See also:

Manual Mirrors
Vehicles with outside manual mirrors can be adjusted by moving the mirror up and down or left to right to see a little of the side of the vehicle, and have a clear view behind the vehicle. Using hood ...

Airbag System Messages
SERVICE AIRBAG This message displays if there is a problem with the airbag system. Take the vehicle to your dealer for service. ...

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-GMC-8782 (1-800-462-8782), or write: GMC Customer Assistance Center P.O. Box ...