Chevrolet Suburban 2007 Owner's Manual page 296

If the ignition or radio is turned off, with a CD in
the player, it will stay in the player. When the
ignition or 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 CD. 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, check the
bottom surface of the CD. If the surface of the CD
is damaged, such as cracked, broken, or
scratched, the CD will not play properly. If the
surface of the CD is soiled, see Care of Your CDs
and DVDs on page 347 for more information.
If there is no apparent damage, try a known
good CD.
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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.
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 soft marker instead.
If an error appears on the display, see "CD
Messages" later in this section.
EJECT: Press the CD eject button to eject
Z
CD(s). To eject the CD that is currently playing,
press and release this button. You will hear a beep
and Ejecting Disc will be displayed. Once the
disc is ejected, Remove Disc will appear on
display. The CD can be removed. If the CD is not
removed, after several seconds, the CD will be
automatically pulled back into the player and begin
playing.