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:

    Exterior Lighting
    The exterior lamp control is located on the turn signal/lane change lever. : Turn to operate the exterior lamps. : Turns the exterior lamps off. AUTO: Turns the exterior lamps on and off automat ...

    Hazard Warning Flashers
    (Hazard Warning Flashers): Press this button located on top of the steering column, to make the front and rear turn signal lamps flash on and off. This warns others that you are having trouble. Pr ...

    Receiving a Call
    When an incoming call is received, the audio system mutes and a ring tone is heard in the vehicle. • Press to answer the call. • Press to ignore a call. ...