Electronic Compass Module Programming and Setup
WARNING: This page is about a different car, the 2011 GMC Sierra, 2011 GMC Cab & Chassis Sierra, 2011 Chevrolet Silverado, and 2011 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The electronic compass module requires a calibration after the module is replaced, repaired, or as required for proper module operation. Refer to Compass Calibration and Magnetic Variance (without OnStar Only) .