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:

    Care of the CD/DVD Player
    Do not add a label to a disc; it could get caught in the CD/DVD player. If a label is needed, label the top of the recorded disc with a marking pen. The use of disc lens cleaners for discs i ...

    Trip Odometer
    The trip odometer can show how far the vehicle has been driven since the trip odometer was last set to zero. For more information see “Trip Odometer” under Driver Information Center (DIC)  . ...

    Transferring Service
    Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has ch ...