display HUMMER H3 2008 Owners Manual

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

Remote Keyless Entry (RKE)
System Operation
You can lock and unlock the vehicle’s doors and disarm
or arm the theft-deterrent system from about 3 feet (1 m)
up to 30 feet (9 m) away using the Remote Keyless
Entry (RKE) transmitter. SeeContent Theft-Deterrent
on page 2-14for additional information.
UNLOCK:Press this
button to unlock the driver’s
door and turn on the
interior lamps. The parking
lamps may also ash,
and the horn may chirp,
when this button is pressed.
Press the unlock button again within three seconds and
all of the doors will unlock.LOCK:Press this button to lock all the doors. The
parking lamps may also ash and the horn may chirp
when this button is pressed.
If a door is open or ajar when the lock button is pressed,
the doors will lock, but the theft-deterrent system will
not arm until the open door is closed.
Different feedback modes can be programmed through
the Driver Information Center (DIC). See “Remote
Keyless Entry Feedback” underDIC Operation and
Displays on page 3-40.
L(Panic):Press this button to make the horn sound
and the headlamps and taillamps ash for up to
30 seconds. To turn them off, do one of these three
things: wait for 30 seconds; press the panic button
again; or start the vehicle.
2-5

Power Door Locks
The power door lock
switches are located on
the driver’s and the
front passenger’s doors.
Press L (lock) to lock all the doors at once.
To unlock all the doors, press U (unlock).
Programmable Automatic
Door Locks
If your vehicle has an automatic transmission, it is
programmed from the factory to lock the doors
automatically when the shift lever is moved out of
PARK (P). All the doors will unlock when the shift lever
is moved back into PARK (P).
If your vehicle has a manual transmission, it is
programmed from the factory to lock the doors
automatically when the vehicle speed is greater than
15 mph (24 km/h). The doors will unlock when the key is
removed from the ignition.
To personalize the automatic door locks, see “Automatic
Door Locks” underDIC Operation and Displays on
page 3-40. Driver’s side shown
2-8

If you have an automatic transmission, the ignition
switch cannot be turned to LOCK/OFF unless the shift
lever is in PARK (P).
If the steering wheel is locked, move it from right to
left and turn the key to ACC/ACCESSORY. If none of
this works, then your vehicle needs service.
(B) ACC/ACCESSORY:This is the position in which
you can operate your electrical accessories or items
plugged into the accessory power outlets. On automatic
transmission vehicles, this position unlocks the
ignition. On manual transmission vehicles, it unlocks the
ignition and steering wheel. Use this position if your
vehicle must be pushed or towed.
(C) ON/RUN:This is the position that the switch returns
to after you start your engine and release the switch.
The switch stays in ON when the engine is running.
But even when the engine is not running, you can use
ON/RUN to operate the electrical accessories and
to display some instrument panel cluster warning and
indicator lights. The transmission is also unlocked in
this position on automatic transmission vehicles.
The battery could be drained if you leave the key in
the ACC/ACCESSORY or ON/RUN position with
the engine off. You may not be able to start your
vehicle if the battery is allowed to drain for an
extended period of time.START (D):This is the position that starts the engine.
When the engine starts, release the key. The ignition
switch returns to ON/RUN for driving.
When the engine is not running, ACC/ACCESSORY
and ON/RUN allows you to operate the electrical
accessories, such as the radio or items plugged into
the accessory power outlets.
A warning tone will sound if you open the driver’s
door when the ignition is in ACC/ACCESSORY or
LOCK/OFF and the key is in the ignition.
Key In the Ignition
Never leave your vehicle with the keys inside, as it is an
easy target for joy riders or thieves. If you leave the
key in the ignition and park your vehicle, a chime
will sound, when you open the driver’s door. Always
remember to remove your key from the ignition and take
it with you. This will lock your ignition and transmission.
Also, always remember to lock the doors.
The battery could be drained if you leave the key in the
ignition while your vehicle is parked. You may not be
able to start your vehicle after it has been parked for an
extended period of time.
2-19

Automatic Transmission Operation
The automatic transmission has a shift lever on the
console.
It features an electronic shift position indicator within
the instrument cluster. This display must be powered
anytime the shift lever is capable of being moved out of
PARK (P). This means that if your key is turned off,
but not in LOCK, there will be a small current drain on
your battery which could discharge your battery over
a period of time. If you need to leave your key in
the ignition but not in LOCK for an extended period,
it is recommended that you disconnect the battery cable
from the battery to prevent discharging your battery.
There are several different positions for your shift lever.PARK (P):This position locks your rear wheels. It is
the best position to use when you start the engine
because your vehicle cannot move easily.
{CAUTION:
It is dangerous to get out of your vehicle if
the shift lever is not fully in PARK (P) with the
parking brake rmly set. Your vehicle can roll.
Do not leave your vehicle when the engine is
running unless you have to. If you have left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure your
vehicle will not move, even when you are on
fairly level ground, always set your parking
brake and move the shift lever to PARK (P).
SeeShifting Into PARK (P) (Automatic
Transmission) on page 2-33. If you are pulling a
trailer, seeTowing a Trailer on page 4-50.
Make sure the shift lever is fully in PARK (P)
before starting the engine. Your vehicle has an
automatic transmission shift lock control system.
You must fully apply your regular brakes rst and
then press the shift lever button before you can
shift from PARK (P) when the ignition key is in ON.
2-23

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