OnStar

See also:

Safety Chains
Always attach chains between the vehicle and the trailer. Cross the safety chains under the tongue of the trailer to help prevent the tongue from contacting the road if it becomes separated from ...

Hazard Warning Flashers
(Hazard Warning Flasher): Press and momentarily hold this button located on the instrument panel above the climate control system, to make the front and rear turn signal lamps flash on and off. ...

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 ...