light HUMMER H2 2007 Owner's Manual

Full-Time Four-Wheel Drive
The transfer case on your Full-Time Four-Wheel
Drive vehicle is designed to constantly send
your 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 Buttons
The transfer case
buttons are located to
the right of the
instrument panel cluster.
Use these switches 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. You can also use this setting for light or
variable off-road conditions.
128

Indicator lights in the buttons show 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, you should take your vehicle
to your dealer 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 for service.
See “Service 4WD message” underDriver
Information Center (DIC) on page 222.
Shifting between Four-Wheel High and
Four-Wheel-High Lock
With the vehicle traveling less than 40 mph
(64 km/h), press and release the Four-Wheel High
or Four-Wheel-Low Lock button. The indicator
light 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).
Press and release the Four-Wheel-Low Lock
button. You must wait for the Four-Wheel-Low Lock
indicator light to stop ashing and remain lit before
shifting your transmission in gear.
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.
130

If the Four-Wheel-Low Lock button is pressed
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.
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).
Press and release the Four-Wheel High or
Four-Wheel-High Lock button. 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
button is pressed 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.
131

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.
3. Start the vehicle or turn the ignition to RUN.
4. Put the transmission in NEUTRAL (N).
5. Shift the transfer case to Four-Wheel High.
6. Simultaneously press and hold the
Four-Wheel High and Four-Wheel Low Lock
buttons for 10 seconds. The NEUTRAL
light will come on when the transfer case shift
to NEUTRAL is complete.
7. If the engine is running, verify that the
transfer case is in NEUTRAL by shifting
the transmission to REVERSE (R), then shift
the transmission to DRIVE (D) and then
back to NEUTRAL (N).
8. Turn the ignition to ACCESSORY, which will
turn the engine off.
9. Place the transmission shift lever in PARK (P).
10. Turn the ignition to LOCK.
Shifting Out of NEUTRAL
To shift the transfer case out of NEUTRAL, do the
following:
1. Set the parking brake and apply the regular
brake pedal.
2. Shift the transmission to NEUTRAL (N) and
turn the ignition to RUN with the engine off.
3. Press the button for the desired transfer case
shift position (Four-Wheel High,
Four-Wheel-High Lock, or
Four-Wheel-Low Lock).
4. After the transfer case has shifted out of
NEUTRAL the red light will go out.
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.
5. You may start the engine and shift the
transmission to the desired position.
132

Parking Brake
To set the parking brake, hold the regular brake
pedal down with your right foot. Push down
the parking brake pedal with your left foot.
A chime will activate and the warning light will
ash when the parking brake is applied and
the vehicle is moving at least 3 mph (5 km/h) for
at least three seconds.To release the parking brake, hold the regular
brake pedal down. Pull the bottom edge of
the lever, located above the parking brake pedal,
with the parking brake symbol, to release the
parking brake.
If the ignition is on when the parking brake is
released, the brake system warning light will
go off.
Notice:Driving with the parking brake on can
overheat the brake system and cause
premature wear or damage to brake system
parts. Verify that the parking brake is fully
released and the brake warning light is
off before driving.
If you are towing a trailer and are parking on any
hill, seeTowing a Trailer on page 374.
133

{CAUTION:
Full-time four-wheel drive vehicles with
the transfer case in NEUTRAL will allow
the vehicle to roll, even if your shift lever
is in PARK (P). So, be sure the transfer
case is in a drive gear — not in NEUTRAL.
Always set your parking brake.
Follow the proper steps to be sure your vehicle
will not move. SeeShifting Into Park (P) on
page 134.
If you are pulling a trailer, seeTowing a Trailer on
page 374.
Mirrors
Automatic Dimming Rearview
Mirror with Compass and
Temperature Display
If your vehicle is equipped with an automatic
mirror, it will, when on, automatically dim to the
proper level to minimize glare from lights behind
you after dark.
The mirror also includes a display in the upper
right corner of the mirror face. The compass
reading and the outside temperature will both
appear in the display at the same time. The dual
display can be turned on or off by briey
pressing the compass/temperature button.
O:This is the button for the automatic dimming
and compass/temperature functions.
Your vehicle may also have a Rear Vision
Camera. SeeRear Vision Camera on page 192
for more information.
139

Automatic Dimming Mirror Operation
To turn the automatic dimming feature on or
off, press and hold the compass/temperature
button until the indicator light located to the left of
the button turns on or off. This shows that the
automatic dimming feature is activated. Once the
mirror is turned off, it will remain off until it is
turned back on, or until the vehicle is restarted.
Temperature Display
The temperature can be displayed by pressing the
compass/temperature button. Pressing the
compass/temperature button once briey, will
toggle the temperature reading on and off. To
alternate the temperature reading between
Fahrenheit and Celsius, press and hold the
compass/temperature button for approximately
four seconds until the display blinks F and C. Press
and release the compass/temperature button to
toggle between the Fahrenheit and Celsius
readings. After approximately four seconds of
inactivity, the display will stop blinking and display
the last selection made.
If an abnormal reading is displayed, for an
extended period of time, please consult your
dealer. Under certain circumstances, a delay in
updating the temperature is normal.
Compass Operation
Press the compass/temperature button once
briey to turn the compass on or off.
Compass Calibration
The compass may need calibration if the
following occurs:
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 eight seconds or until CAL is
displayed.
The compass can only be calibrated by driving the
vehicle forward in circles at 5 mph (8 km/h) or less
until the display reads a direction. Do not attempt to
calibrate the compass by driving in reverse.
140

OnStar®service cannot work unless your vehicle
is in a place where OnStar®has an agreement
with a wireless service provider for service in that
area. OnStar
®service also cannot work unless
you are in a place where the wireless service
provider OnStar
®has hired for that area
has coverage, network capacity and reception
when the service is needed, and technology that
is compatible with the OnStar
®service. Not all
services are available everywhere, particularly in
remote or enclosed areas, or at all times.
OnStar
®service that involves location information
about your vehicle cannot work unless GPS
satellite signals are unobstructed and available in
that place as well.
Your vehicle must have a working electrical
system (including adequate battery power) for the
OnStar
®equipment to operate. There are other
problems OnStar®cannot control that may prevent
OnStar®from providing OnStar®service to you
at any particular time or place. Some examples are
damage to important parts of your vehicle in an
accident, hills, tall buildings, tunnels, weather
or wireless phone network congestion.
Your Responsibility
You may need to increase the volume of your
radio to hear the OnStar®advisor. If the light next
to the OnStar®buttons is red, this means that
your system is not functioning properly and should
be checked by a dealer. If the light appears
clear (no light is appearing), your OnStar
®
subscription has expired. You can always press
the OnStar®button to conrm that your OnStar®
equipment is active.
Universal Home Remote
System
Universal Home Remote System
(With Three Round LED)
The Universal Home Remote System provides a
way to replace up to three hand-held
Radio-Frequency (RF) transmitters used to
activate devices such as garage door openers,
security systems, and home lighting.
148

This device complies with Part 15 of the FCC
Rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful
interference.
2. This device must accept any interference
received, including interference that may
cause undesired operation.
The FCC Grant of Equipment Authorization
Certicate number is KOBGTE05A.
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
1. This device may not cause interference.
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
The Canadian Registration ID number is
3521A-GTE05A.
Changes or modications to this system by other
than an authorized service facility could void
authorization to use this equipment.Universal Home Remote System
(With One Triangular LED)
The Universal Home Remote System provides
a way to replace up to three hand-held
radio-frequency (RF) transmitters used to activate
devices such as garage door openers, security
systems, and home lighting.
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful
interference.
2. This device must accept any interference
received, including interference that may
cause undesired operation.
The FCC Grant of Equipment Authorization
Certicate number is CB2SAHL3.
149

This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
1. This device may not cause interference.
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
The Canadian Registration ID number is
2791021849A.
Changes or modications to this system by other
than an authorized service facility could void
authorization to use this equipment.Universal Home Remote System
Operation (With Three Round LED)
Your vehicle may have the Universal Home Remote
System. If there are three round Light Emitting
Diode (LED) above the Universal Home Remote
System buttons, follow the instructions below.
If there is one triangular LED above the Universal
Home Remote System buttons, follow the
instructions under Universal Home Remote System
Operation (with one triangular LED).
This system provides a way to replace up to
three remote control transmitters used to activate
devices such as garage door openers, security
systems, and home lighting.
150