Original Equipment OEM Factory PCM ECU for a 1994 Jeep Grand Cherokee 5.2L V8 Engine. Part Number 56028113.  Used ECU came out of a 94 ZJ, VIN: 1J4GZ78Y9RC186571.  This part number, 56028113, MUST MATCH the PCM on your Jeep ZJ or it will not work in your vehicle.  This year of Jeep Grand Cherokee does not require VIN matching, but the 56028113 number MUST match your PCM.  If you're not sure of your original PCM part #, then please consult a dealer or qualified mechanic before ordering.  Not responsible if you order the wrong part.