GMC 1996 Sierra Owner's Manual page 101

Lamps
Your parking lamp and
headlamp switch is on the
driver's side of your
instrument panel.
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Parking Lamps
Sidemarker Lamps
Clearance Lamps (If So Equipped)
Taillamps
License Plate Lamps
Instrument Panel Lights
Transfer Case Shift Indicator Light
(Four-Wheel-Drive Vehicles)
Rotate the knob clockwise again to the master lamp
symbol to turn on all the lamps listed as well as
the headlamps.
Rotate the knob counterclockwise to OFF to turn off
your, lamps.
Rotate the thumb wheel next to the knob up 'to
adjust
instrument panel lights. Rotate the thumb wheel up to
the first notch to return the radio display and gearshift
indicator LED display to full intensity when the
headlamps or parking lamps are on.
You can switch your headlamps from high to low beams
by pulling on the turn signalhigh-beam lever.
Headlamps On Reminder
A buzzer will sound when your headlamps are turned on
and the key is turned to the OFF, LOCK or
ACCESSORY position. If you need to use your
headlamps when the key is turned to OFF, LOCK or
ACCESSORY, the buzzer can be turned off by turning
the thumb wheel next to the parking lampheadlamp
knob all the way down.
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