See also:

Programmable Unlocking Feature
The following is the list of available programming options: Mode 1: Driver’s door unlocks when the transmission is shifted into PARK (P). Mode 2: All doors unlock when the transmission is shi ...

Horn
Press on the steering wheel pad to sound the horn. ...

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, please notify General Motors. Call 1-800-521-7300, or write: Buick Customer Assistance Center P.O. Box 33136 Detroit, M ...