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. 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 effectively. 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. If your truck has already suffered from heat damage and is slipping in gear, a cooler alone won't fix the internal clutches, so you may need to look at replacing the unit with one of our 2011-2016 Duramax LML Complete Transmissions. An unlocking torque converter creates significant friction and heat, so to reduce heat generation at the source while improving towing performance, consider upgrading to one of our 2011-2016 Duramax LML Torque Converters. Sometimes overheating is caused by the factory thermal bypass valve restricting flow, but you can fix this restriction by installing a new bypass valve from our section of 2011-2016 Duramax LML Transmission Parts. Another great way to help manage heat is by increasing your overall fluid volume, so add several quarts of extra capacity and help dissipate heat by adding a deep pan from our section of 2011-2016 Duramax LML Transmission Parts.