2009 GMC Envoy Owner's Manual - Page 236

Remote Control Buttons z (Set-up Menu): Press to adjust the color, tint, brightness, contrast, display mode, and dynamic range compression. The dynamic range compression feature can be used to reduce loud audio and increase low audio produced by some DVDs. e (Audio): Press to display a menu that only appears while a DVD is being played. The format and content of this function will vary for each disc. r (Fast Reverse): Press to fast reverse the DVD or CD. To stop fast reversing, press again. This button might not work when the DVD is playing the copyright information or the previews. SRCE (Source): Press to switch between the DVD player and an auxiliary source. O (Power): Press to turn the DVD player on and off. v (Title): Press to return the DVD to the main menu of the DVD. n, q, p, o (Menu Navigation Arrows): arrows to navigate through a menu. Use the c (Stop): Press to stop playing, rewinding, or fast forwarding a DVD or CD. Press twice to return to the beginning of the DVD. t (Previous Track/Chapter): Press to return to the start of the current track or chapter. Press again to return to the previous track or chapter. This button might not work while the DVD is playing the copyright information or the previews. 3-104