2009 GMC YUKON HYBRID tires

Seats and Restraint System............................. 1-1
Front Seats ............................................... 1-2
Restraint System Check .............................. 1-3
Features and Controls ..................................... 2-1
Storage Areas ........................................... 2-2
Starting and Operating Your Vehicle ............. 2-3
Instrument Panel ............................................. 3-1
Climate Controls ........................................ 3-2
Warning Lights, Gages, and Indicators .......... 3-3
Driver Information Center (DIC) ..................3-12
Audio System(s) ....................................... 3-14Driving Your Vehicle
....................................... 4-1
Your Driving, the Road, and the Vehicle ....... 4-2
Towing ..................................................... 4-2
Service and Appearance Care .......................... 5-1
Service ..................................................... 5-2
Checking Things Under the Hood ................. 5-3
Bulb Replacement .................................... 5-21
Electrical System ...................................... 5-22
Tires ...................................................... 5-24
Capacities and Specifications .....................5-52
Maintenance Schedule ..................................... 6-1
Maintenance Schedule ................................ 6-2
Index ............................................................
....
1
2009 Chevrolet Tahoe and GMC Yukon Two-Mode HybridM

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 35 mph (55 km/h), push the
accelerator pedal about halfway down.
•Going about 35 mph (55 km/h) 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 “Skidding” under “Loss of
Control” in the Index of the vehicle’s owner manual
for more information.
When temperatures are very cold, the transmission’s
gear shifting may be delayed, providing more stable
shifts until the engine warms up. 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 “Range
Selection Mode” later in this section.
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 not upshift. In some cases, this may appear to be a
delayed shift, however the transmission is operating
normally.
2-8

Service............................................................5-2
Doing Your Own Service Work.........................5-2
Checking Things Under the Hood.....................5-3
High Voltage Devices and Wiring......................5-3
Engine Compartment Overview.........................5-4
Automatic Transmission Fluid...........................5-5
Drive Motor/Generator Control Module (DMCM)
Coolant Surge Tank Pressure Cap..................5-6
Drive Motor/Generator Control Module (DMCM)
Cooling System...........................................5-6
Power Steering Fluid.....................................5-11
Brakes........................................................5-11
Battery........................................................5-15
Jump Starting...............................................5-16
Bulb Replacement..........................................5-21
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps.........................................5-21
Replacement Bulbs.......................................5-22Electrical System............................................5-22
Fuses and Circuit Breakers............................5-22
Underhood Fuse Block..................................5-22
Tires..............................................................5-24
Inflation - Tire Pressure.................................5-24
Tire Pressure Monitor Operation.....................5-25
Tire Inspection and Rotation...........................5-29
Tire Chains..................................................5-30
If a Tire Goes Flat........................................5-30
Tire Sealant and Compressor Kit
(Without Selector Switch)............................5-32
Tire Sealant and Compressor Kit
(With Selector Switch)................................5-42
Tire Sealant and Compressor Kit Storage.........5-50
Capacities and Specications..........................5-52
Section 5 Service and Appearance Care
5-1

Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts in
the proper sequence to torque specifications in
“Capacities and Specifications” in the owner manual.
Brake linings should always be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer/retailer if the brake pedal does not
return to normal height, or if there is a rapid increase in
pedal travel. This could be a sign that brake service
might be required.
Brake Adjustment
Every time the brakes are applied, the disc brakes
adjust for wear.
Replacing Brake System Parts
The braking system on a vehicle is complex. Its many
parts have to be of top quality and work well together
if the vehicle is to have really good braking. The
vehicle was designed and tested with top-quality
brake parts. When parts of the braking system are
replaced — for example, when the brake linings wear
down and new ones are installed — be sure to get new
approved replacement parts. If this is not done, the
brakes might not work properly. For example, if
someone puts in brake linings that are wrong for the
vehicle, the balance between the front and rear brakes
can change — for the worse. The braking performance
expected can change in many other ways if the
wrong replacement brake parts are installed.
5-14

Tires
Ination - Tire Pressure
Tires need the correct amount of air pressure to operate
effectively.
Notice:Do not let anyone tell you that
under-ination or over-ination is all right.
It is not. If your tires do not have enough air
(under-ination), you can get the following:
Too much exing
Too much heat
Tire overloading
Premature or irregular wear
Poor handling
Reduced fuel economy
If your tires have too much air (over-ination),
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 “Loading Your
Vehicle” in the Index of the owner manual. How you
load your vehicle 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.
5-24

How to Check
Use a good quality pocket-type gage 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 mile (1.6 km).
Remove the valve cap from the tire valve stem.
Press the tire gage 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 gage.
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.
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 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 seeDIC
Warnings and Messages on page 3-12. Also, see “DIC
Operation and Displays” in the Index of the owner
manual for more information.
5-25

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 “Loading
Your Vehicle” for an example of the Tire and Loading
Information label and its location on your vehicle.
Also seeInflation - Tire Pressure on page 5-24.
Your vehicle’s TPMS can warn you about a low tire
pressure condition but it does not replace normal
tire maintenance. See “Tire Inspection and Rotation”
and “Tires” in the Index of the owner manual for more
information.
Notice:Using non-approved tire sealants 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 the GM approved tire
sealant available through your dealer/retailer.Your vehicle, when new, included a factory-installed
Tire Sealant and Compressor Kit. This kit uses a
GM approved liquid tire sealant. SeeTire Sealant and
Compressor Kit (Without Selector Switch) on page 5-32
orTire Sealant and Compressor Kit (With Selector
Switch) on page 5-42.
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.
5-26

•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/retailer 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 Index of 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/retailer 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/retailer 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
gage, or a key.
5-27