See also:

Seat Cushion Tilt Feature
If available, move the lever up or down to raise or lower the front of the seat cushion. ...

Ending a Call
Turn the Menu knob to select Hang Up, then press SELECT. ...

Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
To assist customers who are deaf, hard of hearing, or speech-impaired and who use Text Telephones (TTYs), Buick has TTY equipment available at its Customer Assistance Center. Any TTY user ca ...