See also:

General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks: ...

Radio Messages
CAL ERR (Calibration Error): The audio system has been calibrated for your vehicle from the factory. If CAL ERR displays, it means that the radio has not been configured properly for the vehicle a ...

Compass
There is a compass display in the Driver Information Center (DIC). The compass receives its heading and other information from the Global Positioning System (GPS) antenna, StabiliTrak, and vehicle ...