light HUMMER H3 2010 Workshop Manual

Lighting 6-3
Exterior Lamps Off
Reminder
A headlamp reminder chime will
sound if the following conditions
are met:
.The driver door is open.
.Parking lamps or headlamps are
manually turned on.
.The key is either not in the
ignition switch, or it is in the
LOCK/OFF position of the
ignition switch.
The headlamp reminder cannot be
turned off if the conditions listed
above are met.
In the automatic mode, the
headlamps turn off once the ignition
is in ACC/ACCESSORY.
Headlamp High/
Low-Beam Changer
2 3
Headlamp High/Low Beam
Changer: Push the turn signal/lane
change lever away from you to turn
the high beams on.
Pull the lever towards you to return
to low beams.
This indicator light turns on in the
instrument panel cluster when the
high beam headlamps are on.
Flash-to-Pass
Pull the turn signal lever toward you,
then release it, to signal that you are
going to pass.
If the headlamps are in the
automatic position or on low beam,
the high-beam headlamps will turn
on. They stay on as long as the
lever is held toward you. The
high-beam indicator on the
instrument panel cluster will come
on. Release the lever to return to
normal operation.
Daytime Running
Lamps (DRL)
Daytime Running Lamps (DRL) can
make it easier for others to see the
front of your vehicle during the day.
Fully functional daytime running
lamps are required on all vehicles
first sold in Canada.

6-4 Lighting
The DRL system comes on when
the following conditions are met:
.The ignition is on.
.The exterior lamps control is
in AUTO.
.The transmission is not in
P (Park), if the vehicle has 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
first sold in Canada, if parking lamps
are manually turned on, DRL will
stay on.
When it begins to get dark, the
automatic headlamp system
changes from DRL to the
headlamps.
The regular headlamp system
should be turned on when needed.
To turn off the DRL, see Exterior
Lamp Controls
on page 6‑1. Vehicles first sold in Canada
cannot turn off DRL unless certain
conditions are met. See
Exterior
Lamp Controls on page 6‑1.
Automatic Headlamp
System
When it is dark enough outside, the
automatic headlamp system turns
on after the transmission has been
shifted from P (Park) to D (Drive).
The headlamps, taillamps,
sidemarker, parking lamps, roof
marker lamps, and the instrument
panel lights turn on at normal
brightness. The radio lights will
become dimmer when the
headlights are off compared to
when the headlights are on.
The vehicle has a light sensor
located on the top of the instrument
panel. Do not cover the sensor,
or the system will be on whenever
the ignition is on. The system can turn on the
headlamps when driving in a
parking garage, through a tunnel or
when there is overcast weather.
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.
If the vehicle is started in a dark
garage, the automatic headlamp
system comes on immediately.
Once the vehicle leaves the garage,
it takes about one minute for the
automatic headlamp system to
change to DRL if it is light outside.

Lighting 6-5
During that delay, the instrument
panel cluster may not be as bright
as usual. Make sure the instrument
panel brightness control is in the
full bright position. SeeInstrument
Panel Illumination Control
on
page 6‑7.
Hazard Warning Flashers
|
(Hazard Warning Flasher):
Press this button located on the
instrument panel, to make the front
and rear turn signal lamps flash on
and off. This warns others that you
are having trouble.
Press
|again to turn the
flashers off.
Turn and Lane-Change
Signals
An arrow on the instrument panel
cluster flashes in the direction of the
turn or lane change.
Move the lever all the way up or
down to signal a turn.
Raise or lower the lever until the
arrow starts to flash to signal a
lane change. Hold it there until the
change is completed. The lever returns to its starting
position whenever it is released.
If after signaling a turn or a lane
change the arrow flashes rapidly or
does not come on, a signal bulb
may be burned out.
Have the bulbs replaced. If the bulb
is not burned out, check the fuse.
For bulb replacement, see
Bulb
Replacement
on page 10‑35. For a
blown fuse or circuit breaker, see
Fuses and Circuit Breakers
on
page 10‑39.
Turn Signal On Chime
If a turn signal is left on for more
than 3/4 of a mile (1.2 km), a chime
sounds at each flash of the turn
signal and the message TURN
SIGNAL will also appear in the DIC.
To turn the chime and message off,
move the turn signal lever to the off
position.
See “TURN SIGNAL” underLamp
Messages on page 5‑24.

6-6 Lighting
Fog Lamps
The fog lamp button is located in the
exterior lamps control.
#(Fog Lamps):The headlamps
or parking lamps must be on for the
fog lamps to work. Press
#to turn
the fog lamps on or off. An indicator
light turns on when the fog lamps
are on.
Never use the fog lamps in the dark
without turning on the headlamps.
When the high-beam headlamps
are turned on, the fog lamps turn off
automatically. When the high-beam
headlamps are turned off, the fog
lamps come on again.
Some localities have laws that
require the headlamps to be on
along with the fog lamps.
Off-Road Lamps
For vehicles with off-road lamps,
they provide auxiliary lighting when
the vehicle is used off road. These
lamps are not intended to be used
in place of existing vehicle lighting.
They are not to be used on any
public street or highway and are to
be covered when not in use. Check
your state and local laws before
installing or using any auxiliary
lighting. In some states it may be
necessary to remove the roof lamps
when operating the vehicle on the
highway.
The off-road lamps button is located
on the instrument panel below the
climate controls.
Remove the covers from the lamps
and press the button to turn them
on or off. An indicator light turns on
when the lamps are on.

Lighting 6-7
Notice:Turning on the off-road
lamps before removing the lamp
covers could damage the off-road
lamps and the covers. Always
remove the covers before turning
on the off-road lamps.
The off-road lamps remain on even
after the ignition is turned off. The
off-road lamp button must be
pressed to turn them off.Interior Lighting
Instrument Panel
Illumination Control
The instrument panel brightness
thumbwheel is next to the exterior
lamp control.
D (Instrument Panel
Brightness): 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 Lamps
The dome lamps are located in the
front area of the vehicle. There is
also a dome lamp in the cargo area
of the H3 model only.
Turn the thumbwheel, located next
to the exterior lamps control, all
the way up to turn the dome and
footwell lamps on.
The dome lamp in the cargo area
automatically turns off when:
.The shift lever is shifted
out of P (Park) (automatic
transmissions).
.The parking brake is released
(manual transmissions).

6-8 Lighting
Dome Lamp Override
The dome lamp override button is
located below the exterior lamps
control.
E(Dome Lamp Override): Press
the button in to turn the lamps off.
In this position, the dome lamps will
remain off when the doors are open.
To return the lamps to automatic
operation, press
Eagain and
return it to the out position. With the
button in this position, the dome
lamps will come on when a door is
opened.
Reading Lamps
The reading lamps are located in
the overhead console.
Press the button located next to
each lamp to turn them on or off.
These lamps will not come on with
the dome lamps.
Lighting Features
Exit Lighting
The interior lamps come on when
the key is removed from the ignition.
The lamps will not come on if the
dome override button is pressed in.
Battery Load
Management
The vehicle has Electric Power
Management (EPM) that estimates
the battery's temperature and state
of charge. It then adjusts the voltage
for best performance and extended
life of the battery. When the battery's state of charge
is low, the voltage is raised slightly
to quickly bring the charge back up.
When the state of charge is high,
the voltage is lowered slightly to
prevent overcharging. If the vehicle
has a voltmeter gauge or a voltage
display on the Driver Information
Center (DIC), you may see the
voltage move up or down. This is
normal. If there is a problem, an
alert will be displayed.
The battery can be discharged at
idle if the electrical loads are very
high. This is true for all vehicles.
This is because the generator
(alternator) may not be spinning fast
enough at idle to produce all the
power that is needed for very high
electrical loads.

Lighting 6-9
A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, fog
lamps, rear window defogger,
climate control fan at high speed,
heated seats, engine cooling fans,
trailer loads, and loads plugged into
accessory power outlets.
EPM works to prevent excessive
discharge of the battery. It does this
by balancing the generator's output
and the vehicle's electrical needs.
It can increase engine idle speed to
generate more power, whenever
needed. It can temporarily reduce
the power demands of some
accessories.Normally, these actions occur in
steps or levels, without being
noticeable. In rare cases at the
highest levels of corrective action,
this action may be noticeable to the
driver. If so, a Driver Information
Center (DIC) message might be
displayed, such as BATTERY
SAVER ACTIVE, BATTERY
VOLTAGE LOW, or LOW BATTERY.
If one of these messages displays,
it is recommended that the driver
reduce the electrical loads as much
as possible. See
Driver Information
Center (DIC) on page 5‑18.Battery Power Protection
The dome lamp is shut off if it is left
on for more than 20 minutes when
the ignition is in LOCK/OFF. This
helps to prevent the battery from
being drained.

6-10 Lighting
2NOTES

7-2 Infotainment System
Theft-Deterrent Feature
THEFTLOCK®is designed to
discourage theft of the vehicle's
radio by learning a portion of the
Vehicle Identification Number (VIN).
The radio does not operate and
LOCKED displays if the radio is
stolen or moved to a different
vehicle.
When the ignition is in the off
position, a blinking red light on the
upper left side of the radio indicates
that THEFTLOCK
®is armed.
Operation
Single CD Radio

7-10 Infotainment System
Fixed Mast Antenna
The fixed mast antenna can
withstand most car washes without
being damaged as long as it is
securely attached to the base.
If the mast becomes slightly bent,
straighten it out by hand. If the mast
is badly bent, replace it.
Occasionally check to make sure
the antenna is tightened to its base.
If tightening is required, tighten
by hand until fully seated plus
one quarter turn.
Satellite Radio Antenna
The XM Satellite Radio antenna is
located on the roof of the vehicle.
Keep the antenna clear of
obstructions for clear radio
reception.
If the vehicle has a sunroof, the
performance of the XM system may
be affected if the sunroof is open.
Audio Players
CD Player
The CD player can play smaller
8 cm (3 in) single CDs with an
adapter ring.
A CD in the player it stays in the
player when the ignition is turned
off. When the ignition or radio is
turned on, the CD starts to play
where it stopped, if it was the last
selected audio source.
Care of CDs
Store CDs in their original cases or
other protective cases and away
from direct sunlight and dust. The
CD player scans the bottom of
the disc. If the bottom of a CD is
damaged it may not play properly or
at all. Do not touch the bottom of a
CD while handling it. Pick up CDs
by grasping the outer edges or the
edge of the hole and the outer edge.
If the surface of a CD is dirty, take
a soft, lint free cloth or dampen a
clean, soft cloth in a mild, neutraldetergent solution mixed with water,
and clean it. Make sure the wiping
process starts from the center to
the edge.
Care of the CD Player
Do not add labels to a CD, it could
get caught in the CD player. Use a
marking pen to write on the top of
the CD if a description is needed.
Do not use CD lens cleaners, they
could damage the CD player.
Notice:
If a label is added to a
CD, or more than one CD is
inserted into the slot at a time,
or an attempt is made to play
scratched or damaged CDs, the
CD player could be damaged.
While using the CD player, use
only CDs in good condition
without any label, load one CD at
a time, and keep the CD player
and the loading slot free of
foreign materials, liquids, and
debris.
If an error displays, see “CD
Messages” later in this section.