listed below are GM factory surplus, OEM parts - new, never used or remanufactured. We carry ECU/ECM/PCM and TCM modules that fit a variety of GM made vehicles, such as the Chevrolet Silverado, GMC Sierra, Pontiac GTO, Cadillac CTS, and many more. Any EMC may work for a number of vehicles that match certain specifications, such as engine size and fuel type.
Engine Control Module (ECM) is an integral part of the electrical system in most modern vehicles. The ECM, also known as the Powertrain Control Module (PCM), utilizes a network of sensors throughout the vehicle to properly regulate the combination of fuel, air, and spark. That's putting it simply, of course. In the event that something does go wrong, the ECM will log a code associated with the problem that can be read with a specialized scanner. The ECM is also typically involved in regulating features such as cruise control, theft protection, and anti-skid brakes.
While it is sometimes possible to repair a faulty ECM with the proper skills and tools, an ECM can be damaged beyond repair. All of the ECM/PCM/ECU computers available on our website are new OEM GM factory surplus, and not remanufactured (repaired). There is no core charge when you purchase an EMC from SMC Performance and Auto Parts.
Please verify correct module fitment with your GM dealer using your vehicle identification number (VIN).