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Automatic Dimming Rearview Mirror
with OnStar
®
and Compass
The vehicle may have an automatic dimming
inside rearview mirror with a compass and
OnStar
®
controls. For more information about
OnStar
®
, see OnStar
®
System on page 137.
The mirror has an eight-point compass display in
the upper right corner of the mirror. When on,
the compass automatically calibrates, or sets the
driving direction, as the vehicle is driven. If the
vehicle has the navigation option, the direction the
vehicle is facing will be displayed on the
navigation screen.
O(On/Off): The on/off button is located on the
lower left side of the mirror and is used for
the automatic dimming and compass functions of
the rearview mirror.
Mirror Operation
The automatic dimming feature comes on each
time the vehicle is started.
To turn the automatic dimming feature on or off,
press the on/off button. The indicator light will
illuminate when this feature is on.
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
approximately two seconds. After two seconds,
the mirror will display the current compass
direction.
Compass Calibration
If after two 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.
The compass can be calibrated by pressing and
holding the on/off button until a C is shown in
the compass display.
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