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 an Advisor can run a check., and an Advisor can run a check.

    See also:

    Traction Control System (TCS)
    The traction control system limits wheel spin. The system turns on automatically every time the vehicle is started. - To turn off traction control, press and release the TCS/StabiliTrak but ...

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

    TPMS Malfunction Light and Message
    The TPMS will not function properly if one or more of the TPMS sensors are missing or inoperable. When the system detects a malfunction, the low tire warning light flashes for about one minut ...