GMC 2003 Sierra 1500 Pickup Owner's Manual page 273

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Problem
No power.
Disc will not play.
~ ~~ ~
The picture does not fill
the screen. There are
black borders on the top
and bottom or on both
sides or it looks
stretched out.
Recommended Action
The ignition might not be
in on
or
accessory.
The parental control
button might have been
pressed. (The power
indicator light will flash.)
The system might be off.
The parental control
button might have been
pressed. (The power
indicator light will flash.)
The system might be in
auxiliary source mode.
Press the SRCE button
to toggle between the
DVD player and the
auxiliary source.
The disc is upside down
or is not compatible.
Press the Display button
on the DVD player or on
the remote control.
Change the display mode.
Problem
-~
~
~
The disc was ejected, but
it was pulled back into the
DVD player.
In auxiliary mode, the
picture moves or scrolls.
The language in the
audio or on the screen is
wrong.
Recommended Action
The disc is being stored in
the DVD player. Press the
eject button again to eject
the disc.
Check the signal coming
from the auxiliary device
and make sure that the
connection and the signal
is good.
Change the Video
Format to PAL or NTSC.
See "Stereo RCA Jacks"
previously for how to
change the video format.
Press the Menu button
on the DVD player or on
the remote control and
change the audio or
language selection on the
DVD menu.
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