2004 Buick Rendezvous Owner's Manual - Page 200

Driver Information Center (DIC) 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 must be set. Automatic Compass Calibration If your vehicle is equipped with the Driver Information Center (DIC), the display is located on the instrument panel cluster in the tachometer gage. The DIC will show information about the vehicle and the surroundings. The DIC is capable of displaying English or French. See DIC Controls and Displays on page 3-62 to change the display from English to metric. The DIC contains a compass display to show you which direction the vehicle is driving. The compass is self-calibrating, which eliminates the need to manually set the compass. When the vehicle is new, the calibration process may not be complete. In these cases, the calibration symbol C will be displayed where the compass reading is normally displayed. To calibrate the compass, in an area free from large metal objects, make three 360 degree turns. The calibration symbol will turn off and the compass reading will be displayed. 3-60