GMC 2005 Sierra Denali Owner's Manual page 197

Battery Replacement
To change the batteries, do the following:
1. Remove the battery compartment door located on
the bottom of the remote control.
2. Replace the two AA batteries in the compartment.
Make sure that they are installed correctly, using
the diagram on the inside of the battery
compartment.
3. Close the battery door securely.
If the remote control is to be stored for a long period of
time, remove the batteries and keep them in a cool,
dry place.
Problem
No power.
Disc will not play.
Recommended Action
The ignition might not be
in on or accessory.
The parental control
button might have been
turned on. The power
indicator light will flash.
The system might be off.
The parental control
button might have been
turned on. The power
indicator light will flash.
The system might be in
auxiliary mode.
The disc is upside down
or is not compatible.
Problem
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.
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
Check the display mode
settings in the
display menu.
The disc is being stored in
the DVD player. Press the
eject button again to eject
the disc.
Check the auxiliary input
connections at both
devices.
Change the Video Format
to PAL or NTSC. See
"Stereo RCA Jacks"
previously for how to
change the video format.
Check the audio or
language selection in the
main DVD menu.
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