GMC Acadia 15919282 Owner's Manual page 492

Setting the Tone
TREBLE: Select and hold the plus (+) or minus (−) sign
to increase or decrease the treble. If a station is weak or
noisy, decrease the treble.
MID (Midrange): Select and hold the plus (+) or
minus (−) sign to increase or decrease the midrange.
BASS: Select and hold the plus (+) or minus (−) sign to
increase or decrease the bass.
Adjusting the Speakers
L/R (Left/Right) (Balance): To adjust the balance
between the left and the right speakers, select and hold
the L or R screen buttons.
Front/Rear (Fade): To adjust the fade between the
front and the rear speakers, select and hold the Front or
Rear screen buttons.
3-6
Automatic Equalization
With automatic equalization customized equalization
settings designed for Rock, Pop, Country, Classical, and
Talk can be selected. Select one of the equalization
screen buttons to hear the change in sound.
Custom: Select this screen button to adjust the bass,
treble, and midrange settings as desired.
The system saves separate settings for each source.
Talk: The Acadia and Enclave has only an equalization
setting for Talk.
Select Talk to adjust the tone settings to an automatic
preset for talk radio.
Rear Seat Audio (RSA)
With this feature, if the Rear Seat Audio (RSA) system
has been turned on, it can be turned off by selecting the
Rear Seat Audio Off screen button. See "Rear Seat
Audio (RSA)" in the Index of your vehicles owner manual.