BD Diesel 17-19 Chevrolet/GM Allison Cooler Bypass Delete

Debris in the stock cooler bypass valve can cause it to jam the internal valve, keeping it in recirculation mode. When this happens, the transmission temperature will rise, which can lead to overheating and premature transmission failure. The BD Cooler Bypass Delete keeps the transmission cooler operational all the time and eliminates this failure-prone item.This Part Fits: Year Make Model Submodel 2017-2019 Chevrolet Silverado 2500 HD High Country 2017-2019 Chevrolet Silverado 2500 HD LT 2017-2019 Chevrolet Silverado 2500 HD LTZ 2017-2019 Chevrolet Silverado 2500 HD WT 2017-2019 Chevrolet Silverado 3500 HD High Country 2017-2019 Chevrolet Silverado 3500 HD LT 2017-2019 Chevrolet Silverado 3500 HD LTZ 2017-2019 Chevrolet Silverado 3500 HD WT 2017-2019 GMC Sierra 2500 HD Base 2017-2019 GMC Sierra 2500 HD Denali 2017-2019 GMC Sierra 2500 HD SLE 2017-2019 GMC Sierra 2500 HD SLT 2017-2019 GMC Sierra 3500 HD Base 2017-2019 GMC Sierra 3500 HD Denali 2017-2019 G