OnStar Services

See also:

What to Use
To determine what kind of fluid to use, see Recommended Fluids and Lubricants. Always use the proper fluid. Notice: Use of the incorrect fluid may damage the vehicle and the damages may not be c ...

Engine Oil Pressure Light
WARNING Do not keep driving if the oil pressure is low. The engine can become so hot that it catches fire. Someone could be burned. Check the oil as soon as possible and have the vehicle serviced ...

Buying New Tires
GM has developed and matched specific tires for your vehicle. The original equipment tires installed on your vehicle, when it was new, were designed to meet General Motors Tire Performance Cri ...