What is PCM? The Powertrain Control Module (PCM) is an advanced version of the ECU that not only controls the engine but also oversees the transmission, drivetrain, and other related systems. This integrated approach allows for better coordination and overall vehicle performance. When it comes to repairing or replacing your car's control modules, it's essential to choose a reputable supplier like Flagship One, Inc. Their vast selection of quality control modules ensures compatibility and per...