To adjust for compass variance, use the following procedure:

1.Press the menu button until COMPASS ZONE displays.

2.Find the vehicle’s current location and variance zone number on the map.

3.Press the set/reset button to scroll through and select the appropriate variance zone.

4.Press the menu button to advance to the COMPASS CALIBRATION screen.

5.To start the compass calibration, press and hold the set/reset button until CALIBRATION BEGUN DRIVE UNTIL DONE appears in the DIC display.

6.Drive the vehicle slowly in a circle two times to activate the compass.

When the calibration is complete, the DIC will display CALIBRATION FINISHED.

7.If the message CAL appears in the DIC, you must manually put the compass into the calibration mode again. Repeat Steps 1 through 6.

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Buick 2006 manual