2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Chips, Modules & Tuners

Unlock your 6.6L Duramax's full power by installing any of our featured Diesel tuners designed specifically for your truck. Gain additional horsepower, torque and throttle by upgrading your stock PCM to a performance-oriented tuner! Designed to overhaul your truck's shifting for an enhanced gear-holding and optimized shift pressures, GM 2500HD/3500HD owners can expect an excellent increase in overall performance. Achieve improved injection timing/pulse and fuel rail pressure with a new aftermarket PCM Tuner from Alligator Performance. For even greater added power, check out our selection of Turbo Upgrades. GM Duramax Fitments: 2011, 2012, 2013, 2014, 2015, 2016 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.