GMC 2003 Sonoma Owner's Manual page 196

3. Select the desired disc by pressing the numbered
pushbutton and then use the SEEK SCAN right
arrow button to locate the track that you want
to save. The track will begin to play.
4. Press and hold the SONG LIST button for two or
more seconds to save the track into memory.
When SONG LIST is pressed a beep will be heard
immediately. After two seconds of pressing
SONG LIST continuously, two beeps will sound to
confirm that the track has been saved.
5. Repeat Steps 3 and 4 for saving other selections.
If you attempt to save more than 20 selections,
S-LIST FULL will appear on the display.
To play the song list, press the SONG LIST button. One
beep will be heard and S-LIST will appear on the
display. The recorded tracks will begin to play in the
order that they were saved.
You may seek through the song list by using the SEEK
SCAN arrows. Seeking past the last saved track will
return you to the first saved track.
To delete tracks from the song list, perform the
following steps:
1. Turn the disc player on.
2. Press the SONG LIST button to turn song list on.
S-LIST will appear on the display.
3. Press the SEEK SCAN arrows to select the desired
track to be deleted.
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4. Press and hold the SONG LIST button for two
seconds. When pressing SONG LIST, one beep
will be heard immediately. After two seconds
of pressing the SONG LIST button continuously,
two beeps will be heard 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 will be added to the end of the list.
To delete the entire song list, perform the
following steps:
1. Turn the disc player on.
2. Press the SONG LIST button to turn song list on.
S-LIST will appear on the display.
3. Press and hold the SONG LIST button for more
than four seconds. A beep will be heard, followed
by two beeps after two seconds and a final beep will
be heard after four seconds. S-LIST EMPTY will
appear on the display indicating that the song
list has been deleted.
If a disc is ejected, and the song list contains saved
tracks from that disc, 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 will be heard and S-LIST will be removed from
the display.