2007.5-2010 Silverado & Sierra 2500 & 3500 Duramax LMM Transmission Coolers

It's not hard to get the transmission on your Duramax LMM-powered Sierra or Silverado running hot, especially when you're towing heavy or running a bunch of extra horsepower. Going into limp mode or hurting your transmission is a real possibility if you don't manage those temps. Tier One's selection of transmission coolers for 2007.5-2010 Silverado & Sierra 2500 & 3500 Duramax LMM trucks help keep your transmission temperatures under control, even during extreme applications. Each of these transmission coolers features more surface area and more efficient designs than stock to improve heat dissipation. We carry both Duramax LMM drop-in transmission coolers and universal auxiliary coolers to really take your cooling to the next level. 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 2007.5-2010 Duramax LMM 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 2007.5-2010 Duramax LMM 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 2007.5-2010 Duramax LMM 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 2007.5-2010 Duramax LMM Transmission Parts.