Chevrolet 2007 TrailBlazer Owner's Manua page 277

If these problems occur, check the bottom surface
of the CD. If the surface of the CD is damaged,
such as cracked, broken, or scratched, the CD does
not play properly. If the surface of the CD is soiled,
see Care of Your CDs and DVDs on page 302 for
more information.
If there is no apparent damage, try a known
good CD.
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.
Notice: If a label is added to a CD, or more
than one CD is inserted into the slot at a
time, or an attempt is made to play scratched
or damaged CDs, the CD player could be
damaged. While 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 displays, see "CD Messages" later in
this section.
x
1 FLD (Previous Folder): Press the
x
pushbutton to go to the first track in the previous
x
folder. Press the button while in folder random
to go to the first track in the previous folder
and random the tracks in that folder.
w
2 FLD (Next Folder): Press the
to go to the first track in the next folder. Press
w
the button while in folder random to go 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 displays.
w
pushbutton
277