GMC 2011 Sierra Denali Owner's Manual page 220

7-32 Infotainment System
Stopping and Resuming
Playback
To stop playing a DVD without
turning off the system, press the
c
button on the remote control,
or press the softkey located under
c j
the or the / tabs displayed
on the radio. If the radio is sourced
to something other than DVD-V,
press the DVD/CD AUX button to
make DVD-V the active source.
To resume DVD playback, press
j
the / button on the remote
control, or press the softkey located
j
under the / tab on the radio.
The DVD should resume play from
where it last stopped if the disc has
not been ejected and the stop
button has not been pressed twice
on the remote control. If the disc
has been ejected or the stop button
has been pressed twice on the
remote control, the disc resumes
playing at the beginning of the disc.
CD/DVD Player Messages
Disc Format Error: This message
displays if the disc is inserted with
the disc label wrong side up, or if
the disc is damaged.
Disc Region Error: This message
displays if the disc is not from a
correct region.
No Disc Inserted: This message
displays if no disc is present when
Z
the or DVD/CD AUX button is
pressed on the radio.
Optical Error: This message
displays if the disc was inserted
upside down.
Disk Read Error: This message
displays if a disc was inserted with
an invalid or unknown format.
Player Error: This message
displays if there are disc load or
disc eject problems.
It is very hot. When the
temperature returns to normal,
the disc should play.
The road is very rough.
When the road becomes
smoother, the disc should play.
The disc is dirty, scratched, wet,
or upside down.
The air is very humid. If so, wait
about an hour and try again.
There was a problem while
burning the disc.
The label is caught in the
CD/DVD player.
If the disc is not playing correctly,
for any other reason, try a known
good disc.