DVD Source Selection
WARNING: This page is about a different car, the 2007 Pontiac G6. However, it is still accessible from the selected car via links, so may be relevant.
The DVD player can be selected as the audio source after the radio determines that the DVD player is present and enables it. After this determination, the radio displays RSE on the SOURCE menu. The DVD player can only control starting and stopping of the player. The radio will not send play or stop commands when it connects to the DVD player.