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Cleaning the Mirror
When cleaning the mirror, use a paper towel or similar
material dampened with glass cleaner. Do not spray
glass cleaner directly on the mirror as that may cause
the liquid cleaner to enter the mirror housing.
Automatic Dimming Rearview Mirror
®
with OnStar
and Compass
Your vehicle may have an automatic dimming rearview
mirror with a compass display. The mirror also
®
contains OnStar
controls. For more information see
®
OnStar
System on page 2-46.
The automatic dimming feature functions the same as
that of the automatic dimming rearview mirror without a
compass. See Automatic Dimming Rearview Mirror
®
with OnStar
on page 2-41.
The mirror also includes an eight-point compass display
in the upper right corner of the mirror face. When on,
the compass automatically calibrates as the vehicle
is driven.
2-42
Mirror Operation
O
(On/Off): Press and hold the button, located on the
lower left side of the mirror face, for about three
seconds to turn the automatic dimming feature on or off.
The indicator light will illuminate when this feature is
active. The automatic dimming feature is active
each time the vehicle is started.
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 about
two seconds. After two seconds, the mirror will display
the compass heading.
Compass Calibration
If after two seconds, the display does not show a
compass heading (for example, N for North), there may
be a strong magnetic field interfering with the compass.
Such interference may be caused by a magnetic antenna
mount, magnetic note pad holder or a similar magnetic
item. If the letter C should ever appear in the compass
window, the compass may need calibration.
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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