Compass Calibration Procedure
1. Before calibrating the compass, make sure the compass zone is set to the variance zone in which the vehicle is located.
See “Compass Variance (Zone) Procedure” earlier in this section.
Do not operate any switches such as window, sunroof, climate controls, seats, etc.
during the calibration procedure.
2. Press the vehicle information button until PRESS 
TO CALIBRATE COMPASS displays.
3. Press the set/reset button to start the compass calibration.
4. The DIC will display CALIBRATING: DRIVE IN CIRCLES. Drive the vehicle in tight circles at less than 8 km/h (5 mph) to complete the calibration. The DIC will display CALIBRATION COMPLETE for a few seconds when the calibration is complete. The DIC display will then return to the previous menu.
See also:
Connections
OnStar Hands-Free Calling allows calls to be made and received from the vehicle. The vehicle can also be controlled from a cell phone through the OnStar mobile app. See www.onstar.com for coverage map ...
Immobilizer
See Radio Frequency Statement on page 13.21 for information regarding Part 15
of the Federal Communications Commission (FCC) rules and Industry Canada Standards
RSS-GEN/210/220/310. ...
Underbody Maintenance
Use plain water to flush dirt and debris from the vehicle's underbody.
Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop. ...