GMC Sierra 2010 Owner's Manual page 315

Playing a CD (In Either the DVD or
CD Slot)
Insert a CD partway into the slot, label side up.
The player pulls it in and the CD should begin playing
(loading a disc into the system, depending on media
type and format ranges from 5 to 20 seconds for a
CD, and up to 30 seconds for a DVD to begin playing).
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. The
CD is controlled by the buttons on the radio faceplate
or by the RSA unit. See Rear Seat Audio (RSA) on
page 4 143 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 tab 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 3 inch (8 cm) single
CDs with an adapter ring. Full-size CDs and the smaller
CDs are loaded in the same manner.
Z
EJECT or CD (Eject): Press and release to eject
the disc that is currently playing. A CD ejecting from a
radio with CD and DVD, ejects from the bottom slot.
A beep sounds and Ejecting Disc displays. Once the
disc is ejected, Remove Disc displays. The disc can be
removed. If the disc is not removed, after several
seconds, the disc automatically pulls back into
the player.
For the Six-Disc CD player, press and hold for
two seconds to eject all discs.
Z
DVD (Eject): Press and release to eject the disc
that is currently playing in the top slot. A beep sounds
and Ejecting Disc displays.
If loading and reading of a disc cannot be completed,
such as with an unknown format error, etc., and the disc
fails to eject, press and hold for more than five seconds
to force the disc to eject.
(Tune): Turn to select tracks on the CD that is
currently playing.
© ¨
SEEK : Press the left arrow to go to the start
of the current track, if more than ten seconds on the
CD have played. Press the right arrow to go to the
next track.
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