2008 HUMMER H3 mirror

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-8
Safety Belts
.............................................1-10
Child Restraints
.......................................1-30
Airbag System
.........................................1-54
Restraint System Check
............................1-69
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-7
Windows
.................................................2-11
Theft-Deterrent Systems
............................2-14
Starting and Operating Your Vehicle
...........2-18
Mirrors
....................................................2-38
Object Detection Systems
..........................2-44
OnStar
®System
......................................2-48
Universal Home Remote System
................2-51
Storage Areas
.........................................2-56
Sunroof
..................................................2-60
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-22
Warning Lights, Gages, and Indicators
........3-25
Driver Information Center (DIC)
..................3-40
Audio System(s)
.......................................3-48Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-48
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-11
Rear Axle
...............................................5-45
Four-Wheel Drive
.....................................5-46
Front Axle
...............................................5-46
Headlamp Aiming
.....................................5-46
Bulb Replacement
....................................5-49
Windshield Wiper Blade Replacement
.........5-52
Tires
......................................................5-54
Appearance Care
.....................................5-91
Vehicle Identication
...............................5-100
Electrical System
....................................5-101
Capacities and Specications
...................5-107
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 H3 Owner ManualM

Mirrors...........................................................2-38
Automatic Dimming Rearview Mirror
with OnStar
®, Compass and
Temperature Display..................................2-38
Automatic Dimming Rearview Mirror with
Compass and Temperature Display..............2-41
Outside Power Mirrors...................................2-43
Outside Convex Mirror...................................2-44
Object Detection Systems...............................2-44
Rear Vision Camera......................................2-44
OnStar
®System.............................................2-48
Universal Home Remote System......................2-51
Universal Home Remote System Operation
(With One Triangular LED)...........................2-52Storage Areas................................................2-56
Glove Box...................................................2-56
Cupholder(s)................................................2-56
Front Seat Storage Net.................................2-57
Front Armrest Storage Area...........................2-57
Luggage Carrier...........................................2-57
Rear Storage Area........................................2-59
Convenience Net..........................................2-59
Cargo Cover................................................2-59
Cargo Tie Downs..........................................2-59
Sunroof.........................................................2-60
Section 2 Features and Controls
2-2

Express-Down Window
The driver’s window has an express-down feature that
allows you to lower the window without holding the
switch. Press the front edge of the switch past the
rst position to activate the express-down mode.
The express-down mode can be canceled at any
time by pulling up on the switch. To open the window
partway, press the front of the switch to the rst position
until the window is at the desired level.
Window Lockout
o
(Window Lockout):The window lockout button is
located forward of the window switches. This feature
disables the passenger’s window switches when
the button is pressed. Press the button again to turn the
lockout off. A red band on the side of the button can
be seen when the windows are not locked out.
Sun Visors
To block glare, pull the visor down. It can also be
detached from the center mount and moved to the side
to block glare from that direction. There are extenders
that can be pulled out for further coverage.
Visor Vanity Mirror
Your vehicle has a vanity mirror located on the driver’s
and passenger’s visor.
Illuminated Visor Vanity Mirror
Your vehicle may have an illuminated vanity mirror on
both visors. Lift the cover on the mirror and the lights will
automatically come on.
2-13

Mirrors
Automatic Dimming Rearview
Mirror with OnStar
®, Compass
and Temperature Display
Your vehicle may have this feature. When on, the
automatic dimming mirror dims to the proper level to
minimize glare from lights behind you after dark.
The mirror has a dual display in the upper right corner
of the mirror face that shows the compass reading
and the outside temperature.
Control buttons for the OnStar
®system are at the
bottom of the mirror. SeeOnStar®System on page 2-48
for more information about the services OnStar®
provides.
Y:This button is used as a toggle for changing
displays and as an on/off toggle during a function.
Your vehicle may also have a Rear Vision Camera.
SeeRear Vision Camera on page 2-44for more
information.
Slide-Out Video Feature Enable
Press and holdYfor three seconds to toggle the
slide-out video feature on/off. An indicator light will turn
on at the time the slide-out video is enabled. If the
slide-out video feature is on, each time the vehicle is
put into reverse, the slide-out video screen will extend.
SeeRear Vision Camera on page 2-44for more
information.
The slide-out video feature will remain in the current
on/off state each time the ignition goes through its cycle.
Slide-Out Video Cleaning
The slide-out video has to be enabled before the
cleaning process can take place.
Press and holdYfor six seconds or until the lower
indicator light turns on.
While extended for cleaning, neither the screen nor
the camera will have power.
PressYbriey or wait 30 seconds to end cleaning.
The screen will then retract.
2-38

Automatic Dimming Mirror Operation
The automatic dimming mirror comes on each time
the ignition is turned to start. To turn the automatic
dimming feature off or back on, press and hold
Yfor
nine seconds. The indicator light on the mirror is lit
when the automatic dimming feature is on.
Temperature Display
To adjust between Fahrenheit and Celsius:
PressYfor approximately four seconds to toggle
the display from F (Fahrenheit) to C (Celsius)
to OFF.
The temperature display will remain in its current
state each time the ignition goes through its cycle.
At start up, if the vehicle has been off for less
than two and a half hours, and the last stored
temperature was less than the current termperature,
the sensor will increase 1°F every two minutes
until the correct temperature is displayed.
If the vehicle has been off more than two and a
half hours, or the last stored temperature is
greater than the current temperature, the current
temperature immediately displays.
If the temperature is 37°F (3°C) or lower, ICE will
ash on the temperature display. This display will
ash every two seconds for a period of one minute.
If an abnormal temperature reading is displayed for
an extended period of time, see your dealer/retailer.
Under certain circumstances, a delay in updating
the temperature is normal.
Compass Display
Press theYbutton, located at the bottom of the mirror,
next to the OnStar®control buttons to turn the
compass/temperature display on or off.
If CAL is not displayed, press and hold
Yfor
15 seconds, or until CAL is displayed. The compass
is now in calibration mode. For more information,
see “Compass Calibration” following.
The mirror can be calibrated in one of two ways:
Drive the vehicle in circles at less than 5 mph
(8 km/h) until the CAL is no longer displayed in
the compass window. Then continue to drive
to make sure all eight directions are available.
Drive the vehicle under normal operating conditions.
2-39

Compass Variance
The mirror is set in zone eight upon leaving the
factory. It will be necessary to adjust the compass to
compensate for compass variance if the vehicle is
outside of zone eight. Under certain circumstances,
as during a long distance cross-country trip, it will
be necessary to adjust for compass variance. Compass
variance is the difference between earth’s magnetic
north and true geographic north. If not adjusted
to account for compass variance, the compass could
give false readings.
To adjust for compass variance:
1. Find your current location and variance zone
number on the following zone map.
2. Press and hold
Yfor 12 seconds until a zone
number appears in the display. The compass is
now in zone mode.
3. Keep pressing the
Yuntil the desired zone
number appears in the display. Release the button.
After approximately four seconds of inactivity,
the new zone number will be locked in and the
compass/temperature display will return.
2-40

Cleaning the Mirror
Use a paper towel or similar material dampened with
glass cleaner. Do not spray glass cleaner directly on
the mirror as that could cause the liquid cleaner to enter
the mirror housing.
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 2-44for more
information.
Temperature Display
The temperature can be displayed by pressing the
compass/temperature button. Pressing the compass/
temperature button once briey, will toggle the display
reading on and off. To alternate the temperature reading
between Fahrenheit and Celsius, press and hold
the compass/temperature button for approximately
three seconds until the display blinks F and C. After
approximately ve seconds of inactivity, the display will
stop blinking and display the last selection made.
If an abnormal reading is displayed, see your
dealer/retailer.
Automatic Dimming Mirror Operation
O
:Press this button to turn the automatic dimming
feature on or off. The indicator light to the left of the
button will turn on to indicate when the feature is on.
Once the mirror is turned off, it will remain off until it is
turned back on, or until the vehicle is restarted.
Compass Operation
Press the compass/temperature button once briey
to turn the display on or off.
2-41

Compass Calibration
The compass may need calibration if one of the
following occurs:
If CAL is displayed while driving in the vehicle.
After approximately ve seconds, the display does
not show a compass heading, N for North, for
example, there may be a strong magnetic eld
interfering with the compass. Such interference may
be caused by a magnetic antenna mount, magnetic
note pad holder, or a similar magnetic item.
The compass does not display the correct heading
and the compass zone variance is set correctly.
In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed, push
in the compass/temperature button for approximately
nine seconds or until CAL is displayed.
The compass can be calibrated by driving the vehicle
in circles at 5 mph (8 km/h) or less until the display
reads a direction.
Compass Variance
The mirror is set in zone eight upon leaving the
factory. It will be necessary to adjust the compass to
compensate for compass variance if the vehicle is
outside zone eight. Under certain circumstances,
as during a long distance cross-country trip, it will
be necessary to adjust for compass variance.Compass variance is the difference between earth’s
magnetic north and true geographic north. If not
adjusted to account for compass variance, your
compass could give false readings.
To adjust for compass variance:
1. Find your current location and variance zone
number on the following zone map.
2. Press and hold the compass/temperature button
for six seconds until a zone number appears in
the display.
2-42