With RPO U2K or U42/U56
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
No audio output from the DVD player or Digital Radio Receiver (DRR).
Test for any AC voltage between the left or right audio signal circuits and audio common circuit at the radio connector. If no AC voltage is present, check for opens, shorts to battery positive or shorts to ground on left and right output circuit from the affected component. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. If no shorts or opens are located, replace the affected component. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming.