Compass Magnetic Variation Adjustment

Magnetic variation adjustments are required when compass displays a constant error in heading. Variation is difference between magnetic north and true north due to geographical location.

1. Locate your current geographic location. Refer to variation zone map. See Fig 1.
2. Turn ignition switch to RUN position.
3. Press MODE button until compass/temperature mode is displayed.
4. Press and hold RESET button for about 5 seconds, or until last entered variation zone is displayed.
5. Press MODE button until correct zone number is displayed.
6. Press RESET button to set new variation zone. All segments will illuminate briefly to acknowledge change in zone number.

Fig 1: Identifying Variation Zones

Courtesy of GENERAL MOTORS CORP.