2007-2013 Silverado & GMC 1500 5.3L Complete Transmissions

The stock 6L80E or 4L60E transmission helping to power your 2007-2013 Silverado or Sierra 1500 5.3L build aren't known for being the most reliable transmissions in the world, and whether your stock transmission has seen better days after a lot of years on the road, you're adding power to your 1500 build, or if you're towing heavy, a built transmission for your 5.3L Silverado or Sierra may be in order. We here at Tier One have a lineup of high-quality built 6L80 transmissions and built 4L60E transmissions that can handle any application you have in mind and replace your aging stock transmission with something more reliable. All of our Silverado & Sierra 1500 5.3L built transmissions feature a ton of reliability improvements, as well as power-holding upgrades that let you take your 2007-2013 Silverado or Sierra build to the next level. Make sure you also check out our 2007-2013 Silverado & Sierra 1500 5.3L Transmission Rebuild Kits or 2007-2013 Silverado & Sierra 1500 5.3L Transmission Coolers!