Compartment Overview on page 10‑4 for more information on location. The Drive Motor/Generator Control Module (DMCM) coolant surge tank pressure cap must be fully installed on the hybrid coolant surge tank. Notice: If the pressure cap is not tightly installed, coolant loss and possible damage to the Drive Motor/Generator Control Module (DMCM) may occur. Be sure the cap is properly and tightly secured.

Drive Motor/Generator Control Module (DMCM) Cooling System In addition to the regular cooling system, the vehicle also has a cooling system for the DMCM system. This system is serviced differently than the vehicle's main cooling system. The DMCM cooling system includes the DMCM coolant surge tank, DMCM surge tank pressure cap, DMCM cooling pumps, hybrid cooling radiator and the Drive Motor/Generator Control Module (DMCM). The DMCM cooling system uses a 50/50
pre-mixed DEX-COOL® coolant and deionized water available at your dealer. See “Engine Coolant” and “Cooling System” in the owner manual for more information.

When it is safe to lift the hood: A. Drive Motor/Generator Control

Module (DMCM)

B. Engine Coolant Surge Tank

Pressure Cap

C. DMCM Coolant Surge Tank/ Engine Coolant Surge Tank

D. DMCM Cooling Hoses

(Out of View)

E. DMCM Coolant Tank

Pressure Cap

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10-10

Vehicle Care

If the coolant inside the DMCM coolant surge tank is boiling, do not do anything else until it cools down.

Notice: Running the engine when there is a leak in the hybrid cooling system can cause the hybrid cooling system to lose all coolant and can damage the system. Get any leak fixed before you drive the vehicle or run the engine. How to Add Coolant to the DMCM Coolant Surge Tank

If coolant is visible, add pre‐mixed DEX-COOL coolant, available at your dealer, at the DMCM coolant surge tank, but be sure the DMCM cooling system, including the DMCM coolant surge tank pressure cap, is cool before you do it. Use the procedure following.

{ WARNING

The coolant level should be at or above the FULL COLD mark with the vehicle parked on a level surface. If it is not, there might be a leak at the DMCM cooler core, DMCM pressure cap, DMCM cooler hoses, DMCM cooling pump or somewhere else in the DMCM cooling system.

If no problem has been found yet, check to see if coolant is visible in the DMCM coolant surge tank.

Steam and scalding liquids from a hot cooling system can blow out and burn you badly. They are under pressure, and if you turn the coolant surge tank pressure cap — even a little — they can come out at high speed. Never turn the cap when the cooling system, including the coolant surge tank pressure cap, is hot. Wait for the cooling system and coolant surge tank pressure cap to cool if you ever have to turn the pressure cap.

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Vehicle Care

10-11

Notice: Using coolant other than a pre‐mixed DEX-COOL, available at your dealer, may damage your vehicle. Any repairs would not be covered by your warranty. Always use a pre‐mixed DEX-COOL (silicate-free) coolant in your vehicle.

{ WARNING

You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol and it will burn if the engine parts are hot enough. Do not spill coolant on a hot engine.

If the DMCM coolant is empty, the vehicle must be serviced by your dealer and a special fill procedure must be followed. Notice: Attempting to fill the DMCM cooling surge tank yourself when the fluid level is empty can damage your vehicle. Your vehicle must be serviced.

1. Park the vehicle on a level

surface and turn the vehicle off. Remove the DMCM coolant surge tank pressure cap when the DMCM cooling system, including the DMCM coolant surge tank pressure cap and DMCM cooling hoses, are no longer hot. Turn the DMCM coolant surge tank pressure cap slowly counterclockwise (left) about one full turn. Wait 30 seconds.

2. Then keep turning the DMCM

coolant surge tank pressure cap slowly, and remove it.

3. Add the pre‐mixed DEX‐COOL, available at your dealer, to the DMCM coolant surge tank until the level reaches the FULL COLD mark.

4. Turn the ignition to ON/RUN

without starting the engine. The hybrid cooling pumps will run and any trapped air will purge to the surge tank.

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10-12

Vehicle Care

5. Add the pre‐mixed DEX‐COOL, available at your dealer, until the coolant level is maintained at the FULL COLD mark. This should take no longer than two minutes of hybrid cooling pump operation. If the level cannot be kept at the FULL COLD level, the vehicle may need service. See your dealer.

6. Then replace the DMCM coolant

surge tank pressure cap. Be sure the pressure cap is hand-tight and fully seated.

Notice: Using tap water, cooling system sealers or conditioners in an attempt to stop coolant leaks can damage the DMCM and engine cooling systems. Never use tap water, cooling system sealers or conditioners in your cooling system.

Power Steering Fluid The vehicle has electric power steering and does not use power steering fluid.

Battery This vehicle has a standard 12‐volt battery and a high voltage hybrid battery. Refer to the replacement number on the original battery label when a new standard 12‐volt battery is needed.

Only a trained service technician with the proper knowledge and tools should inspect, test, or replace the hybrid battery. See your dealer if the hybrid battery needs service. The dealer has information on how to recycle the hybrid battery. There is also information available at http://www.recyclemybattery.com. If an airbag inflates or the vehicle has been in a crash, the vehicle's sensing system might command the automatic hybrid battery disconnect to open. See Replacing Airbag System Parts After a Crash on page 3‑2 for more information.

{ DANGER

Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.

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Vehicle Storage

{ WARNING

Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 10‑32 for tips on working around a battery without getting hurt.

Infrequent Usage: Remove the 12‐volt battery black, negative (−) cable from the battery to keep the battery from running down. Extended Storage: Remove the 12‐volt battery black, negative (−) cable from the battery or use a battery trickle charger. Remember to reconnect the battery when ready to drive the vehicle.

Vehicle Care

10-13

A. Taillamp/Stoplamp B. Back-up Lamp C. Turn Signal Lamp D. Sidemarker Lamp If the taillamp/stoplamp (A) needs to be replaced, see your dealer. 1. Open the liftgate. See “Power

Liftgate” in the owner's manual.

Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑14. For any bulb‐changing procedure not listed in this section, contact your dealer.

Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps

2. Remove the two screws from the

taillamp assembly.

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10-14

Vehicle Care

3. Pull the taillamp assembly

rearward disengaging the two outer pins on the taillamp assembly from the vehicle.

4. Turn the bulb socket

counterclockwise to remove it from the taillamp assembly. 5. Pull the old bulb straight out

from the bulb socket.

6. Press a new bulb into the bulb

socket and insert it into the taillamp assembly. Turn the bulb socket clockwise into the taillamp assembly until it clicks. 7. Reinstall the taillamp assembly. When reinstalling, make sure to line up the pins on the taillamp assembly with the vehicle. If this is not done the taillamp assembly cannot be correctly installed.

Replacement Bulbs

Electrical System

Exterior Lamp

Back-up Lamp and Rear Turn Signal Lamp Sidemarker Lamp

Bulb

Number

3156

194

For replacement bulbs not listed here, contact your dealer.

High Voltage Devices and Wiring

{ WARNING

Exposure to high voltage can cause shock, burns, and even death. The high voltage systems in your vehicle can only be serviced by technicians with special training. High voltage devices are identified by labels. Do not remove, open, take apart, or modify these devices. High voltage cable or wiring has orange covering. Do not probe, tamper with, cut, or modify high voltage cable or wiring.

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Fuses and Circuit Breakers The wiring circuits in the vehicle are protected from short circuits by a combination of fuses, circuit breakers and fusible thermal links. This greatly reduces the chance of fires caused by electrical problems. Be sure you replace a bad fuse with a new one of the identical size and rating.

If you ever have a problem on the road and do not have a spare fuse, you can borrow one that has the same amperage. Just pick some feature of the vehicle that you can get along without, like the radio or cigarette lighter, and use its fuse, if it is the correct amperage. Replace it as soon as you can. The vehicle also has a special fuse in the battery box for the 300-volt batteries. If this fuse has failed and needs to be replaced, the vehicle will be disabled and you will need to have the vehicle repaired by your dealer. Do not attempt to self-service this fuse.

Vehicle Care

10-15

Engine Compartment Fuse Block

Hybrid Auxiliary Engine Compartment Fuse Block The hybrid auxiliary engine compartment fuse block is located in the engine compartment near the front of the vehicle. Lift the cover for access to the fuse/relay block. See Engine Compartment Overview on page 10‑4 for more information on its location. For more information on the main underhood fuse block, see “Engine Compartment Fuse Block” in the owner manual.

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10-16

Vehicle Care

Fuses

Usage

10

J‐Case FAN 1

TRANS PUMP

FAN 2
CAB

HTR PMP

Relays

CAB HTR PUMP COOL PUMP

FAN LOW