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:

    Eight Way Power Seats
    To adjust a power seat, if equipped: ○ Move the seat forward or rearward by sliding the control forward or rearward. ○ Raise or lower the front or rear part of the seat cushion by movi ...

    Reducing Speed While Using Cruise Control
    If the cruise control system is already activated, . Press and hold the SET– button on the steering wheel until the desired lower speed is reached, then release it. • To slow down in small amount ...

    Folding Mirrors
    Vehicles with outside power foldaway mirrors have controls on the driver door. ...