GMC 2006 Envoy Owner's Manual page 237

Do not add any label to a CD, it could get caught in the
CD player. If a CD is recorded on a personal computer
and a description label is needed, try labeling the top of
the recorded CD with a marking pen instead.
Notice: If you add any label to a CD, insert more
than one CD into the slot at a time, or attempt
to play scratched or damaged CDs, you could
damage the CD player. When using the CD player,
use only CDs in good condition without any
label, load one CD at a time, and keep the CD player
and the loading slot free of foreign materials,
liquids, and debris.
If an error appears on the display, see "CD Messages"
later in this section.
x
1 FLD (Previous Folder): Press this pushbutton to
go to the first track in the previous folder. Pressing
this button while in folder random mode will take you to
the first track in the previous folder and random the
tracks in that folder.
w
2 FLD (Next Folder): Press this pushbutton to go
to the first track in the next folder. Pressing this
button while in folder random mode will take you to the
first track in the next folder and random the tracks in
that folder.
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
10 times the normal playing speed. Press and hold it for
more than two seconds to reverse at 20 times the
normal playing speed. Release this pushbutton to play
the passage. REV 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
10 times the normal playing speed. Press and hold it for
more than two seconds to advance at 20 times the
normal playing speed. Release this pushbutton to play
the passage. FWD and the elapsed time of the track
will appear on the display.
6 RDM (Random): To random the tracks in the current
folder or playlist, press and release this pushbutton.
FLDR RDM will appear on the display. Once all of the
tracks in the current folder or playlist have been
played the system will move on to the next folder or
playlist and play all of the tracks in random order.
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