GMC Yukon Denalid Owner's Manual page 326

The RSE system will always transmit the audio
signal to the wireless headphones, if there is audio
available. See "Headphones" earlier in this
section for more information.
The DVD player is capable of outputting audio to
the wired headphone jacks on the RSA system,
if your vehicle has this feature. The DVD
player may be selected as an audio source on the
RSA system. See Rear Seat Audio (RSA) on
page 333 for more information.
When a device is connected to the radio's auxiliary
input jack, if your vehicle has this feature, or A/V
jacks, the rear seat passengers will be able to hear
audio from the auxiliary device through the wireless
or wired headphones. The front seat passengers
will be able to listen to playback from this device
through the vehicle speakers by selecting AUX as
the source on the radio.
326
Video Screen
The video screen is located in the RSE overhead
console.
To use the video screen, do the following:
1. Push the release button located on the RSE
overhead console.
2. Rotate the screen to the desired position.
When the video screen is not in use, push it up
into its locked position.
If a DVD is playing and the screen is raised to its
locked position, the screen will remain on, this
is normal, and the DVD will continue to play
through the previous audio source. Use the remote
control power button or eject the disc to turn off
the screen.
The RSE overhead console contains the infrared
receivers for the wireless headphones and the
infrared receivers for the remote control. They are
located at the rear of the console.
Notice: Avoid directly touching the video
screen, as damage may occur. See "Cleaning
the Video Screen" later in this section for
more information.