GMC 2012 Sierra Denali Owner's Manual page 212

7-30 Infotainment System
The DVD player is only compatible
with DVDs of the appropriate region
code printed on the jacket of
most DVDs.
The DVD slot of the radio is
compatible with most audio CDs
and CD-R/RW, DVD-Video,
DVD-Audio, DVD-R/RW, and DVD
+R/RW media, along with MP3 and
WMA formats.
If an error message displays on the
video screen or the radio, see DVD
Display Error Messages under
Rear Seat Entertainment (RSE)
System on page 7 39, and CD/DVD
Player Messages later in this
section for more information.
Inserting a Disc
Insert a disc partway into the top
slot, label side up. The player pulls
it in and the disc should begin
playing. Loading Disc shows on
the radio display. At the same time,
the radio displays a softkey menu of
option(s). Some discs automatically
play the movie while others default
to the softkey menu display,
which requires the Play, Enter,
or Navigation softkeys to be
pressed, either by softkey or by the
rear seat passenger using the
remote control.
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.
Ejecting a Disc
Z
DVD (Eject): Press and
release to eject the disc currently
playing in the top slot. A beep
sounds and Ejecting Disc displays.
If loading and reading of a disc
cannot be completed, due to
unknown format, etc., and the disc
fails to eject, press and hold for
more than five seconds to force the
disc to eject.
Playing a DVD
DVD/CD AUX (Auxiliary): Press to
cycle through DVD, CD, or Auxiliary
when listening to the radio. The
DVD/CD text tab and a message
showing the track or chapter
number will display when a disc is in
either slot. Press the DVD/CD AUX
button again and the system
automatically searches for an
auxiliary input device; see Auxiliary
Devices on page 7 34 for more
information. If a portable audio
player is not connected, No Aux
Input Device displays. If a disc is in
both the DVD slot and the CD slot,
the DVD/CD AUX button cycles
between the two sources and does
not indicate No Aux Input Device.
If a front auxiliary device is
connected, the DVD/CD AUX button
cycles through all available options,
such as: DVD slot, CD slot, front
auxiliary, and rear auxiliary (if
available). See Using the Auxiliary