Black plate (18,1)
GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
2-18
Keys, Doors, and Windows
Interior Mirrors
Manual Rearview Mirror
To adjust the inside rearview mirror,
hold the rearview mirror in the
center and move it to view the area
behind the vehicle.
For vehicles with a manual rearview
mirror, push the tab forward for
daytime use and pull it for nighttime
use to avoid glare from the
headlamps from behind.
Vehicles with OnStar
®
have three
control buttons at the bottom of the
mirror. See a dealer for more
information about OnStar and how
to subscribe to it. See
OnStar
Overview on page 14
‑
1
.
Automatic Dimming
Rearview Mirror
The vehicle may have an automatic
dimming inside rearview mirror.
To adjust the inside rearview mirror,
hold the rearview mirror in the
center and move it to view the area
behind the vehicle.
The automatic dimming rearview
mirror will automatically reduce the
glare from the headlamps from
behind. The dimming feature comes
on when the vehicle is started.
O
(On/Off):
Press to turn the
dimming feature on or off.
The vehicle may also have a Rear
Vision Camera (RVC). See
Rear
Vision Camera (RVC) on page 9
‑
62
for more information.
If the vehicle has a RVC,
the
O
button for turning the
dimming feature on or off will
not be available.
Vehicles with OnStar have three
additional control buttons for the
OnStar system. See a dealer for
more information about OnStar and
how to subscribe to it. See
OnStar
Overview on page 14
‑
1
.
Cleaning the Mirror
Do not spray glass cleaner directly
on the mirror. Use a soft towel
dampened with water.
