See also:

Customer Assistance for Text Telephone (TTY) Users
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 can co ...

Windows
Press the switch to lower the window. Pull the switch up to raise it. For more information, see Power Windows. ...

End a Call
Push . System responds: “Call ended.” ...