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:

    Starting the Vehicle Messages
    JUMP START ACTIVE WAIT TO START This message displays while performing an on-board jump start of the vehicle. See “Jump Starting (On-board with eAssist Only)” for more information. JUM ...

    Available Services included withDirections & Connections® Plan
    • All Safe and Sound Plan Services • Driving Directions - Advisor delivered or OnStar® Turn-by-Turn Navigation (If equipped) • RideAssist • Information and Convenience Services ...

    Tire Chains
    WARNING Do not use tire chains. There is not enough clearance. Tire chains used on a vehicle without the proper amount of clearance can cause damage to the brakes, suspension, or other vehicle par ...