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:

    If the Off Indicator Is Lit for an Adult-Size Occupant
    If a person of adult size is sitting in the front outboard passenger seat, but the off indicator is lit, it could be because that person is not sitting properly in the seat. Use the following st ...

    Starting the Engine
    Place the transmission in the proper gear. Move your shift lever to PARK (P) or NEUTRAL (N). Your engine will not start in any other position -- this is a safety feature. To restart when you a ...

    Center Console Storage
    If the vehicle has a full floor console it has two storage areas. Lift the left lever located in the front of the armrest lid to access the upper storage tray. Lift the right lever to access the ...