See also:

Accessories and Modifications
When you add non-GM accessories to your vehicle they can affect your vehicle’s performance and safety, including such things as, airbags, braking, stability, ride and handling, emissions systems, ...

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 ...

Using the Dial Command
1. Press and hold for two seconds. The system responds with “Ready” followed by a tone. 2. Say “Dial”. The system responds with “Dial using <phone name>”. “Number please” ...