2011 Chevrolet Tahoe Owners Manual

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

Drive Motor/Generator

Control Module 2

BECM

Usage

Cooling Fan 1

Auxiliary

Transmission Fluid Pump

Cooling Fan 2

Cab Heater Pump

Usage

Cabin Heater Pump

Coolant Pump

Cooling Fan Low

Speed Relay

Fuses

Usage

Fuses

ACPO (SUV Only)

BECM FAN

ACCM

CAB HTR PMP

Usage EMPTY

COOL PUMP

EPS

Drive Motor/Generator

Control Module 1

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Relays

FAN MID 1

FAN HI

FAN MID 2
FAN

CNTRL

Usage

Cooling Fan Mid 1

Cooling Fan High

Speed Relay

Cooling Fan Mid 2

Cooling Fan Control

Wheels and Tires

Tire Pressure Tires need the correct amount of air pressure to operate effectively. Notice: Do not let anyone tell you that under‐inflation or over‐inflation is all right. It is not. If your tires do not have enough air (under‐inflation), you can get the following:

. Tire overloading and

over-heating which could lead to a blowout.

. Premature or

irregular wear. . Poor handling. . Reduced fuel economy.

Vehicle Care

10-17

If your tires have too much air (over‐inflation), you can get the following:

. Unusual wear. . Poor handling. . Rough ride. . Needless damage from

road hazards.

A vehicle specific Tire and Loading Information label is attached to your vehicle. This label shows your vehicle's original equipment tires and the correct inflation pressures for your tires when they are cold. The recommended cold tire inflation pressure, shown on the label, is the minimum amount of air pressure needed to support your vehicle's maximum load carrying capacity. For additional information regarding how much weight your vehicle can carry, and an example of the Tire and Loading Information label, see “Vehicle Load Limits” in the owner manual. How you load your vehicle

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10-18

Vehicle Care

affects vehicle handling and ride comfort. Never load your vehicle with more weight than it was designed to carry. When to Check Check your tires once a month or more. How to Check Use a good quality pocket-type gauge to check tire pressure. You cannot tell if your tires are properly inflated simply by looking at them. Radial tires may look properly inflated even when they're underinflated. Check the tire's inflation pressure when the tires are cold. Cold means your vehicle has been sitting for at least three hours or driven no more than 1.6 km (1 mile). Remove the valve cap from the tire valve stem. Press the tire gauge firmly onto the valve to get a pressure measurement. If the cold tire inflation pressure matches the recommended pressure on the tire

and loading information label, no further adjustment is necessary. If the pressure is low, add air until you reach the recommended amount. If you overfill the tire, release air by pushing on the metal stem in the center of the tire valve. Recheck the tire pressure with the tire gauge. Be sure to put the valve caps back on the valve stems. They help prevent leaks by keeping out dirt and moisture.

Tire Pressure Monitor Operation This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS is designed to warn the driver when a low tire pressure condition exists. TPMS sensors are mounted onto each tire and wheel assembly. The TPMS sensors monitor the air pressure in the

vehicle's tires and transmit the tire pressure readings to a receiver located in the vehicle.

When a low tire pressure condition is detected, the TPMS will illuminate the low tire pressure warning symbol located on the instrument panel cluster. If the warning light comes on, stop as soon as possible and inflate the tires to the recommended pressure shown on the tire loading information label. See “Vehicle Load Limits” in the owner manual for more information. At the same time a message to check the pressure in a specific tire appears on the Driver Information Center (DIC) display. The low tire pressure warning light and the DIC warning message come on at each ignition cycle until the tires are

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inflated to the correct inflation pressure. Using the DIC, tire pressure levels can be viewed by the driver. For additional information and details about the DIC operation and displays see Driver Information Center (DIC) on page 5‑11. The low tire pressure warning light may come on in cool weather when the vehicle is first started, and then turn off as you start to drive. This could be an early indicator that the air pressure in the tire(s) are getting low and need to be inflated to the proper pressure. A Tire and Loading Information label, attached to your vehicle, shows the size of your vehicle's original equipment tires and the correct inflation pressure for your vehicle's tires when they are cold. See “Vehicle Load Limits” for an example of the Tire and Loading Information label and its location on your vehicle. Also see Tire Pressure on page 10‑17.

Your vehicle's TPMS can warn you about a low tire pressure condition but it does not replace normal tire maintenance. See “Tire Inspection,” “Tire Rotation” and “Tires” in the owner manual for more information. Notice: Tire sealant materials are not all the same. A non-approved tire sealant could damage the Tire Pressure Monitor System (TPMS) sensors. TPMS sensor damage caused by using an incorrect tire sealant is not covered by the vehicle warranty. Always use only the GM approved tire sealant available through your dealer or included in the vehicle. Your vehicle, when new, included a factory‐installed Tire Sealant and Compressor Kit. This kit uses a GM approved liquid tire sealant. See Tire Sealant and Compressor Kit on page 10‑24.

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TPMS Malfunction Light and Message The TPMS will not function properly if one or more of the TPMS sensors are missing or inoperable. When the system detects a malfunction, the low tire warning light flashes for about one minute and then stays on for the remainder of the ignition cycle. A DIC warning message is also displayed. The low tire warning light and DIC warning message come on at each ignition cycle until the problem is corrected. Some of the conditions that can cause the malfunction light and DIC message to come on are:

The TPMS sensor matching process was started but not completed or not completed successfully after rotating the vehicle's tires. The DIC message and TPMS malfunction light should go off once the TPMS sensor matching process is performed successfully. See “TPMS Sensor Matching Process” later in this section.

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Vehicle Care

. One or more TPMS sensors are

missing or damaged. The DIC message and the TPMS malfunction light should go off when the TPMS sensors are installed and the sensor matching process is performed successfully. See your dealer for service.

. Replacement tires or wheels do not match your vehicle's original equipment tires or wheels. Tires and wheels other than those recommended for your vehicle could prevent the TPMS from functioning properly. See “Buying New Tires” in the owner manual.

. Operating electronic devices or being near facilities using radio wave frequencies similar to the TPMS could cause the TPMS sensors to malfunction.

If the TPMS is not functioning it cannot detect or signal a low tire condition. See your dealer for

service if the TPMS malfunction light and DIC message comes on and stays on. TPMS Sensor Matching Process Each TPMS sensor has a unique identification code. Any time you rotate your vehicle's tires or replace one or more of the TPMS sensors, the identification codes will need to be matched to the new tire/wheel position. The sensors are matched to the tire/wheel positions in the following order: driver side front tire, passenger side front tire, passenger side rear tire, and driver side rear tire using a TPMS diagnostic tool. See your dealer for service. The TPMS sensors can also be matched to each tire/wheel position by increasing or decreasing the tire's air pressure. If increasing the tire's air pressure, do not exceed the maximum inflation pressure indicated on the tire's sidewall.

To decrease air-pressure out of a tire you can use the pointed end of the valve cap, a pencil-style air pressure gauge, or a key. You have two minutes to match the first tire/wheel position, and five minutes overall to match all four tire/wheel positions. If it takes longer than two minutes, to match the first tire and wheel, or more than five minutes to match all four tire and wheel positions the matching process stops and you need to start over. The TPMS sensor matching process is outlined below: 1. Set the parking brake. 2. Turn the ignition switch to ON/

RUN with the engine off.

3. Press Q and K on the Remote Keyless Entry (RKE) transmitter at the same time for approximately five seconds. The horn sounds twice to signal the receiver is in relearn mode and

Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011

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TIRE LEARNING ACTIVE message displays on the DIC screen.

4. Start with the driver side

front tire.

5. Remove the valve cap from the

valve cap stem. Activate the TPMS sensor by increasing or decreasing the tire's air pressure for five seconds, or until a horn chirp sounds. The horn chirp, which may take up to 30 seconds to sound, confirms that the sensor identification code has been matched to this tire and wheel position.

6. Proceed to the passenger side

front tire, and repeat the procedure in Step 5.

7. Proceed to the passenger side

rear tire, and repeat the procedure in Step 5.

8. Proceed to the driver side rear

tire, and repeat the procedure in Step 5. The horn sounds two times to indicate the sensor

identification code has been matched to the driver side rear tire, and the TPMS sensor matching process is no longer active. The TIRE LEARNING ACTIVE message on the DIC display screen goes off.

9. Turn the ignition switch to

LOCK/OFF.

10. Set all four tires to the

recommended air pressure level as indicated on the Tire and Loading Information label. 11. Put the valve caps back on the

valve stems.

Tire Rotation Tires should be rotated every 12 000 km (7,500 miles). Any time you notice unusual wear, rotate your tires as soon as possible and check wheel alignment. Also check for damaged tires or wheels. See “When It Is Time for New Tires”

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and “Wheel Replacement” in the owner manual for more information. The purpose of regular rotation is to achieve more uniform wear for all tires on the vehicle. The first rotation is the most important. See “Scheduled Maintenance” in the owner manual.

When rotating your tires, always use the correct rotation pattern shown here.

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Vehicle Care

After the tires have been rotated, adjust the front and rear inflation pressures as shown on the Tire and Loading Information label. See “Vehicle Load Limits” in the owner manual for an example of the label and its location on your vehicle. The Tire Pressure Monitor System (TPMS) sensors will need to be reset after a tire rotation. See “TPMS Sensor Identification Codes” under “Tire Pressure Monitor Operation”. Make certain that all wheel nuts are properly tightened. See “Wheel Nut Torque” under “Capacities and Specifications” in the owner manual. Lightly coat the center of the wheel hub with wheel bearing grease after a wheel change or tire rotation to prevent corrosion or rust build-up. Do not get

grease on the flat wheel mounting surface or on the wheel nuts or bolts.

Tire Chains

{ WARNING

Do not use tire chains. There is not enough clearance. Tire chains used on a vehicle without the proper amount of clearance can cause damage to the brakes, suspension, or other vehicle parts. The area damaged by the tire chains could cause you to lose control of the vehicle and you or others may be injured in a crash. Use another type of traction device only if its manufacturer recommends it for use on the vehicle and tire size combination and road conditions. Follow that manufacturer's instructions. To help avoid

(Continued)

WARNING (Continued)

damage to the vehicle, drive slowly, re‐adjust or remove the device if it is contacting the vehicle, and do not spin the wheels. If you do find traction devices that will fit, install them on the rear tires.

If a Tire Goes Flat Your vehicle has a tire inflator kit. There is no spare tire, no tire changing equipment, and no place to store a tire. It is unusual for a tire to blow out while you are driving, especially if you maintain your tires properly. If air goes out of a tire, it is much more likely to leak out slowly. But, if you should ever have a blow out, here are a few tips about what to expect and what to do: If a front tire fails, the flat tire creates a drag that pulls the vehicle toward that side. Take your foot off

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the accelerator pedal and grip the steering wheel firmly. Steer to maintain lane position, and then gently brake to a stop, well off the road, if possible. A rear blow out, particularly on a curve, acts much like a skid and may require the same correction you would use in a skid. In any rear blow out, remove your foot from the accelerator pedal. Get the vehicle under control by steering the way you want the vehicle to go. It may be very bumpy and noisy, but you can still steer. Gently brake to a stop, well off the road, if possible.

{ WARNING

Driving on a flat tire will cause permanent damage to the tire. Re-inflating a tire after it has been driven on while severely under-inflated or flat may cause a blowout and a serious crash.

(Continued)

WARNING (Continued)

Never attempt to re-inflate a tire that has been driven on while severely under-inflated or flat. Have your dealer or an authorized tire service center repair or replace the flat tire as soon as possible.

If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place and stopping, well off the road, if possible. Then do this: 1. Turn on the hazard warning

flashers.

2. Park your vehicle. Set the

parking brake firmly and put the shift lever in PARK (P).

3. Turn off the engine. Inspect the flat tire. 4.

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If the tire has been separated from the wheel or has damaged sidewalls or large tears that allow rapid air loss, call a tire repair facility. See “Roadside Assistance Program” in the owner manual. If the flat tire is due to a slow leak caused by a nail or other similar road hazard, the tire inflator kit may be used to repair the damaged tire temporarily. The kit uses a liquid tire sealant to seal small punctures in the tread area of the tire. After repairing a tire with the tire inflator kit, take your vehicle to an authorized dealer to have the tire inspected and repaired as soon as possible. The tire sealant is a temporary repair only. See Tire Sealant and Compressor Kit on page 10‑24.

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Vehicle Care

Tire Sealant and Compressor Kit

{ WARNING

Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine exhaust may enter the vehicle. Engine exhaust contains Carbon Monoxide (CO) which cannot be seen or smelled. It can cause unconsciousness and even death. Never run the engine in an enclosed area that has no fresh air ventilation. For more information, see ”Engine Exhaust” in the owner manual.

{ WARNING

Over-inflating a tire could cause the tire to rupture and you or others could be injured. Be sure to read and follow the tire sealant and compressor kit instructions and inflate the tire to its recommended pressure. Do not exceed the recommended pressure.

{ WARNING Storing the tire sealant and compressor kit or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store the tire sealant and compressor kit in its original location.

If this vehicle has a tire sealant and compressor kit, there may not be a spare tire, tire changing equipment, and on some vehicles there may not be a place to store a tire. The tire sealant and compressor can be used to temporarily seal punctures up to 6 mm (¼ inch) in the tread area of the tire. It can also be used to inflate an under inflated tire. If the tire has been separated from the wheel, has damaged sidewalls, or has a large puncture, the tire is too severely damaged for the tire sealant and compressor kit to be effective. See “Roadside Assistance Program” in the owner manual. Read and follow all of the tire sealant and compressor kit instructions.

Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011

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The kit includes:

A. Air Compressor B. Tire Sealant Canister C. Power Plug D. On/Off Button E. Pressure Gauge F. Air Only Hose (Black) G. Sealant/Air Hose (Clear)

Tire Sealant Read and follow the safe handling instructions on the label adhered to the sealant canister. Check the tire sealant expiration date on the sealant canister. The sealant canister should be replaced before its expiration date. Replacement sealant canisters are available at your local dealer. See “Removal and Installation of the Sealant Canister” following. There is only enough sealant to seal one tire. After usage, the sealant canister and sealant/air hose assembly must be replaced. See “Removal and Installation of the Sealant Canister” following.

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10-25

Using the Tire Sealant and Compressor Kit to Temporarily Seal and Inflate a Punctured Tire Follow the directions closely for correct sealant usage.

When using the tire sealant and compressor kit during cold temperatures, warm the kit in a heated environment for five minutes. This will help to inflate the tire faster.

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Vehicle Care

If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on the hazard warning flashers. See If a Tire Goes Flat on page 10‑22 for other important safety warnings. Do not remove any objects that have penetrated the tire. 1. Remove the tire sealant and

compressor kit from its storage location. See Storing the Tire Sealant and Compressor Kit on page 10‑31. Make sure the on/off button (D) is in the off (O) position.

5. Attach the sealant/air hose (G) onto the tire valve stem. Turn it clockwise until it is tight.

6. Plug the power plug (C) into the

accessory power outlet in the vehicle. Unplug all items from other accessory power outlets. See “Power Outlets” in the owner manual. If the vehicle has an accessory power outlet, do not use the cigarette lighter. If the vehicle only has a cigarette lighter, use the cigarette lighter. Do not pinch the power plug cord in the door or window.

2. Unwrap the sealant/air hose (G)

7. Start the vehicle. The vehicle

and the power plug (C).

3. Place the kit on the ground.

Make sure the tire valve stem is positioned close to the ground so the hose will reach it.

4. Remove the valve stem cap from

the flat tire by turning it counterclockwise.

must be running while using the air compressor.

8. Press the on/off (D) button to

turn the tire sealant and compressor kit on. The compressor will inject sealant and air into the tire.

9.

The pressure gauge (E) will initially show a high pressure while the compressor pushes the sealant into the tire. Once the sealant is completely dispersed into the tire, the pressure will quickly drop and start to rise again as the tire inflates with air only. Inflate the tire to the recommended inflation pressure using the pressure gauge (E). The recommended inflation pressure can be found on the Tire and Loading Information label. See Tire Pressure on page 10‑17. The pressure gauge (E) may read higher than the actual tire pressure while the compressor is on. Turn the compressor off to get an accurate pressure reading. The compressor may be turned on/off until the correct pressure is reached.

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Notice: If the recommended pressure cannot be reached after approximately 25 minutes, the vehicle should not be driven farther. The tire is too severely damaged and the tire sealant and compressor kit cannot inflate the tire. Remove the power plug from the accessory power outlet and unscrew the inflating hose from the tire valve. See “Roadside Assistance Program” in the owner manual. 10. Press the on/off button (D) to

turn the tire sealant and compressor kit off. The tire is not sealed and will continue to leak air until the vehicle is driven and the sealant is distributed in the tire, therefore, Steps 11 through 17 must be done immediately after Step 10. Be careful while handling the tire sealant and compressor kit as it could be warm after usage.

11. Unplug the power plug (C) from

the accessory power outlet in the vehicle.

12. Turn the sealant/air hose (G) counterclockwise to remove it from the tire valve stem.

13. Replace the tire valve

17.

stem cap.

14. Replace the sealant/air

hose (G), and the power plug (C) back in their original location.

15.

If the flat tire was able to inflate to the recommended inflation pressure, remove the maximum speed label from the sealant canister (B) and place it in a highly visible location.

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10-27

Do not exceed the speed on this label until the damaged tire is repaired or replaced.

16. Return the equipment to its

original storage location in the vehicle. Immediately drive the vehicle 8 km (5 miles) to distribute the sealant in the tire.

18. Stop at a safe location and

check the tire pressure. Refer to Steps 1 through 11 under “Using the Tire Sealant and Compressor Kit without Sealant to Inflate a Tire (Not Punctured).” If the tire pressure has fallen more than 68 kPa (10 psi) below the recommended inflation pressure, stop driving the vehicle. The tire is too severely damaged and the tire sealant cannot seal the tire. See “Roadside Assistance Program” in the owner manual.

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Vehicle Care

If the tire pressure has not dropped more than 68 kPa (10 psi) from the recommended inflation pressure, inflate the tire to the recommended inflation pressure.

19. Wipe off any sealant from the

wheel, tire or vehicle.

20. Dispose of the used sealant canister (B) and sealant/air hose (G) assembly at a local dealer or in accordance with local state codes and practices.

21. Replace it with a new canister

available from your dealer.

22. After temporarily sealing a tire

using the tire sealant and compressor kit, take the vehicle to an authorized dealer within a 161 km (100 miles) of driving to have the tire repaired or replaced.

Using the Tire Sealant and Compressor Kit without Sealant to Inflate a Tire (Not Punctured) To use the air compressor to inflate a tire with air only and not sealant:

If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on the hazard warning flashers.

See If a Tire Goes Flat on page 10‑22 for other important safety warnings. 1. Remove the tire sealant and

compressor kit from its storage location. See Storing the Tire Sealant and Compressor Kit on page 10‑31.

2. Unlock the air only hose (F) from

the sealant canister (B) by pulling up on the lever.

3. Pull the air only hose (F) from

the sealant canister (B).

4. Remove the power plug (C) from

the air compressor (A).

5. Place the kit on the ground.

Make sure the tire valve stem is positioned close to the ground so the hose will reach it.

6. Remove the tire valve stem cap

by turning it counterclockwise.

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7. Attach the air only hose (F) onto the tire valve stem and press the lever down to secure it.

8. Plug the power plug (C) into the

accessory power outlet in the vehicle. Unplug all items from other accessory power outlets. See “Power Outlets” in the owner manual. If the vehicle has an accessory power outlet, do not use the cigarette lighter. If the vehicle only has a cigarette lighter, use the cigarette lighter. Do not pinch the power plug cord in the door or window.

9. Start the vehicle. The vehicle

must be running while using the air compressor.

10. Press the on/off (D) button to

12. Press the on/off button (D) to

11.

turn the compressor on. The compressor will inflate the tire with air only. Inflate the tire to the recommended inflation pressure using the pressure gauge (E). The recommended inflation pressure can be found on the Tire and Loading Information label. See Tire Pressure on page 10‑17. The pressure gauge (E) may read higher than the actual tire pressure while the compressor is on. Turn the compressor off to get an accurate reading. The compressor may be turned on/ off until the correct pressure is reached.

turn the tire sealant and compressor kit off. Be careful while handling the tire sealant and compressor kit as it could be warm after usage.

13. Unplug the power plug (C) from

the accessory power outlet in the vehicle.

14. Disconnect the air only

hose (C) from the tire valve stem, by turning it counterclockwise, and replace the tire valve stem cap.

15. Replace the air only hose (F)

and the power plug (C) back in its original location.

16. Place the equipment in the

original storage location in the vehicle.

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Vehicle Care

Removal and Installation of the Sealant Canister To remove the sealant canister:

1. Unlock the air only hose (F) from

the sealant canister (B) by pulling up on the lever.

2. Pull the air only hose (F) from

the sealant canister (B).

3. Unwrap the sealant/air hose (G)

from the compressor (A).

4. Turn the sealant canister (B) so the inflator filling hose is aligned with the slot in the compressor. 5. Lift the sealant canister (B) from the compressor and replace with a new sealant canister. See your dealer for more information.

To install a new sealant canister: 1. Align the sealant/air hose (G)

with the slot in the air compressor.

2. Push the sealant canister (B)

down and turn it clockwise.

3. Wrap the sealant/air hose (G)

around the air compressor channel to stow it in its original location.

4. Push the air compressor inflator

hose (F) onto the sealant canister inlet and push the lever down.

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Vehicle Care

10-31

Storing the Tire Sealant and Compressor Kit The tire sealant and compressor kit is located under the storage tray on the driver side trim panel (over the rear wheelhouse).

To access the tire sealant and compressor kit:

1. Remove the tray by pulling up

on the finger depression to access the tire sealant and compressor kit.

2. Locate the tire sealant and