See also:

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 ...

Rear Window Defogger
The rear window defogger uses a warming grid to remove fog or frost from the rear window. (Rear Defogger): Press to turn the rear window defogger on or off. An indicator light below the button ...

Power Lumbar
Your vehicle has power lumbar on the driver’s and front passenger’s seats. The seatback lumbar support can be adjusted by moving the control located on the outboard side of the seat cushi ...