GMC 2010 Sierra 1500 Crew Cab Owner's Manual page 331

Press the button on the radio to eject the disc. If a
disc is ejected from the radio, but not removed, the
radio reloads the disc after a short period of time. The
disc is stored in the radio. The radio does not resume
play of the disc automatically. If the RSA system is
sourced to the DVD, the movie when reloaded into the
DVD player begins to play again. In case loading and
reading of a DVD or CD cannot be completed (unknown
format, etc.), and the disc fails to eject, press and hold
the DVD button more than five seconds to force the
disc to eject.
This message displays when there are
disc load or eject problems.
This message displays, if the disc
is inserted with the disc label wrong side up, or if the
disc is damaged.
This message displays, if the disc
is not from a correct region.
This message displays, if no disc is
present when the or DVD/CD AUX button is
pressed on the radio.
The radio system has an auxiliary input jack located on
the lower right side of the faceplate. This is not an audio
output; do not plug the headphone set into the front
auxiliary input jack. An external audio device such as an
iPod, laptop computer, MP3 player, CD player, etc. can
be connected to the auxiliary input jack for use as
another source for audio listening.
Drivers are encouraged to set up any auxiliary device
while the vehicle is in P (Park). See
for more information on driver distraction.
To use a portable audio player, connect a 3.5 mm
(1/8 in) cable to the radio's front auxiliary input jack.
When a device is connected, press the radio CD/AUX
button to begin playing audio from the device over the
vehicle speakers.
For optimal sound quality, increase the portable audio
device's volume to the loudest level.
It is always best to power the portable audio device
through its own battery while playing.
Turn clockwise or
counterclockwise to increase or decrease the
volume of the portable player. Additional volume
adjustments might have to be made from the portable
device if the volume is not loud or soft enough.
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