GMC 2006 Sierra - Manual (Page 192)

Headlamps
The control on the driver’s side of your instrument panel
operates the headlamps.
Turn the control clockwise to operate the lamps.
The headlamp control has four positions:
9 (Off): Turning the control to this position turns off
the Daytime Running Lamps (DRL) and the automatic
headlamps.
AUTO (Automatic): Turning the control to this position
puts the system into automatic headlamp mode.
; (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
• Roof Marker Lamps (If Equipped)
5 (Headlamps): Turning the control to this position
turns on the headlamps, together with the previously
listed lamps and lights.
You can switch your headlamps from high to low-beam
by pushing the turn signal/high-beam lever towards the
instrument panel.
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.
Headlamps on Reminder
A reminder chime will sound when your headlamps or
parking lamps are manually turned on and your ignition is
off, in LOCK, ACCESSORY, or a door is open. To disable
the chime, turn the light off then back on.
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