OnStar is an automotive safety tool in GM-family vehicles that lets people get help quickly and easily during emergencies. The features include automatic crash response, turn-by-turn navigation, roadside assistance, crisis assist, and much more in-vehicle services. For voice communications and data transmissions, it uses 4G LTE cellular technology. OnStar requires a subscription to function. There … Continue reading How to Cancel OnStar Service [Step-by-Step Procedure]