Commander E41 ECM Harness (2017-2023 Duramax L5P)

The GDP Commander E41 ECM Harness is designed to connect to the Duramax L5P ECM in 2017-2023 models and is essential for the successful bench flashing of the ECM with the Commander. This harness eliminates guesswork and unreliable connections, resulting in increased accuracy, efficiency, and peace of mind.