A Counterpersons Guide To Remanufactured Electronics




General Motors Computer Systems			Electronic Control Module (Exc. surface Mount)
Application: 1980 - 1996 Cars & Trucks Location: Passenger side kick panel or behind glove box. (Imports underneath center of dash). GM uses a Programmable Read Only Memory (PROM) chip that plugs into the ECM. The PROM is programmed for each application. The PROM must be transferred from the old unit to the replacement ECM.			Electronic Control Module (Exc. surface Mount)

Electronic Control Module (Surface Mount)
	Application: 1988 - to Present Cars & Trucks Location: Engine Compartment GM uses a Programmable Read Only Memory (PROM) chip that plugs into the ECM. The PROM is programmed for each application. The PROM must be transferred from the old unit to the replacement ECM.
Powertrain Control Module / Vehicle Control Module (OBDII)
		OBDII Application: 1995 To Present Location: Varies with each model. (underhood or under dash) These units have a flash PROM that must be programmed by vehicle VIN number. The PCMs can be flashed via OE scan tools. These units are repairable under the R&R Program.