PCM (Powertrain Control Module) The PCM, or Powertrain Control Module, is an integrated control unit that oversees the engine, transmission, and other components of the powertrain system. It plays a vital role in coordinating the operation of various systems to maximize performance and efficiency. When it comes to resolving ECU, PCM, or ECM issues in your vehicle, Flagship One, Inc. is a trusted provider of reliable solutions. Specializing in remanufactured and refurbished auto computer mod...