Generally it should be automatic, but to enter manual mode
Manual Compass Calibration
NOTE: Before attempting a manual compass calibration,
the engine must be running and the transmission
in the P (Park) position (if equipped).
Compass calibration can also be requested. To manually
calibrate the compass, you must first enter the variance
mode. Press the and hold the left button (located on the
instrument cluster) for approximately 10 seconds to enter
the variance mode, and release the button when the VAR
symbol appears. The current variance value will also be
displayed. Once in the variance mode, it is necessary to
release the button, and then press and hold it again
(approximately 10 seconds) until CAL is displayed (solid
not blinking). Manual compass calibration has been
initiated. Drive the vehicle slowly in one or more circles
under 5 mph (8 km/h) in an area free from large metal
objects until the CAL symbol is extinguished.
When the CAL symbol no longer is displayed, the
compass is calibrated and should display correct headings.
Verify proper calibration by checking North (N),
South (S), East (E), andWest (W). If the compass does not
appear accurate, repeat the calibration procedure in another