See also:

Customer Assistance Offices
Buick encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail Buick, the letter should be addressed to: United States Buick Customer Assis ...

Auxiliary Devices (Radio with CD and Touchscreen)
For vehicles equipped with the MyLink or IntelliLink infotainment system, see the separate MyLink/IntelliLink Features and Functions Guide for more information. The optional AUX input allows ...

How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free ...