GMC Yukon Denali 2005 Manual page 52

After adjustments are made, press the BAND hard key
to go back to the preset station menu. Now that you
have preset the station and the EQ setting, you can
assign the EQ to the preset station. To do this, touch the
desired preset station screen button until you hear a
beep. The EQ setting will now be assigned to that preset
unless you decide to change it.
If you were at the CD screen before setting an EQ and
you press the CD hard key, you will be returned to
the CD screen, and the EQ will be set to that screen
until you change it.
3-6
Digital Signal Processing (DSP)
If your vehicle is equipped with DSP, you have a choice
of four different listening experiences. DSP can be used
while listening to the audio system or the CD player.
You can choose from the following DSP settings:
Normal: Touch this screen button to adjust the audio to
deliver all occupants the best possible sound qualities.
Driver: Touch this screen button to adjust the audio
to deliver the driver's seat occupant the best possible
sound qualities.
Rear: Touch this screen button to adjust the audio to
deliver the rear seat occupants the best possible
sound qualities.
Spacious: Touch this screen button to make the
listening space seem larger.
See "Rear Seat Audio (RSA)", "Theft-Deterrent Feature",
"Audio Steering Wheel Controls", "Radio Reception",
and antenna information in Section 3 of your vehicle's
owner manual for more information.