Automatic Headlamp System - GMC Safari 2003 Owner's Manual

The exterior lamp control has three positions:
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(Off): Turning the control to this position turns off
all lamps except the Daytime Running Lamps (DRL).
;
(Parking Lamps): Turning the control to this
position turns on the parking lamps, together with the
following:
•
Sidemarker Lamps
•
Taillamps
•
License Plate Lamps
•
Instrument Panel Lights
•
Ashtray Lamp
O
(Headlamps): Turning the control to this position
turns on the headlamps, together with the previously
listed lamps and lights.

Automatic Headlamp System

When it is dark enough outside, your automatic
headlamp system will turn on your headlamps at the
normal brightness along with other lamps such as
the taillamps, sidemarker, parking lamps and the
instrument panel lights. The radio lights will also dim.
Your vehicle is equipped with a light sensor on the top of
the instrument panel in the defroster grille. Be sure it
is not covered, or the system will be on whenever
the ignition is on.
The system may also turn on your 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 sees a change in lighting lasting
longer than the delay.
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