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To adjust for compass variance do the following:
1. Find the current location and variance zone number
on the following zone map.
2. Press and hold the on/off button until a zone
number appears in the display.
3. Once a zone number appears in the display, press
the on/off button quickly until the correct zone
number appears in the display. If C appears in
the compass window, the compass may need
calibration. See “Compass Calibration” explained
previously.
Manual Rearview Mirror with
OnStar
®
, Compass, and
Temperature Display
The vehicle may have a manual rearview mirror with
OnStar
®
and an eight-point compass and temperature
display located in the upper right.
Control buttons for the OnStar
®
system are at the
bottom of the mirror. See your GM dealer for more
information about the OnStar
®
system. Also, see
OnStar
®
System on page 2-52 for more information
about the services OnStar
®
provides.
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.
Mirror Operation
While sitting in a comfortable position, adjust the
rearview mirror so you can see clearly behind your
vehicle. Grip it in the center and move it up or down and
side to side. The day/night control, located at the
bottom of the mirror, adjusts the mirror to reduce
headlamp glare from behind during evening or dark
conditions. Push the control for daytime use; pull it for
night use.
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