Automatic Dimming Rearview Mirror
®
with OnStar
and Compass
Your vehicle may have an automatic dimming rearview
mirror with a compass and OnStar
more information about OnStar
on page 2-44.
The automatic dimming feature turns on each time
the vehicle is started. To turn automatic dimming off
or on, press the left button below the mirror. A green
indicator light will be on when automatic dimming is on.
There are also three OnStar
the bottom of the mirror. See your dealer for more
information on the system and how to subscribe
®
to OnStar
. See OnStar
more information about the service OnStar
®
controls. For
®
®
, see OnStar
System
®
buttons located at
®
System on page 2-44 for
®
provides.
Compass Operation
Press the on/off button once to turn the compass
on or off.
When the ignition and the compass feature are on,
the compass will show two character boxes for a
few seconds. After a few seconds, the mirror will
display the current compass direction.
Compass Calibration
If after a few seconds the display does not show a
compass direction, (N for North for example), there
may be a strong magnetic field interfering with the
compass. Such interference may be caused by a
magnetic antenna mount, note pad holder, or similar
object. If the letter C appears in the compass window,
the compass may need to be reset or calibrated.
The mirror can be calibrated by driving the vehicle in
circles at 5 mph (8 km/h) or less until the display reads
a direction.
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