Discover the key to unlocking your 2017-2019 L5P or LM2 Duramax's true potential with the Fish Tuning FTL5PCAN17-19 Can Bus Harness. This essential component is engineered to seamlessly integrate with your vehicle's sophisticated electronics, providing a direct and reliable communication pathway for optimal tuning and performance modifications. Without a properly functioning CAN Bus harness, advanced tuning capabilities are severely limited, preventing your Duramax from achieving its peak power, efficiency, and responsiveness. Invest in the FTL5PCAN17-19 and experience the difference a robust and dedicated connection makes in harnessing the full power of your Duramax.