2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 366

u (Next Track/Chapter): Press this button to go to the beginning of the next chapter or track. This button might not work while the DVD is playing the copyright information or the previews. r (Fast Reverse): Press this button to quickly reverse the DVD or CD. To stop fast reversing a DVD video, press the play/pause button. To stop fast reversing a DVD audio or CD, release the fast reverse button. This button might not work when the DVD is playing the copyright information or the previews. [ (Fast Forward): Press this button to fast forward the DVD or CD. To stop fast forwarding a DVD video, press the play/pause button. To stop fast forwarding a DVD audio or CD, release the fast forward button. This button might not work while the DVD is playing the copyright information or the previews. Press this button to change audio tracks on DVDs that have this feature when the DVD is playing. The format and content of this function vary for each disc. { (Subtitles): Press this button to turn ON/OFF subtitles and to move through subtitle options when a DVD is playing. The format and content of this function vary for each disc. AUX (Auxiliary): Press this button to switch the system between the DVD player and an auxiliary source. d (Camera): Press this button to change camera angles on DVDs that have this feature while a DVD is playing. The format and content of this function vary for each disc. 1 through 0 (Numeric Keypad): The numeric keypad provides the capability of direct chapter or track number selection. \ (Clear): e (Audio): Press this button within three seconds after entering a numeric selection, to clear all numerical inputs. Press this button to select chapter or track numbers greater than nine. Press this button before entering the number. } 10 (Double Digit Entries): 4-142