2001-2004 Silverado & Sierra 2500 & 3500 Duramax LB7 Transmission Coolers

It's not exactly hard to get your Duramax LB7 to generate a bunch of heat, especially if you've added performance upgrades or tow heavy loads. Tier One's selection of transmission coolers for 2001-2004 Silverado or Sierra 2500 or 3500 Duramax LB7 trucks helps lower your transmission temperatures and keep you out of limp mode. Each of these Duramax LB7 transmission coolers features larger surface areas and much more efficient designs than stock, allowing them to dissipate heat effectively. We carry both drop-in replacement coolers and universal auxiliary units to give your truck the cooling it needs to survive. 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 2001-2004 Duramax LB7 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 2001-2004 Duramax LB7 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 2001-2004 Duramax LB7 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 2001-2004 Duramax LB7 Transmission Parts.