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 an Advisor can run a check., and an Advisor can run a check.

    See also:

    Oil Life Remaining
    If the vehicle has this display, it shows the estimated oil life remaining. If you see 99% Oil Life Remaining on the display, that means that 99% of the current oil life remains. When the o ...

    Driver Information Center (DIC)
    Your vehicle has a Driver Information Center (DIC). The DIC displays information about your vehicle. It also displays warning messages if a system problem is detected. The DIC also allows some feat ...

    Automatic Dimming Mirror
    The vehicle has an automatic dimming mirror. The driver outside mirror automatically adjusts for the glare of headlamps behind you. This feature is controlled by the on and off setting on the insi ...