GMC XL Automobile User Manual


 
To adjust for compass variance, do the following:
1. Find your current location and variance zone
number on the map.
2. Press and hold the on/off button for six seconds.
Release the button when ZONE is displayed.
The number shown is the current zone number.
3. Scroll through the zone numbers that appear in
the compass/temperature window on the mirror
by pressing the on/off button. Once you find your
zone number, release the button. After about
four seconds, the mirror will return to the compass
display, and the new zone number will be set.
Automatic Dimming Rearview Mirror
with Compass and Temperature
Display
If the vehicle is equipped with an automatic mirror,
it will, when on, automatically dim to the proper level
to minimize glare from lights behind you after dark.
The mirror also includes a display in the upper right
corner of the mirror face. The compass reading and the
outside temperature will both appear in the display at the
same time. The dual display can be turned on or off by
briefly pressing either the TEMP or the COMP button.
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