Power (PWR)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Press the PWR button in order to turn the rear seat audio system ON or OFF. The rear speakers mute when the power is turned ON unless you have a Bose equipped vehicle. The rear seat audio functions are operable even when the primary radio power is OFF.