
Automatic Headlamp System
When it is dark enough outside, the automatic headlamp
system will turn on the headlamps at the normal
brightness, along with the taillamps, sidemarker, parking
lamps, and the instrument panel lights. The radio
lights will also be dim.
To turn off the automatic headlamp system, turn the
exterior lamps switch to the off position and then release
it. For vehicles first sold in Canada, the transmission
must be in the PARK (P) position, before the automatic
headlamp system can be turned off.
The vehicle has a light sensor located on the top of the
instrument panel in the defroster grille that regulates
when the automatic headlamps turn on. Be sure it is not
covered, or the headlamps will come 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 systems 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 takes approximately
one minute for the automatic headlamp system to
change to DRL if it is bright enough 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. See Instrument Panel
Brightness on page 3-19.
To idle the vehicle with the automatic headlamp system
off, turn the control to the off position.
The headlamps will also stay on after you exit the
vehicle. This feature can be programmed using the
Driver Information Center (DIC). See DIC Vehicle
Customization (With DIC Buttons) on page 3-73.
The regular headlamp system can be turned on
when needed.
Fog Lamps
-
(Fog Lamps): If your vehicle has fog lamps, the
control is located next to the exterior lamps control on the
instrument panel to the left of the steering column.
The ignition must be in the ON/RUN position for the
fog lamps to come on.
Press the button to turn the fog lamps on or off. A light
will come on in the instrument panel cluster.
3-18
Summary of Contents for 2008 Tahoe
Page 98: ... NOTES 1 94 ...
Page 174: ... NOTES 2 76 ...
Page 177: ... NOTES 3 3 ...
Page 178: ...Instrument Panel Overview United States version shown Canada similar 3 4 ...
Page 364: ... NOTES 4 64 ...
Page 528: ... NOTES 7 18 ...