2008 HUMMER H2 four wheel drive

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-8
Safety Belts
.............................................1-16
Child Restraints
.......................................1-36
Airbag System
.........................................1-64
Restraint System Check
............................1-76
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
......................................2-10
Windows
.................................................2-19
Theft-Deterrent Systems
............................2-24
Starting and Operating Your Vehicle
...........2-28
Mirrors
....................................................2-45
Object Detection Systems
..........................2-50
OnStar
®System
......................................2-53
Universal Home Remote System
................2-57
Storage Areas
.........................................2-64
Sunroof
..................................................2-67
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-22
Warning Lights, Gages, and Indicators
........3-31
Driver Information Center (DIC)
..................3-49
Audio System(s)
.......................................3-72Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-51
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
................. 5-9
Rear Axle
...............................................5-45
Four-Wheel Drive
.....................................5-46
Front Axle
...............................................5-47
Bulb Replacement
....................................5-48
Windshield Wiper Blade Replacement
.........5-54
Tires
......................................................5-55
Appearance Care
...................................5-100
Vehicle Identication
...............................5-109
Electrical System
....................................5-110
Capacities and Specications
...................5-117
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-14
Vehicle Data Recording and Privacy
...........7-16
Index................................................................ 1
2008 HUMMER H2 Owner ManualM

Keys...............................................................2-3
Remote Keyless Entry (RKE) System................2-4
Remote Keyless Entry (RKE) System
Operation...................................................2-5
Remote Vehicle Start......................................2-8
Doors and Locks............................................2-10
Door Locks..................................................2-10
Power Door Locks........................................2-11
Delayed Locking...........................................2-11
Programmable Automatic Door Locks..............2-11
Rear Door Security Locks..............................2-12
Lockout Protection........................................2-12
Liftgate (SUV)..............................................2-13
Midgate
®(SUT)............................................2-14
Tailgate/Spare Tire Carrier.............................2-16
Windows........................................................2-19
Power Windows............................................2-20
Sun Visors...................................................2-23
Theft-Deterrent Systems..................................2-24
Content Theft-Deterrent.................................2-24
PASS-Key
®III+............................................2-26
PASS-Key®III+ Operation..............................2-26Starting and Operating Your Vehicle................2-28
New Vehicle Break-In....................................2-28
Ignition Positions..........................................2-28
Retained Accessory Power (RAP)...................2-29
Starting the Engine.......................................2-30
Engine Coolant Heater..................................2-31
Automatic Transmission Operation...................2-32
Tow/Haul Mode............................................2-36
Full-Time Four-Wheel Drive............................2-36
Parking Brake..............................................2-40
Shifting Into PARK (P)...................................2-41
Shifting Out of PARK (P)...............................2-42
Parking Over Things That Burn.......................2-43
Engine Exhaust............................................2-43
Running the Engine While Parked...................2-44
Mirrors...........................................................2-45
Automatic Dimming Rearview Mirror with
Compass and Temperature Display..............2-45
Outside Power Foldaway Mirrors.....................2-48
Outside Automatic Dimming Mirror..................2-49
Outside Convex Mirror...................................2-49
Outside Heated Mirrors..................................2-49
Section 2 Features and Controls
2-1

Tow/Haul Mode
Your vehicle is equipped
with a tow/haul mode.
The button is located on
the instrument panel
to the right of the
steering wheel.
You can use this feature to assist when towing or
hauling a heavy load. See “Tow/Haul Mode” under
Towing a Trailer on page 4-55for more information.
Full-Time Four-Wheel Drive
The transfer case on your Full-Time Four-Wheel Drive
vehicle is designed to constantly send the engine’s
driving power to all four wheels for extra traction.
To get the most out of Full-Time Four-Wheel Drive,
you must be familiar with its operation.
Notice:Driving on pavement in Four-Wheel
High Lock or Four Wheel Low Lock for extended
periods may cause premature wear on your vehicle’s
powertrain and tires. Do not drive in Four-Wheel
High Lock or Four-Wheel Low Lock on pavement for
extended periods.
Transfer Case Dial
The transfer case dial is
located to the right of the
instrument panel cluster.
Use this switch to shift into
and out of the different
Full-Time Four-Wheel
Drive modes.
The transfer case is a part of the Full-Time Four-Wheel
Drive system and allows the following four different
modes of operation:
4
m(Full-Time Four-Wheel Drive):This setting is used
for driving in most street and highway situations.
It can be used for light or variable off-road conditions.
4
mQ(Four-Wheel-High Lock):Use this mode when
you need extra traction in most off-road situations
such as sand, mud, snow, or level, rocky trails.
4
nQ(Four-Wheel-Low Lock):This mode delivers
extra torque to all four wheels and is used for extreme
off-road conditions. Choose Four-Wheel-Low Lock while
driving off-road in deep sand, mud, or snow and climbing
or descending steep hills.
2-36

When in this mode you can also choose to lock the rear
axle for additional traction in extreme off-road situations.
SeeLocking Rear Axle on page 4-6.
Notice:Operating your vehicle in
Four-Wheel-Low Lock above 50 mph (80 km/h) for
any extended period of time could cause damage to
the transfer case. Do not operate your vehicle in
Four-Wheel-Low Lock above 50 mph (80 km/h)
for extended periods.
{CAUTION:
Shifting the transfer case to NEUTRAL can
cause your vehicle to roll even if the
transmission is in PARK (P). You or someone
else could be seriously injured. Be sure to set
the parking brake before placing the transfer
case in NEUTRAL. SeeParking Brake on
page 2-40.N (NEUTRAL):Shift the vehicle’s transfer case to
NEUTRAL only when towing your vehicle. See
Recreational Vehicle Towing on page 4-51orTowing
Your Vehicle on page 4-51for more information.
Indicator lights in the dial shows which mode you are in.
The indicator lights will come on briey when you turn
on the ignition and one will stay on. If the lights do
not come on, take your vehicle to your dealer/retailer
for service. An indicator light will ash while shifting
the transfer case. It will remain on when the shift
is complete. If for some reason the transfer case
cannot make a requested shift, it will return to the last
chosen setting.
If the SERVICE 4WD message stays on, you should
take your vehicle to your dealer/retailer for service.
See “Service 4WD message” underDriver Information
Center (DIC) on page 3-49.
2-37

Shifting between Four-Wheel High and
Four-Wheel-High Lock
With the vehicle traveling less than 40 mph
(64 km/h), turn the dial to the Four-Wheel High or
Four-Wheel-High Lock position. The indicator light on
the dial will ash while shifting. It will remain on
when the shift is complete.
It may be necessary to drive backwards for a short
distance of 25 feet (7.5 m) to get the lock feature
to disengage.
Shifting into Four-Wheel-Low Lock
To shift into Four-Wheel-Low Lock, the ignition must be
in RUN and the vehicle must be stopped or moving
less than 3 mph (5 km/h) with the transmission in
NEUTRAL (N). The preferred method for shifting into
Four-Wheel Low is to have your vehicle moving
1 to 2 mph (1.6 to 3.2 km/h). Turn the dial to the
Four-Wheel-Low Lock position. You must wait for the
Four-Wheel-Low Lock indicator light on the dial to
stop ashing and remain lit before shifting the
transmission in gear.When the transfer case is shifted into Four-Wheel-Low
Lock position a StabiliTrak
®indicator light will come
on to show that the system has been turned off and a
message will show in the DIC. SeeDIC Warnings
and Messages on page 3-56for more information.
Notice:Shifting the transmission into gear before
the indicator light stops ashing could cause
damage to the transfer case. Always wait until the
indicator light stops ashing before putting the
transmission back in gear.
It is normal for your vehicle to have engagement noise
and bump when shifting between Four-Wheel Low
and Four-Wheel High or Four-Wheel-High Lock ranges
or from NEUTRAL with the engine running.
If the Four-Wheel-Low Lock position is selected when
your vehicle is in gear and/or moving, the Four-Wheel
Low Lock indicator light will ash for 15 seconds and not
complete the shift unless your vehicle is moving less
than 3 mph (5 km/h) and the transmission is in
NEUTRAL (N). After 15 seconds the transfer case will
return to the setting last chosen.
2-38

Shifting Out of Four-Wheel Low Lock
To shift from Four-Wheel-Low Lock to Four-Wheel High
or Four-Wheel-High Lock, your vehicle must be
stopped or moving less than 3 mph (5 km/h) with the
transmission in NEUTRAL (N) and the ignition
in RUN. The preferred method for shifting out of
Four-Wheel-Low Lock is to have your vehicle moving
1 to 2 mph (1.6 to 3.2 km/h). Turn the dial to the
Four-Wheel High or Four-Wheel-High Lock position.
You must wait for the Four-Wheel High or
Four-Wheel-High Lock indicator light to stop ashing
and remain lit before shifting your transmission into gear.
It is normal for your vehicle to have engagement
noise and bump when shifting between Four-Wheel Low
and Four-Wheel High or Four-Wheel-High Lock ranges
or from NEUTRAL with the engine running.
If the Four-Wheel High or Four-Wheel-High Lock position
is selected when your vehicle is in gear and/or moving,
the Four-Wheel High or Four-Wheel-High Lock indicator
light will ash for 30 seconds but will not complete the
shift unless your vehicle is moving less than 3 mph
(5 km/h) and the transmission is in NEUTRAL (N).
Notice:Shifting the transmission into gear before
the indicator light stops ashing could cause
damage to the transfer case. Always wait until the
indicator light stops ashing before putting the
transmission back in gear.
Shifting into NEUTRAL
To shift the transfer case to NEUTRAL do the following:
1. Make sure the vehicle is parked so that it will not roll.
2. Set the parking brake and apply the regular brake
pedal. SeeParking Brake on page 2-40
3. Start the vehicle or turn the ignition to ON/RUN.
4. Put the transmission in NEUTRAL (N).
5. Shift the transfer case to Two-Wheel Drive High.
6. Turn the transfer case dial clockwise to NEUTRAL
position. The transfer case will not shift to NEUTRAL
unless this position is held for 10 seconds.
The NEUTRAL light will come on and then the dial
can be slowly released. The dial will be in the
Four-Wheel Low Lock position but the transfer case
will be in NEUTRAL with the NEUTRAL light on.
7. If the engine is running, make sure that the transfer
case is in NEUTRAL (N) by shifting the transmission
to REVERSE (R) for one second, then shift the
transmission to DRIVE (D) for one second.
8. Turn the ignition to ACC/ACCESSORY, which will
turn the engine off.
9. Place the transmission shift lever in PARK (P).
10. Release the parking brake prior to moving
the vehicle.
11. Turn the ignition to LOCK/OFF.
2-39

{CAUTION:
Full-time four-wheel drive vehicles with the
transfer case in NEUTRAL will allow the
vehicle to roll, even if the shift lever is in
PARK (P). So, be sure the transfer case is in a
drive gear — not in NEUTRAL. Always set the
parking brake.
Follow the proper steps to be sure your vehicle will not
move. SeeShifting Into PARK (P) on page 2-41.
If you are pulling a trailer, seeTowing a Trailer on
page 4-55.
Mirrors
Automatic Dimming Rearview Mirror
with Compass and Temperature
Display
Your vehicle may have this mirror. When on, an
automatic dimming mirror will dim to the proper level to
minimize glare from lights behind you after dark.
The mirror also includes a dual display in the upper
right corner of the mirror with the compass reading and
the outside temperature.
Yb:Briey press this button to turn the display
on or off.
Your vehicle may also have a Rear Vision Camera.
SeeRear Vision Camera on page 2-50.
2-45

The main components of the instrument panel are the following:
A. Air Outlets. SeeOutlet Adjustment on page 3-29.
B. Midgate Window Switch (SUT). SeePower Windows
on page 2-20. Rear Wiper/Washer Switch (SUV).
SeeRear Window Wiper/Washer on page 3-11.
C. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 3-7.
D. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-32.
E. Audio Steering Wheel Buttons. SeeAudio Steering
Wheel Controls on page 3-116.
F. Driver Information Center (DIC) Buttons. SeeDriver
Information Center (DIC) on page 3-49.
G. Analog Clock.Analog Clock on page 3-21.
H. Airbag Switch. SeeAirbag Off Switch on page 1-72.
I. Global Window Switch. SeePower Windows
on page 2-20.
J. Exterior Lamps Control. SeeExterior Lamps
on page 3-15.
K. Dome Lamp Override Button. SeeDome Lamp
Override on page 3-19Instrument Panel Brightness
Control. SeeInstrument Panel Brightness on
page 3-18. Heated Windshield Washer Control
(If Equipped). SeeWindshield Washer on page 3-10.L. Cruise Control Buttons. SeeCruise Control
on page 3-12.
M. Tilt Lever. SeeTilt Wheel on page 3-6.
N. Horn. SeeHorn on page 3-6.
O. Full-Time Four-Wheel Drive Buttons. SeeFull-Time
Four-Wheel Drive on page 2-36.
P. Locking Rear Axle. SeeLocking Rear Axle on
page 4-6. Tow/Haul Selector Button. SeeTow/Haul
Mode on page 2-36. Traction Control (TCS) Button.
SeeTraction Control System (TCS) on page 4-5.
Ride Height Selector Button (If Equipped). See
Selectable Extended Rear Ride Height on page 4-53.
Q. Shift Lever. SeeAutomatic Transmission Operation
on page 2-32.
R. Accessory Power Outlet. SeeAccessory Power
Outlet(s) on page 3-20.
S. Climate Control System. SeeDual Automatic
Climate Control System on page 3-22.
T. Audio System. SeeAudio System(s) on page 3-72.
U. Glove Box. SeeGlove Box on page 2-64.
3-5