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:

    Capacities and Specifications
    The following approximate capacities are given in metric and English conversions. See Recommended Fluids and Lubricants on page 11‑12 for more information. If the vehicle has a diesel engine, ...

    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 deale ...

    Where to Put the Restraint
    According to accident statistics, children and infants are safer when properly restrained in a child restraint system or infant restraint system secured in a rear seating position. We recommend t ...