Compass Variance - Pontiac 2004 Montana Owner's Manual

Off: No driver information is displayed in this mode of
operation.
Compass/Temperature Mode: One of eight compass
readings and the outside temperature are displayed.
If the temperature is below 38°F (3°C), the temperature
reading will toggle between displaying the outside
temperature and the word ICE for two minutes.
Trip Computer Mode: In the trip computer mode,
pressing the MODE button cycles through the five
displays. Press the MODE button after the last trip
computer display to return the DIC to the OFF mode.
See "Trip Computer" later in this section for more
information.

Compass Variance

Compass variance is the difference between magnetic
north and geographic north. In some areas of the
country, the difference is great enough to cause the
compass to give false readings. If this occurs, the
compass variance must be set.
Setting the Variance
Turn the ignition on and cycle the DIC to the
compass/temperature mode. Press both the E/M and
MODE buttons simultaneously for about five seconds.
The last entered variance zone number will be
displayed. Press the E/M button until the proper variance
number, as shown on the map, is showing. Press the
MODE button to set the new variance zone and resume
normal operation.
The display will show all the display segments briefly to
acknowledge the change in the zone number.
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