GMC 2009 Envoy Denali Owner's Manual page 210

S-LIST FULL displays if more than 20 selections
are saved.
To play the song list, press the SONG LIST button.
One beep sounds and S-LIST displays. The recorded
tracks begin to play in the order they were saved.
Seek through the song list by using either SEEK or
TYPE arrow. Seeking past the last saved track returns
to the first saved track.
To delete tracks from the song list:
1. Turn the CD player on.
2. Press the SONG LIST button to turn song list on.
S-LIST displays.
3. Press either SEEK or TYPE arrow to select the
desired track to be deleted.
4. Press and hold the SONG LIST button for
two seconds. When SONG LIST is pressed,
one beep sounds. After two seconds of continuously
pressing the SONG LIST button, two beeps sound
to confirm that the track has been deleted.
After a track has been deleted, the remaining tracks are
moved up the list. When another track is added to
the song list, the track is added to the end of the list.
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To delete the entire song list:
1. Turn the CD player on.
2. Press the SONG LIST button to turn song list on.
S-LIST displays.
3. Press and hold the SONG LIST button for more
than four seconds. One beep sounds, followed by
two beeps after two seconds, and a final beep
sounds after four seconds. S-LIST EMPTY displays
indicating the song list has been deleted.
If a CD is ejected, and the song list contains saved
tracks from that CD, those tracks are automatically
deleted from the song list. Any tracks saved to the song
list again are added to the bottom of the list.
To end song list mode, press the SONG LIST button.
One beep sounds and S-LIST is removed from the
display.
Playing an MP3/WMA CD-R Disc
The vehicle's radio system may have the MP3/WMA
feature. If it has this feature, it is capable of playing an
MP3/WMA CD-R disc. For more information on how
to play an MP3/WMA CD-R disc, see Using an MP3
on page 3-80 later in this section.