Buick 2009 Enclave Owner's Manual page 233

Problem
No power.
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.
In auxiliary mode, the picture moves
or scrolls.
The remote control does not work.
After stopping the player, I push
Play but sometimes the DVD starts
where I left off and sometimes at the
beginning.
The auxiliary source is running but
there is no picture or sound.
Recommended Action
The ignition might not be turned
ON/RUN or in ACC/ACCESSORY.
Check the display mode settings in
the setup menu by pressing the
display menu button on the remote
control.
Check the auxiliary input
connections at both devices.
Check to make sure there is no
obstruction between the remote
control and the transmitter window.
Check the batteries to make sure
they are not dead or installed
incorrectly.
If the stop button was pressed
one time, the DVD player resumes
playing where the DVD was
stopped. If the stop button was
pressed two times the DVD player
begins to play from the beginning of
the DVD.
Check that the RSE video screen
is in the auxiliary source mode.
Check the auxiliary input
connections at both devices.
Instrument Panel 3-115