2009 HUMMER H3 AUX

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Page 132 of 382

HUMMER H3 2009 Owners Manual Automatic Headlamp
System
When it is dark enough outside,
the automatic headlamp system
will turn on after the transmission
has been shifted from P (Park) to
D (Drive). The headlamps, taillamps,
sidem

Automatic Headlamp
System
When it is dark enough outside,
the automatic headlamp system
will turn 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 will come on immediately.
Once the vehicle leaves the garage,
it will take about one minute for
the automatic headlamp system to
change to DRL if it is light
outside. 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 Brightness on
page 3-15.
Off-Road Lamps
The off-road lamps, if the vehicle
has them, provide auxiliary lighting
when the vehicle is used off
road. These lamps are not intended
to be used in place of existing
vehicle lighting. The lamps 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.
3-14 Instrument Panel

Page 136 of 382

HUMMER H3 2009 Owners Manual Accessory Power
Outlet(s)
The accessory power outlets can be
used to connect auxiliary electrical
equipment, such as a cellular phone.
There are two accessory power
outlets located under the climate
c

Accessory Power
Outlet(s)
The accessory power outlets can be
used to connect auxiliary electrical
equipment, such as a cellular phone.
There are two accessory power
outlets located under the climate
control system. There is also one
accessory power outlet located in the
rear cargo area (H3 model only). Pull
down the small cover to access the
accessory power outlet.
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/retailer for additional
information on accessory power
outlets.
Notice:Adding any electrical
equipment to the vehicle can
damage it or keep other
components from working as
they should. The repairs would
not be covered by the vehicle
warranty. Do not use equipment
exceeding maximum amperage
rating of 20 amperes. Check with
your dealer/retailer 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 the 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.
Ashtray(s) and Cigarette
Lighter
For vehicles with a removable
ashtray, it can be placed into the
cupholder and be removed for
cleaning.
Notice:If papers, pins, or other
ammable items are put in
the ashtray, hot cigarettes or
other smoking materials could
ignite them and possibly damage
the vehicle. Never put ammable
items in the ashtray.
For vehicles with a lighter, push the
lighter down and it will pop up
when it is ready to be used.
Notice:Holding a cigarette
lighter in while it is heating does
not let the lighter back away from
the heating element when it is hot.
Damage from overheating can
occur to the lighter or heating
element, or a fuse could be blown.
Do not hold a cigarette lighter in
while it is heating.
3-18 Instrument Panel

Page 235 of 382

HUMMER H3 2009 Owners Manual Trailer Brake Control Wiring
Harness
The trailer brake control wiring
harness is located under the
instrument panel to the right of the
steering column. The wires are
taped to the harness that goes to

Page 330 of 382

HUMMER H3 2009 Owners Manual Fuse Usage
11 Not Used
12Transfer Case Control
Module
13 Radio
14 Body Control Module
15Rear Wiper Motor
(H3 Only)
16Rear Wiper Pump
Switch (H3 Only)
17Air Injection Reactor
(AIR) Pump Relay/
Transmis

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