2007 HUMMER H3 radio

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 162.
Vehicles rst sold in Canada cannot turn
off DRL unless certain conditions are met.
SeeExterior Lamps on page 162.
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.
165

Fog Lamps
Your vehicle has fog lamps. You can use them
for better vision in foggy or misty conditions.
Your parking lamps and/or low-beam headlamps
must be on for your fog lamps to work.
The fog lamp button
is located in the
exterior lamps control.
Press the button to turn the fog lamps on while
the headlamps or parking lamps are on. Press the
button again to turn them off. An indicator light
will glow in the button when the fog lamps are on.
Remember, fog lamps alone will not give off as
much light as your headlamps. Never use your fog
lamps in the dark without turning on the headlamps.
The fog lamps will go off whenever your
high-beam headlamps come on. When the high
beams go off, the fog lamps will come on again.
Some localities have laws that require the
headlamps to be on along with the fog lamps.
Instrument Panel Brightness
D(Instrument Panel Brightness):This feature
controls the brightness of the instrument panel
lights.
The thumbwheel for this feature is located next to
the exterior lamp control.
Turn the thumbwheel up or down to brighten or
dim the instrument panel lights and the radio
display. The instrument panel lights, cluster, and
radio display do not dim to complete darkness.
Turn the thumbwheel all the way up to turn
the dome lamps on.
Dome Lamp
The dome and footwell lamps will come on when
you open a door. The dome lamps are located
in the cargo and front area of the vehicle.
You can also turn the dome and footwell lamps
on by turning the thumbwheel, located next to
the exterior lamps control, all the way up. In this
position, the lamps will remain on whether a
door is opened or closed.
167

Battery Run-Down Protection
This feature shuts off the dome lamp if it is left
on for more than 20 minutes when the ignition
is in LOCK. This will help prevent your battery
from running down.
Accessory Power Outlet(s)
Your vehicle has accessory power outlets.
With accessory power outlets you can plug in
auxiliary electrical equipment such as a cellular
telephone or CB radio.
Your vehicle has two accessory power outlets
located on the lower part of the instrument panel
below the climate control system and there
may be one located in the rear cargo area.
A small cap must be pulled down to access an
accessory power outlet. When not using an outlet,
be sure to cover it with the protective cap.
Notice:Leaving electrical equipment on for
extended periods will drain the battery. Always
unplug electrical equipment when not in use
and do not plug in equipment that exceeds the
maximum amperage rating of 20 amperes.Certain electrical accessories may not be
compatible with the accessory power outlet and
could result in blown vehicle or adapter fuses.
If you experience a problem, see your dealer for
additional information on accessory power outlets.
Notice:Adding any electrical equipment to
your vehicle may damage it or keep other
components from working as they should.
The repairs would not be covered by your
warranty. Do not use equipment exceeding
maximum amperage rating of 20 amperes.
Check with your dealer before adding electrical
equipment.
When adding electrical equipment, be sure to
follow the proper installation instructions included
with the equipment.
Notice:Improper use of the power outlet
can cause damage not covered by your
warranty. Do not hang any type of accessory
or accessory bracket from the plug because
the power outlets are designed for accessory
power plugs only.
169

Battery Warning Light
This light will come on
briey when you start
the vehicle, as a
check to show you
it is working; then
it should go out.
If it stays on, or comes on while you are driving,
you may have a problem with the electrical
charging system. Have it checked right away.
Driving while this light is on could drain your
battery and result in a vehicle that may stall.
SeeDIC Warnings and Messages on page 196
for more information.
If you must drive a short distance with the light
on, be certain to turn off all your accessories,
such as the radio and climate control system.
Up-Shift Light
(Manual Transmission)
This light appears when
you need to shift to the
next higher gear on
a manual transmission
vehicle.
Shifting when the indicator light is on will help you
get the best fuel economy. See “Up-Shift Light”
underManual Transmission Operation on
page 109for more information.
181

Audio System(s)
Determine which radio your vehicle has and then
read the pages following to familiarize yourself
with its features.
Driving without distraction is a necessity for a
safer driving experience. SeeDefensive Driving on
page 234. By taking a few moments to read this
manual and get familiar with your vehicle’s
audio system, you can use it with less effort, as
well as take advantage of its features. While your
vehicle is parked, set up your audio system by
presetting your favorite radio stations, setting the
tone and adjusting the speakers. Then, when
driving conditions permit, you can tune to
your favorite stations using the presets and
steering wheel controls if the vehicle has them.{CAUTION:
This system provides you with a far greater
access to audio stations and song listings.
Giving extended attention to entertainment
tasks while driving can cause a crash and
you or others can be injured or killed.
Always keep your eyes on the road and
your mind on the drive — avoid engaging
in extended searching while driving.
Keeping your mind on the drive is important for
safe driving. For more information, seeDefensive
Driving on page 234.
201

Here are some ways in which you can help avoid
distraction while driving.
While your vehicle is parked:
Familiarize yourself with all of its controls.
Familiarize yourself with its operation.
Set up your audio system by presetting your
favorite radio stations, setting the tone, and
adjusting the speakers. Then, when driving
conditions permit, you can tune to your favorite
radio stations using the presets and steering
wheel controls if the vehicle has them.
Notice:Before adding any sound equipment
to your vehicle, such as an audio system,
CD player, CB radio, mobile telephone, or
two-way radio, make sure that it can be added
by checking with your dealer. Also, check
federal rules covering mobile radio and
telephone units. If sound equipment can be
added, it is very important to do it properly.Added sound equipment may interfere with
the operation of your vehicle’s engine, radio,
or other systems, and even damage them.
Your vehicle’s systems may interfere with
the operation of sound equipment that has
been added.
Your vehicle has a feature called Retained
Accessory Power (RAP). With RAP, the audio
system can be played even after the ignition
is turned off. SeeRetained Accessory Power
(RAP) on page 103for more information.
Setting the Time
Press and hold H until the correct hour appears
on the display. AM or PM will appear on the
display (Radio with CD (UpLevel, MP3, and
Six-Disc CD)). Press and hold M until the correct
minute appears on the display. The time can
be set with the ignition on or off.
202

Radio with CDXM™ Satellite Radio Service
XM™ is a satellite radio service that is based in
the 48 contiguous United States and Canada.
XM™ offers a large variety of coast-to-coast
channels including music, news, sports, talk,
traffic/weather (U.S. subscribers), and children’s
programming. XM™ provides digital quality
audio and text information that includes song title
and artist name. A service fee is required in
order to receive the XM™ service. For more
information, contact XM™; In the U.S. at
www.xmradio.com or call 1-800-852-XMXM (9696)
or in Canada at www.xmradio.ca or call
1-877-GET-XMSR (438-9677).
Playing the Radio
P
(Power/Volume):Press this knob to turn the
system on and off.
Turn this knob clockwise or counterclockwise to
increase or to decrease the volume.
DISP (Display):Press this button to switch the
display between the radio station frequency
and the time. When the ignition is turned off,
press this knob to display the time.
Radio with Single CD shown, Radio with
Single CD (MP3) similar
203

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 this
button 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 any speed.
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 this button until
AVOL OFF displays.Finding a Station
BAND:Press this button to switch between FM1,
FM2, AM, or XM1 or XM2 (if equipped). The
display shows the selection.
e(Tune):Turn this knob to select radio stations.
tSEEKu:Press and release the right or
the left arrow 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 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 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.
204