This Transmission Control Unit (ECU) is designed for Eaton Gen 3 automated transmissions, serving as the central electronic component that governs shifting logic, clutch actuation, and system diagnostics. It processes real-time data from sensors to execute smooth gear changes, optimize fuel efficiency, and prevent mechanical stress. The ECU supports advanced functionalities such as fault code retrieval and clearing, enabling technicians to diagnose issues like clutch slippage, sensor failures, or communication errors efficiently. Constructed to meet OEM specifications, it ensures compatibility with heavy-duty commercial vehicles, supporting durability in applications such as long-haul transportation and vocational operations.