ProTech Auto Systems is your trustworthy supplier of all ECM, PCM, and ECU 04896792AA, 04896792AB, 04896792AC, 04896792AD, 04896792AE, 04896794AA, 04896794AB, 04896794AC, 04896794AD, R4896792AE, R4896794AD, RL896792AE & RL896794AD Auto Computers. These devices monitor the fuel, air, and electrical aspects of a 04896792AA, 04896792AB, 04896792AC, 04896792AD, 04896792AE, 04896794AA, 04896794AB, 04896794AC, 04896794AD, R4896792AE, R4896794AD, RL896792AE & RL896794AD engine to ensure optimal engine performance. When an auto computer becomes impaired, that is where ProTech Auto Systems steps in.