2011-2016 Silverado & Sierra 2500 & 3500 Duramax LML Transmission Coolers

It's not hard to get the Duramax LML Silverado & Sierras running hot, especially when towing or running around at higher power levels, but the stock transmission cooling system can easily get overwhelmed and potentially put you in limp mode or damage your transmission. Tier One's selection of performance transmission coolers for 2011-2016 Silverado & Sierra 2500 & 3500 Duramax LML trucks help keep your truck's transmission temperatures under control even in heavy towing and extreme power applications. These transmission coolers feature larger surface areas and more efficient designs than stock that allow them to dissipate more heat more effectively, even when your Duramax's transmission is put under extreme levels of load. We carry both drop-in replacement Duramax LML transmission coolers as well as universal auxiliary transmission coolers that give your truck even more cooling capability. Make sure to check out our 2011-2016 Duramax LML Transmission Pans or our 2011-216 Duramax LML Transmission Electronics!