GMC 1997 Safari Owner's Manual page 112

Rotate the knob clockwise again to the master
lighting symbol to turn on all the lamps listed as
well as the headlamps.
Rotate the knob counterclockwise to OFF to turn off
your lamps.
Headlamps On Reminder
A reminder tone will sound when your headlamps or
parking lamps are turned on and your ignition is in the
OFF, LOCK or ACCESSORY position. To turn the tone
off, turn the switch to OFF.
Rotate the dial next to the knob up to adjust your
instrument panel lights. Rotate the dial up to the first
notch for full intensity. If you rotate the dial to the
second notch, your interior lamps will come on.
Rotate the dial next to the lamp switch down to dim
your instrument panel lights.
Headlamps
You can switch your headlamps from high to low beam
by pulling the multifunction lever toward you.
A circuit breaker protects your headlamps. If you have
an electrical overload, your headlamps will flicker on
and off. Have your headlamp wiring checked right away
if this happens.
Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier
for others to see the front of your vehicle during the
day. DRL, can be helpful in many different driving
conditions, but they can be especially helpful in the
short periods after dawn and before sunset.
The DRL system will make your headlamps come on at
a reduced brightness when:
0
the ignition is on,
0
the headlamp switch is off and
0
the parking brake is released.
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