Electronic Compass Module Programming and Setup
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2009 GMC Yukon XL, 2009 GMC Yukon, 2009 Chevrolet Tahoe, 2009 Chevrolet Suburban, and 2009 Chevrolet Avalanche. 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 .