Looking to get the most out of your LML Duramax? Then you need the ATS 6019244308 Co-Pilot Transmission Controller. This easy-to-use, in-cab controller increases clutch pack apply pressure relative to boost, throttle position, and vehicle speed sensor, resulting in more effective shifting than any shift kit on the market. Plus, the Co-Pilot Transmission Controller helps create a more efficient power transfer by controlling torque converter lockup, which can lead to cooler transmission running temperatures. And for those who like to push their truck to the limit, the Co-Pilot Transmission Controller features a user selectable "Race Mode" which forces lockup after the 1-2 shift while maintaining full line pressure. The ATS 6019244308 Co-Pilot Transmission Controller is the perfect way to get the most out of your LML Duramax.