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:

    Turn Signal/Multifunction Lever
    The lever on the left side of the steering column includes the following: : Turn and Lane-Change Signals : Headlamp High/Low-Beam Changer : Windshield Wipers : Windshield Washer Flash-To- ...

    Automatic Door Lock
    The doors are programmed to automatically lock when the shift lever is moved out of P (Park). The automatic door lock feature cannot be disabled. ...

    Traction Control System (TCS) Warning Light
    For vehicles with a Traction Control System (TCS) and StabiliTrak® warning light, this light comes on briefly when the engine is started. If it does not, have the vehicle serviced by you ...