2004 GMC Envoy Owner's Manual - Page 209

If the ignition or radio is turned off with the CD in the player, it will stay in the player. When the ignition or the radio is turned on, the CD will start playing, where it stopped, if it was the last selected audio source. When a CD is inserted, the CD symbol will appear on the display. As each new track starts to play, the track number will appear on the display. The CD player can play the smaller 3 inch (8 cm) single CDs with an adapter ring. Full-size CDs and the smaller CDs are loaded in the same manner. If playing a CD-R the sound quality may be reduced due to CD-R quality, the method of recording, the quality of the music that has been recorded, and the way the CD-R has been handled. There may be an increase in skipping, difficulty in finding tracks, and/or difficulty in loading and ejecting. If these problems occur try a known good CD. Do not add paper labels to CDs, they could get caught in the CD player. If an error appears on the display, see "CD Messages" later in this section. 1 PREV (Previous): Pressthis pushbutton to go to the current track if more than eight seconds have played. TRACK and the track number will appear on the display. If this pushbutton is held or pressed more than once, the player will continue moving backward through the CD. 2 NEXT: Press this pushbutton to go to the next track. TRACK and the track number will appear on the display. If this pushbutton is held or pressed more than once, the player will continue moving forward through the CD. 3 REV (Reverse): Press and hold this pushbutton to reverse quickly within a track. Press and hold this pushbutton for less than two seconds to reverse at six times the normal playing speed. Press and hold it for more than two seconds to reverse at 17 times the normal playing speed. Release this pushbutton to play the passage. ET and the elapsed time of the track will appear on the display. 4 FWD (Forward): Press and hold this pushbutton to advance quickly within a track. Press and hold this pushbutton for less than two seconds to advance at six times the normal playing speed. Press and hold it for more than two seconds to advance at 17 times the normal playing speed. Release this pushbutton to play the passage. ET and the elapsed time of the track will appear on the display. 6 RDM (Random): Press this pushbutton to hear the tracks in random, rather than sequential, order. RDM ON will appear on the display. RDM T and the track number will appear on the display when each track starts to play. Press this pushbutton again to turn off random play. RDM OFF will appear on the display. 3-89