7.3 PCM F-Series Automatic

7.3 PCM F-Series Manual

7.3 PCM Excursion

7.3 PCM E-Series Van

7.3 PCM Testing

 The PCM (Powertrain Control Module) is the main computer that controls the engine, and the transmission if it is an automatic. All in all, they are very well designed and normally last hundreds of thousands of miles. The single biggest killer is people pulling their chips out with the key on, frying the microprocessor, and often the EEPROM and chip.