2011 CHEVROLET TAHOE transmission

Black plate (5,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Vehicle Care 10-5
A. See“Engine Air Cleaner/Filter”
in the owner manual.
B. Drive Motor/Generator Control 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. E. Brake Fluid Reservoir. See
“Brakes” in the owner manual.
F. See “Engine Compartment Fuse
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. 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.

Black plate (6,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
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.

Black plate (7,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
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 dipstickat the rear of the engine
compartment, on the passenger
side of the vehicle.
See Engine Compartment
Overview on page 10‑4 for more
information.
2. Pull out the dipstick and wipe it with a clean rag or paper towel.
3. 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 theCOLD 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).
7. If the fluid level is in the acceptable range, push the
dipstick back in all the way.

Black plate (8,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
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.
1. Locate the transmission dipstickat the rear of the engine
compartment, on the passenger
side of the vehicle. See
Engine Compartment
Overview on page 10‑4 for more
information.
2. Pull out the dipstick and wipe it with a clean rag or paper towel.
3. 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. Safe operating level is within theHOT 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 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.
6. If the fluid level is in the acceptable range, push the
dipstick back in all the way.
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.

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 (33,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Vehicle Care 10-33
2. Get the vehicles close enoughso the jumper cables can reach,
but be sure the vehicles are not
touching each other. It could
cause a ground connection you
do not want. You would not be
able to start your vehicle, and
the bad grounding could damage
the electrical systems.
To avoid the possibility of the
vehicles rolling, set the parking
brake firmly on both vehicles
involved in the jump start
procedure. Put the automatic
transmission in P (Park) or a
manual transmission in
N (Neutral) before setting the
parking brake. If you have a
four-wheel-drive vehicle, be sure
the transfer case is in a drive
gear, not in N (Neutral). Notice:
If you leave the radio or
other accessories on during the
jump starting procedure, they
could be damaged. The repairs
would not be covered by the
warranty. Always turn off the
radio and other accessories when
jump starting the vehicle.
3. Turn off the ignition on both
vehicles. Unplug unnecessary
accessories plugged into the
cigarette lighter or the accessory
power outlets. Turn off the radio
and all the lamps that are not
needed.
This avoids sparks and helps
save both batteries. It could
save the radio!
4. Open the hood on the other vehicle and locate the
positive (+) and negative (−)
terminal locations on that
vehicle. Your vehicle has a remote
positive (+) and a remote
negative (−) jump starting
terminal. You should always use
these remote terminals instead
of the terminals on the battery.
If the vehicle has a remote
positive (+), it is located under a
red plastic cover at the positive
battery post. To uncover the
remote positive (+) terminal,
open the red plastic cover.

Black plate (37,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Vehicle Care 10-37
Dinghy Towing
Two-Wheel Drive Vehicles
Notice:If the vehicle is towed
with all four wheels on the
ground, the drivetrain
components could be damaged.
The repairs would not be covered
by the vehicle warranty. Do not
tow the vehicle with all four
wheels on the ground.
Two-wheel drive vehicles should not
be towed with all four wheels on the
ground. Two-wheel drive transmissions have no provisions
for internal lubrication while being
towed.
Four-Wheel Drive Vehicles
Use the following procedure to
dinghy tow a four-wheel drive
vehicle:
1. Position the vehicle being towed
behind the tow vehicle and shift
the transmission to P (Park).
2. Turn the engine off and firmly set the parking brake. See “Parking
Brake” in the owner manual. 3. Securely attach the vehicle
being towed to the tow vehicle.
{WARNING
Shifting a four-wheel-drive
vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). The driver or others
could be injured. Make sure the
parking brake is firmly set before
the transfer case is shifted to
N (Neutral).
4. Shift the transfer case to N (Neutral). For more information
on“Shifting into N (Neutral)”, see
“Four Wheel Drive” in the owner
manual.
5. Release the parking brake only after the vehicle being towed is
firmly attached to the towing
vehicle.
6. Turn the ignition to LOCK/OFF and remove the key —the
steering wheel will still turn.

Black plate (38,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
10-38 Vehicle Care
Dolly Towing–Front Towing
(Front Wheels Off the Ground)
Two-Wheel Drive Vehicles
Notice: If a two-wheel-drive
vehicle is towed with the rear
wheels on the ground, the
transmission could be damaged.
The repairs would not be covered
by the vehicle warranty. Never
tow the vehicle with the rear
wheels on the ground.
Two-wheel drive vehicles should not
be towed with the rear wheels on
the ground. Two-wheel drive transmissions have no provisions
for internal lubrication while being
towed.
To dolly tow a two‐wheel drive
vehicle, the vehicle must be towed
with the rear wheels on the dolly.
See
“Rear Towing (Rear Wheels Off
the Ground)” in this section for more
information.
Four-Wheel Drive Vehicles
Use the following procedure to dolly
tow a four-wheel drive vehicle from
the front:
1. Attach the dolly to the tow
vehicle following the dolly
manufacturer's instructions.
2. Drive the front wheels onto the dolly.
3. Shift the transmission to P (Park).
4. Firmly set the parking brake. See “Parking Brake” in the
owner manual.
{WARNING
Shifting a four-wheel-drive
vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). The driver or others
could be injured. Make sure the
parking brake is firmly set before
the transfer case is shifted to
N (Neutral).