GMC Canyon Owner's Manual page 224

Playing a CD
If the ignition or radio is turned off, with a CD in the
player, it stays in the player. When the ignition or
radio is turned on, the CD starts playing where it
stopped, if it was the last selected audio source.
When a CD is inserted, the CD symbol appears on
the display. As each new track starts to play,
the track number appears 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 on page 239 for more information.
224
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 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.
LOAD: Press this button to load CDs into the CD
player. This CD player holds up to six CDs.