GM Chevrolet Avalanche - Manual (Page 119)

Automatic Dimming Mirror Operation
Press and hold the TEMP button for approximately
eight seconds to turn the automatic dimming feature on
or off. The indicator light to the left of the TEMP
button will turn on or off to indicate when the feature is
on. Once the mirror is turned off, it will remain off
until it is turned back on, or until the vehicle is restarted.
Compass Operation
Press the COMP button once briefly to turn the compass
on or off.
When the ignition is started and the compass feature is
on, the compass will show two character boxes for
approximately two seconds. After two seconds,
the mirror will display the compass heading.
Compass Calibration
The compass may need calibration if one of the
following occurs:
• If CAL is displayed while driving in the vehicle.
• After approximately five seconds, the display does
not show a compass heading, 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, magnetic
note pad holder, or a similar magnetic item.
• The compass does not display the correct heading
and the compass zone variance is set correctly.
In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed, push
in the COMP button for approximately eight seconds
or until CAL is displayed.
The compass 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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