2007-2013 Chevy & GMC Silverado & Sierra 1500 5.3L Parts & Accessories

Your 2007-2013 Silverado or Sierra 1500 5.3L V8 is a workhorse, but the transmission behind it often struggles to keep up. Whether you have the 4-speed 4L60E (2007-2008) or the 6-speed 6L80E (2009-2013), these units are known for weak torque converters and high operating temperatures. Tier One is your source for bulletproofing your drivetrain. We specialize in high-performance 6L80E built transmissions and offer a complete lineup of parts for both 4-speed and 6-speed trucks, including billet torque converters, thermal bypass valves, and deep transmission pans. Whether you are towing a heavy trailer or building a street truck, Tier One has the parts to keep your Silverado or Sierra shifting firmly. If you don't see what you're looking for, contact Tier One or call 602-399-5484! If your 6-speed transmission has failed or is slipping, reliable replacements are available, so check out our 2007-2013 Silverado & Sierra 1500 5.3L Complete Transmissions. The factory torque converter is the #1 cause of failure in these trucks, so upgrade to a billet unit from our 2007-2013 Silverado & Sierra 1500 5.3L Torque Converters. These transmissions run excessively hot, so extend fluid life with our 2007-2013 Silverado & Sierra 1500 5.3L Transmission Coolers. Erratic shifting and flares can be fixed with our updated 2007-2013 Silverado & Sierra 1500 5.3L Valve Bodies. Finally, whether you need a deep pan for extra capacity or a thermal bypass valve, find it in our section of 2007-2013 Silverado & Sierra 1500 5.3L Transmission Parts.