See also:

Unable to Connect to OnStar Message
If there is limited cellular coverage or the cellular network has reached maximum capacity, this message may come on. Push to try the call again or try again after driving a few miles into another ce ...

Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer. If your vehicle has a diesel engine, see the Duramax diesel supplement for more informa ...

Disconnecting the RVC
The rear vision camera must be disconnected if the tailgate needs to be removed. To disconnect the camera: 1. Remove the license plate. 2. Disconnect the camera connectors from the chassis harness, ...