CHEVROLET TAHOE 2011 3.G Repair Manual

Black plate (13,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Vehicle Care 10-13
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. SeeJump 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.
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
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.
2. Remove the two screws from the
taillamp assembly.

Black plate (14,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
10-14 Vehicle Care
3. Pull the taillamp assemblyrearward 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
Exterior Lamp Bulb
Number
Back-up Lamp and
Rear Turn
Signal Lamp 3156
Sidemarker Lamp 194
For replacement bulbs not listed
here, contact your dealer.
Electrical System
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.

Black plate (15,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Vehicle Care 10-15
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.
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.

Black plate (16,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
10-16 Vehicle Care
FusesUsage
1 ACPO (SUV Only)
2 BECM FAN
3 ACCM
4 CAB HTR PMP Fuses
Usage
5 EMPTY
6 COOL PUMP
7 EPS
8 Drive Motor/Generator
Control Module 1 Fuses
Usage
9 Drive Motor/Generator
Control Module 2
10 BECM
J‐Case Usage
FAN 1 Cooling Fan 1
TRANS PUMP Auxiliary
Transmission Fluid Pump
FAN 2 Cooling Fan 2
CAB
HTR PMP Cab Heater Pump
Relays Usage
CAB
HTR
PUMP Cabin Heater Pump
COOL
PUMP Coolant Pump
FAN LOW Cooling Fan Low
Speed Relay

Black plate (17,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Vehicle Care 10-17
RelaysUsage
FAN
MID 1 Cooling Fan Mid 1
FAN HI Cooling Fan High
Speed Relay
FAN
MID 2 Cooling Fan Mid 2
FAN
CNTRL Cooling Fan ControlWheels 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. 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

Black plate (18,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
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 tireand 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

Black plate (19,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Vehicle Care 10-19
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 seeDriver 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.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.

Black plate (20,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
10-20 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
QandKon 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

Black plate (21,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Vehicle Care 10-21
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” 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.

Black plate (22,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
10-22 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