PCM Helper is a software tool designed to assist automotive professionals in identifying and managing ECUs (Engine Control Units) and TCUs (Transmission Control Units). It provides detailed information about supported modules from brands like Bosch, Delphi, Siemens/Continental, and others. The software helps users find compatible communication protocols, MCUs (Microcontroller Units), and reading/writing methods (OBD, Bench, Boot) for various vehicle brands. It is mainly used alongside tools like PCMflash for ECU tuning, remapping, and diagnostics