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:

    Lap Belt
    This part is only for the lap belt. To learn how to wear a lap-shoulder belt, see Lap-Shoulder Belt. You vehicle may have a center seating position. When you sit in the center front seating positi ...

    Remote Vehicle Start
    With this feature the engine can be started from outside of the vehicle. ...

    How to Reset the Engine Oil Life System
    Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. To reset the system: 1. Turn the ignition to ON/RUN with the engine off. 2. Press t ...