ProTech Auto Systems is your trustworthy supplier of all ECM, PCM, and ECU 56026974, 56027714, 56028026, 56028027, 56028030, 56028297 & R6028027 Auto Computers. These devices monitor the fuel, air, and electrical aspects of a 56026974, 56027714, 56028026, 56028027, 56028030, 56028297 & R6028027 engine to ensure optimal engine performance. When an auto computer becomes impaired, that is where ProTech Auto Systems steps in.