Hazard Warning Flashers; Turn And Lane-Change; Signals - GMC 2012 Sierra Denali Owner's Manual

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 Vehicle Personalization on
page 5 48.
The regular headlamp system can
be turned on when needed.

Hazard Warning Flashers

(Hazard Warning Flashers):
Press this button located on top of
the steering column, to make the
front and rear turn signal lamps
flash on and off. This warns others
that you are having trouble. Press
again to turn the flashers off.
When the hazard warning flashers
are on, the vehicle's turn signals will
not work.
Lighting

Turn and Lane-Change

Signals

An arrow on the instrument panel
cluster flashes in the direction of the
turn or lane change.
Move the lever all the way up or
down to signal a turn.
Raise or lower the lever until the
arrow starts to flash to signal a lane
change. Hold it there until the lane
change is completed.
The lever returns to its starting
position whenever it is released.
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