OnStar Services

See also:

Security Light
The security light should come on briefly as the engine is started. If the system is working normally, the indicator light turns off. If it does not come on, have the vehicle serviced by your de ...

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, notify General Motors. Call 1-800-458-8006, or write: Cadillac Customer Assistance Center Cadillac Motor Car Div ...

Curve Tips
Take curves at a reasonable speed. Reduce speed before entering a curve. Maintain a reasonable steady speed through the curve Wait until the vehicle is out of the curve before accelerating ge ...