Fault diagnosis, fault symptoms
📄 OnStar control button unit, one or more buttons are not functioning
📄 It is not possible to contact the OnStar Call Center (OCC)
📄 The microphone is out of function
📄 Voice recognition, poor function
📄 The LED on the control button unit, malfunction
📄 No (or disturbed) OnStar sound
📄 The OnStar system cannot control the horn and hazard warning lights
📄 The OnStar system does not start or there is no diagnostic communication with the system