CD AUX (CD) Control
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Press CD AUX to stop radio play and switch to disc play. Press TAPE AUX to switch back to playing tape.
If the remote compact disc changer (U1S) is included in the vehicle sound system, pressing TAPE AUX a second time will allow it to play.