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:

    If the Off Indicator is Lit for an Adult-Size Occupant
    If a person of adult-size is sitting in the right front passenger seat, but the off indicator is lit, it could be because that person is not sitting properly in the seat. If this happens, use the ...

    Connecting a USB Storage Device or iPod®
    The USB port can be used to control an iPod or a USB storage device. To connect a USB storage device, connect the device to the USB port located in the center console or on the instrument panel. To ...

    Securing Child Restraints (Front Passenger Seat)
    This vehicle has airbags. A rear seat is a safer place to secure a forward-facing child restraint. See Where to Put the Restraint on page 3‑41. In addition, the vehicle has a passenger sensin ...