Potential Issues

Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five days, OnStar can contact Roadside Assistance and a locksmith to help gain access to the vehicle.

    See also:

    Overheated Engine Protection Operating Mode
    This operating mode allows the vehicle to be driven to a safe place in an emergency. Should a hot engine condition exist, an overheat protection mode which alternates firing groups of cylind ...

    Power Liftgate Operation
    On vehicles with a power liftgate, the switch is on the overhead console. The vehicle must be in P (Park) to use the power feature. The taillamps will flash and a chime will sound when the power li ...

    Lamp Messages
    AFL (ADAPTIVE FORWARD LIGHTING) LAMPS NEED SERVICE This message displays when the Adaptive Forward Lighting (AFL) system is disabled and needs service. See your dealer. See Adaptive Forwa ...