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:

    Front Seats
    The front seats have adjustable head restraints in the outboard seating positions. WARNING With head restraints that are not installed and adjusted properly, there is a greater chance that occupants ...

    Power Liftgate
    On vehicles with a power liftgate, the vehicle must be in P (Park) to operate. The taillamps flash and a chime sounds when the power liftgate moves. WARNING You or others could be injured if caught ...

    Easy Exit Driver Seat
    This feature moves the seat rearward allowing the driver more room to exit the vehicle. To activate, turn the ignition off and open the driver door. If the driver door is already open, turning th ...