2008 HUMMER H3 DIFF

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

To turn on the rear camera vision feature again, press
the right mirror button briey. The green light indicator
will illuminate. The rear camera vision system is
now enabled and the display will slide out from the
mirror normally.
To manually slide out the rear camera screen for
cleaning, do the following:
1. Place the vehicle shift lever in PARK (P).
2. Turn the ignition key to the ACCESSORY or
RUN position.
3. Press and hold the right mirror button for
ve seconds. The display will slide out from
the mirror for 30 seconds; the right green LED
indicator will remain illuminated. The camera
screen will not be on when it slides out of
the mirror.
4. If additional time is required for cleaning,
repeat step 3.
To resume normal operation, press the right button
momentarily while the rear camera screen is out or wait
30 seconds for screen to slide back into the mirror.
For more information on the automatic dimming,
compass, and temperature features of the mirror, see
Automatic Dimming Rearview Mirror with Compass
and Temperature Display on page 2-41.
{CAUTION:
The Rear Vision Camera (RVC) system does
not replace driver vision. RVC does not:
Detect objects that are outside the
camera’s eld of view, below the bumper,
or underneath the vehicle.
Detect children, pedestrians, bicyclists,
or pets.
Do not back the vehicle by only looking at the
rear vision camera screen, or use the screen
during longer, higher speed backing maneuvers
or where there could be cross-traffic. Your
judged distances using the screen will differ
from actual distances.
So if you do not use proper care before backing
up, you could hit a vehicle, child, pedestrian,
bicyclist, or pet, resulting in vehicle damage,
injury, or death. Even though the vehicle has
the RVC system, always check carefully before
backing up by checking behind your vehicle.
2-45

Area Displayed On Screen
The image is provided by the camera located on the
rear bumper.
The camera uses a special lens. The distance of the
image that appears on the screen differs from the actual
distance. The area displayed by the camera is limited.The camera does not display objects which are close
to either corner of the bumper or under the bumper.
The spare tire and carrier extends rearward of the rear
bumper. The area displayed on the screen may vary
according to vehicle orientation or road conditions.
Notice:The spare tire extends farther away from
rear of the vehicle than the trailer hitch shown
on rear vision camera display. Your spare tire could
hit an object even though there appears to be
enough distance on the display between the trailer
hitch and objects behind you causing vehicle or
property damage. Do not use this system to judge
the distance between the spare tire and objects
behind you.
The following illustration shows the eld of view that
the camera provides.
2-46

7. Firmly press and release the “Learn” or “Smart”
button. After you press this button, you will have
30 seconds to complete Step 8.
8. Immediately return to the vehicle. Firmly press
and hold the Universal Home Remote button,
chosen in Step 3 to control the garage door, for
two seconds, and then release it. If the garage door
does not move, press and hold the same button
a second time for two seconds, and then release it.
Again, if the door does not move, press and hold
the same button a third time for two seconds,
and then release.
The Universal Home Remote should now activate
the garage door.
To program the remaining two Universal Home
Remote buttons, begin with Step 2 of “Programming
the Universal Home Remote System.” Do not repeat
Step 1, as this will erase all previous programming
from the Universal Home Remote buttons.Gate Operator and Canadian
Programming
If you have questions or need help programming the
Universal Home Remote System, call 1-800-355-3515
or go to www.homelink.com.
Canadian radio-frequency laws require transmitter
signals to time out or quit after several seconds of
transmission. This may not be long enough for
Universal Home Remote to pick up the signal during
programming. Similarly, some U.S. gate operators
are manufactured to time out in the same manner.
If you live in Canada, or you are having difficulty
programming a gate operator or garage door opener
by using the “Programming Universal Home Remote”
procedures, regardless of where you live, replace
Step 3 under “Programming Universal Home Remote”
with the following:
Continue to press and hold the Universal Home Remote
button while you press and release every two seconds
(cycle) the hand-held transmitter button until the
frequency signal has been successfully accepted by the
Universal Home Remote. The Universal Home Remote
indicator light will ash slowly at rst and then rapidly.
Proceed with Step 4 under “Programming Universal
Home Remote” to complete.
2-55

Daytime Running Lamps (DRL)
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the
day. DRL can be helpful in many different driving
conditions, but they can be especially helpful in the short
periods after dawn and before sunset. Fully functional
daytime running lamps are required on all vehicles
rst sold in Canada.
The DRL system will come on when the following
conditions are met:
The ignition is on.
The exterior lamps control is in AUTO.
The transmission is not in PARK (P) if you have an
automatic transmission.
The light sensor determines it is daytime.
When the DRL are on, no other lamps are on. The
instrument panel will not be lit up either. For vehicles rst
sold in Canada, if parking lamps are manually turned
on, DRL will stay on.
When it begins to get dark, the automatic headlamp
system will switch from DRL to the headlamps.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
To turn off the DRL, seeExterior Lamps on page 3-15.Vehicles rst sold in Canada cannot turn off DRL unless
certain conditions are met. SeeExterior Lamps on
page 3-15.
Automatic Headlamp System
When it is dark enough outside, the automatic headlamp
system will turn on after the transmission has been
shifted from PARK (P) to DRIVE (D). The headlamps,
taillamps, sidemarker, parking lamps, roof marker lamps,
and the instrument panel lights will turn on at normal
brightness. The radio lights will become more dim when
the headlights are off compared to when the headlights
are on.
Your vehicle has a light sensor located on the top of the
instrument panel. Be sure it is not covered, or the
system will be on whenever the ignition is on.
The system may also turn on the headlamps when
driving through a parking garage, heavy overcast
weather, or a tunnel. This is normal.
There is a delay in the transition between the daytime
and nighttime operation of the Daytime Running
Lamps (DRL) and the automatic headlamp system so
that driving under bridges or bright overhead street lights
does not affect the system. The DRL and automatic
headlamp system will only be affected when the
light sensor detects a change in lighting lasting longer
than the delay.
3-17

Fuel Gage
When the ignition is on, the fuel gage tells you about
how much fuel you have remaining in the fuel tank.
Here are three things that some owners ask about. None
of these indicate a problem with your fuel gage:
At the gas station, the gas pump shuts off before
the gage reads full.
It takes a little more or less fuel to ll up than the
gage indicated. For example, the gage may have
indicated the tank was half full, but it actually took a
little more or less than half the tank’s capacity to
ll the tank.
The gage moves a little when you turn a corner or
speed up.When the fuel in the fuel tank is low, you will see a
LOW FUEL message on the Driver Information
Center (DIC) display. SeeDIC Warnings and Messages
on page 3-43for more information.
Driver Information Center (DIC)
The Driver Information Center (DIC) displays information
such as the trip odometer, personalization features,
and warning messages. The DIC display is located on
the instrument panel cluster.
DIC Operation and Displays
The Driver Information Center (DIC) comes on when the
ignition is on.
If a problem is detected, a warning message appears
on the display. Pressing and releasing the trip odometer
reset stem on the DIC acknowledges some current
warnings or service messages. Some messages only
clear after the required action has been taken.
The DIC has different modes which can be accessed by
pressing the trip odometer reset stem on the DIC.
These modes are explained in the following section.
The DIC trip odometer reset stem is located on
the instrument panel cluster next to the DIC display.
To scroll through the available functions, press
and release the reset stem. United States
Canada
3-40

Trip Information
Odometer
The odometer is automatically displayed on the DIC
when you start the vehicle. The odometer shows
the total distance the vehicle has been driven in either
miles for the United States or kilometers for Canada.
Trip Odometer
Press and release the reset stem until TRIP appears on
the DIC display. The trip odometer shows the current
distance traveled since the last reset of the trip odometer
in either miles for the United States or kilometers for
Canada.
To reset the trip odometer, press and hold the reset
stem until the display returns to zero.
Engine Oil Life System
With the engine off, turn the key to ON/RUN and
then press the reset stem until OIL LIFE RESET
appears — alternating between OIL LIFE and
RESET — on the DIC display. The CHANGE OIL
message alerts you to change the oil on a schedule
consistent with your driving conditions. Always reset the
OIL LIFE message after an oil change. To reset the
message, seeEngine Oil Life System on page 5-18.In addition to the engine oil life system monitoring the
oil life, additional maintenance is recommended in
the Maintenance Schedule in this manual. SeeEngine
Oil on page 5-15andScheduled Maintenance on
page 6-4for more information.
Language
This feature allows you to choose the language in which
the DIC display shows information.
To set your choice for this feature:
1. With the engine off, turn the key to ON/RUN, but do
not start the engine.
2. Close all doors so the DOORS message does not
display in the DIC.
3. Momentarily press and release the reset stem until
the current language is displayed: English (default),
Spanish, or French.
4. To select a different language, press and hold the
reset stem until the next language appears.
5. Repeat Step 4 until the desired language is
displayed. Once the desired language is shown on
the DIC display, the language is set.
6. To exit the language selection, momentarily press
and release the reset stem. All DIC messages will
now display in the language selected.
3-41

Playing the Radio
P
(Power/Volume):Press to turn the system on
and off.
Turn clockwise or counterclockwise to increase or to
decrease the volume.
DISP (Display):Press to switch the display between
the radio station frequency and the time. When the
ignition is turned off, press to display the time.
For XM™ (if equipped), press the DISP button while in
XM™ mode to retrieve four different categories of
information related to the current song or channel: Artist,
Song Title, Category or PTY (program type), Channel
Number/Channel Name.
To change the default on the display, press the DISP
button until you see the desired display, then hold
this knob for two seconds. The radio produces one beep
and the selected display becomes the default.
AUTO VOL (Automatic Volume):With automatic
volume, the audio system adjusts automatically to make
up for road and wind noise as you drive.
Set the volume at the desired level. Press to select
LOW, MEDIUM, or HIGH. Each higher setting allows for
more volume compensation at faster vehicle speeds.
Then as you drive, automatic volume increases
the volume, as necessary, to overcome noise at anyspeed. The volume level should always sound the same
to you as you drive. NONE displays if the radio cannot
determine the vehicle speed. To turn automatic
volume off, press until AVOL OFF displays.
Finding a Station
BAND:Press to switch between FM1, FM2, AM, or
XM1 or XM2 (if equipped). The selection displays.
e(Tune):Turn to select radio stations.
tSEEKu:Press and release the arrows to go to
the next or to the previous station and stay there.
To scan stations, press and hold either arrow for more
than two seconds. SCN or SCAN displays and the
radio produces one beep. The radio goes to a station,
plays for a few seconds, then goes to the next
station. Press either arrow again or one of the
pushbuttons to stop scanning presets.
To scan preset stations, press and hold either arrow for
more than four seconds. PSC or PSCN displays and
the radio produces two beeps. The radio goes to
a preset station, plays for a few seconds, then goes to
the next preset station. Press either arrow again or
one of the pushbuttons to stop scanning presets.
The radio only seeks and scans stations with a strong
signal that are in the selected band.
3-50