Circuit/System Description
WARNING: This page is about a different car, the 2012 GMC Terrain and 2012 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
When the radio is on, a discrete 12 V signal is supplied on the entertainment remote enable circuit to the Audio Amplifier, Color Info Display Module (if equipped), the Seatback Video Displays (if equipped), and the Active noise Cancellation Module (if equipped). This signal is used to control the power state of the components.