See also:

Horn
Press near the horn symbols or press on the steering wheel pad to sound the horn. ...

Portable Audio Devices
This vehicle may have an auxiliary input, located on the audio faceplate. External devices such as iPod®, laptop computers, MP3 players, CD changers, etc. can be connected to the auxiliary port ...

Customer Assistance for TextTelephone (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 comm ...