OnStar

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Emissions Inspection and Maintenance Programs
Some state/provincial and local governments have or may begin programs to inspect the emission control equipment on your vehicle. Failure to pass this inspection could prevent you from getting a v ...

Door Locks
To lock or unlock the door, use the Remote Keyless Entry (RKE) transmitter or the key from outside the vehicle, and the door lock knob or switch from inside the vehicle. To unlock or lock the fuel do ...

Reporting Safety Defects toGeneral Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, we certainly hope you will notify us. Please call us at 1-800-521-7300, or write: Buick Customer Assistance Cente ...