Dome Lamps; Reading Lamps - GMC 2015 Sierra Denali Owner's Manual

mirrors turn on if the shift lever is in
the R (Reverse), N (Neutral),
or P (Park) position.

Dome Lamps

There are dome lamps in the
overhead console and the headliner,
if equipped.
To change the dome lamp settings,
press the following:
OFF: Turns the lamps off, even
when a door is open.
DOOR: The lamps come on
automatically when a door is
opened.
ON: Turns all dome lamps on.

Reading Lamps

There are reading lamps in the
overhead console and the headliner,
if equipped. To operate, the ignition
must be in the ACC/ACCESSORY
or ON/RUN position, or using
Retained Accessory Power (RAP).
Lighting
Press or next to each reading
lamp to turn it on or off.
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