See also:

Courtesy Transportation Program (U.S. and Canada)
To enhance your ownership experience, we and our participating dealers are proud to offer Courtesy Transportation, a customer support program for vehicles with the Bumper-to-Bumper (Base War ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...

Fuses and Circuit Breakers
If the vehicle is a hybrid, see the hybrid supplement for more information. The wiring circuits in the vehicle are protected from short circuits by a combination of fuses, circuit breakers and fusi ...