GMC Sierra Denali 2006, Owner'S Manual, Page: 205 / 438

DVD Distortion
There may be an experience with audio distortion in the
wireless headphones when operating cellular phones,
scanners, CB radios, Global Positioning Systems
(GPS)*, two-way radios, mobile fax, or walkie talkies.
It may be necessary to turn off the DVD player
when operating one of these devices in or near the
vehicle.
* Excludes the OnStar
®
System.
Cleaning the Video Screen
Pour some isopropyl or rubbing alcohol on a clean cloth
and gently wipe the video screen. Do not spray
directly onto the screen and do not press too hard or
too long on the video screen.
Rear Seat Audio (RSA)
This feature allows rear seat passengers to listen to any
of the sources: radio, cassette tapes, CDs, or DVDs.
However, the rear seat passengers can only control the
sources that the front seat passengers are not
listening to. For example, rear seat passengers may
listen to and control cassette tapes, CDs, or DVDs
through the headphones while the driver listens to the
radio through the front speakers. The rear seat
passengers have control of the volume for each set of
headphones.
The front seat audio controls always have priority
over the RSA controls. If the front seat passengers
switch the source for the main radio to a remote source,
the RSA will not be able to control the source. You
can operate the rear seat audio when the main radio
is off.
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