GMC Yukon Denali 2005 Manual page 51

Uplevel Audio Menu
Tone: Touch the plus (+) and minus (–) sign screen
buttons to increase or decrease the Bass, Midrange, or
Treble. You may also adjust the balance by touching
the L screen button for the left side or the R screen
button for the right side of the vehicle, or adjust the
fade by touching the Front screen button or the
Rear screen button.
Speed Compensated Volume (SCV): If your vehicle is
equipped with SCV, the audio system's volume can
adjust automatically depending on the speed at which
your vehicle is traveling. Use the down arrow screen
button to get to the second page of the Audio menu.
Touch the Low, Med, or High screen buttons to
set the desired volume level. You may also touch the
Off screen button to turn this feature off.
Automatic Volume Control (AVC): If your vehicle is
equipped with AVC, the audio system's volume can
adjust automatically to make up for road and wind noise
as you drive. Use the down arrow screen button to
get to the second page of the Audio menu. Touch the
On screen button to turn this feature on. The volume
level should always sound the same to you as you drive.
You may also touch the Off screen button to turn this
feature off.
EQ (Equalizer): While in the base Audio menu, use the
screen buttons labeled EQ1 through EQ5 to choose
preset bass, midrange, and treble equalization settings.
The Custom screen button allows you to choose and
set the equalization levels you desire. Adjust each
setting to the desired level. To set the levels, touch the
Custom screen button until you hear a beep.
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