Adjusting the Treble, Midrange, and Bass
1. Press the TONE button.
2. Select Treble, Midrange, or Bass.
3. Select the value.
Press the 
BACK button to go
back to the Tone Settings menu.
See also:
Cruising, Turning & Stopping
Ride comfort is still king at Buick, and it's a formula GM shouldn't change.
The LaCrosse leaves manhole covers and steel plates behind with the sort of
measured wump that you'll notice but won't ...
Using Voice Recognition
For vehicles equipped with the MyLink or IntelliLink infotainment system, see
the separate MyLink/ IntelliLink Features and Functions Guide for more information.
To use voice recognition, press the ...
Power Reclining Seatbacks
To raise or recline the seatback, tilt the top of the
control forward or rearward.
See Reclining Seatbacks. ...