2020-2022 GM Duramax 6.6L L5P Tuners & Monitors

The factory PCM programming for your 2020-2022 GM 2500/3500 does it's job for stock equipped trucks; however, there's tons of more power and performance hiding under the hood of your 6.6L Duramax L5P, especially after modifying your truck. These premium performance tuners help unlock more horsepower, torque, and throttle response by making adjustments within your truck's ECM. Additionally, these tuners can make your GM Sierra/Silverado feel like a whole new rig by correcting your truck for an increase in tire size, change in gear ratio, or a new exhaust system that requires tuning. Many of these devices even work overtime as effective vehicle monitors so you can better keep tabs on your truck's critical running information to spot problems before they become disasters. Keep tabs on your engine parameters and experience a more powerful ride with any of the high-quality tuners we offer for the 2020-2022 GM 6.6L Duramax L5P equipped trucks, right here at Alligator Performance! GM Duramax Fitments: 2020, 2021, 2022 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.