2006-2007 Silverado & Sierra 2500 & 3500 Duramax LBZ Transmission Coolers

It's not hard to get the Duramax LBZ extremely hot, especially if you're towing heavy or have a bunch of power modifications stacked on. Excess heat is the fastest way to damage your transmission or force your truck into limp mode. Tier One's performance transmission coolers for 2006-2007 Silverado & Sierra 2500 & 3500 Duramax LBZ trucks help reduce your truck's transmission temperatures, even if you are pushing it to the limit. Each of these coolers features more surface area and more efficient designs than stock to greatly improve heat dissipation. We carry both drop-in replacement coolers and auxiliary units to give your truck the cooling capacity it needs. 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 2006-2007 Duramax LBZ 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 2006-2007 Duramax LBZ 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 2006-2007 Duramax LBZ 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 2006-2007 Duramax LBZ Transmission Parts.