Compass Magnetic Variation Adjustment

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

Fig 1: Illustrating Magnetic Variation Zones
Courtesy of GENERAL MOTORS CORP.
1. Turn ON the ignition, with the engine OFF.
2. Press the option button until - PRESS SET/RESET TO CHANGE COMPASS ZONE - is displayed on the DIC.
3. Locate your vehicle's current location and variance zone number on the map. Zones 1 through 15 are available.
4. Scroll through and select the appropriate variance zone using the set/reset button. To view the direction the vehicle is moving, navigate to one of the trip/fuel menu screens using the DIC fuel information button and the direction will be shown at the right top corner of the DIC display.

If the compass needs to be calibrated, use the compass calibration procedure below.