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 vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push OnStar Additional Information , and an Advisor can run a check.

    See also:

    Traction Control System (TCS)/StabiliTrak® Light
    The Traction Control System (TCS)/ StabiliTrak Light comes on briefly when the engine is started. If the light does not come on, have the vehicle serviced by the dealer. If the system is working n ...

    Fuels in Foreign Countries
    If you plan on driving in another country outside the United States or Canada, the proper fuel might be hard to find. Never use leaded gasoline or any other fuel not recommended in the previous ...

    Power Steering Fluid (2.4L L4 Engine)
    The vehicle has electric power steering and does not use power steering fluid. ...