2012 GMC Sierra Owner's Manual - Page 241

Infotainment System 7-31 q Group r : Press to cycle through musical groupings on the DVD-A disc. Nav (Navigate): Press to display directional arrows for navigating through the menus. Press to cycle through audio stream formats located on the DVD-A disc. The video screen shows the audio stream changing. The rear seat passenger can navigate the DVD-V and DVD-A menus and controls through the remote control. See "Remote Control" under Rear Seat Entertainment (RSE) System on page 7‑37 for more information. The video screen automatically turns on when the DVD-V is inserted into the DVD slot, and does not automatically power on when the DVD-A is inserted into the DVD slot. It must be manually turned on by the rear seat occupant through the remote control power button. Stopping and Resuming Playback To stop playing a DVD without turning off the system, press the c button on the remote control, or press the softkey located under the c or the r / j tabs displayed on the radio. If the radio is sourced to something other than DVD-V, press the DVD/CD AUX button to make DVD-V the active source. To resume DVD playback, press the r / j button on the remote control, or press the softkey located under the r / j tab on the radio. The DVD should resume play from where it last stopped if the disc has not been ejected and the stop button has not been pressed twice on the remote control. If the disc has been ejected or the stop button has been pressed twice on the remote control, the disc resumes playing at the beginning of the disc. CD/DVD Player Messages Disc Format Error: This message displays if the disc is inserted with the disc label wrong side up, or if the disc is damaged. Disc Region Error: This message displays if the disc is not from a correct region. No Disc Inserted: This message displays if no disc is present when the Z or DVD/CD AUX button is pressed on the radio. Optical Error: This message displays if the disc was inserted upside down. Disk Read Error: This message displays if a disc was inserted with an invalid or unknown format. e (Audio Stream):