GMC 2010 Yukon/Yukon XL Owner's Manual page 311

If playing a CD-R, the sound quality can be reduced
due to CD-R or CD-RW quality, the method of
recording, the quality of the music that has been
recorded, and the way the CD-R or CD-RW has been
handled. Handle them carefully. Store CD-R(s) or
CD-RW(s) in their original cases or other protective
cases and away from direct sunlight and dust. The CD
or DVD player scans the bottom surface of the disc.
If the surface of a CD or DVD is damaged, such as
cracked, broken, or scratched, the CD or DVD does
not play properly or not at all. Do not touch the bottom
side of a CD or DVD while handling it; this could
damage the surface. Pick up CDs by grasping the outer
edges or the edge of the hole and the outer edge.
If the surface of a CD or DVD is soiled, clean it with
a soft, lint free cloth or dampen a clean, soft cloth in
a mild, neutral detergent solution mixed with water.
Make sure the wiping process starts from the center
to the edge.
Insert a CD partway into the slot, label side up.
The player pulls it in and the CD should begin playing.
Insert a CD partway into the slot, label side up.
The player pulls it in and the CD should begin playing in
5 to 20 seconds for a CD, and in 30 seconds for a DVD,
depending on media type and format ranges.
If the ignition or radio is turned off, while a CD is 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. The CD is
controlled by the buttons on the radio faceplate or
by the RSA unit. See Rear Seat Audio (RSA) on
page 4 134 for more information. The DVD/CD decks,
(upper slot is the DVD deck and the lower slot is the CD
deck) of the radio are compatible with most audio CDs,
CD-R, CD-RW, and MP3s.
When a CD is inserted, the text label DVD or CD
symbol displays on the left side of the radio display.
As each new track starts to play, the track number
displays.
The CD player can play the smaller 8 cm (3 in) single
CDs with an adapter ring. Full-size CDs and the smaller
CDs are loaded in the same manner.
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