2022-2024 Chevy & GMC Silverado & Sierra 1500 5.3L Parts & Accessories

Your 2022-2024 Silverado or Sierra 1500 rocking the 5.3L V8 is a capable truck, but the factory 10L80 transmission often holds it back from true greatness. Tier One carries the essential drivetrain upgrades you need to fix common transmission issues and improve towing reliability. We have everything from high-performance valve bodies and billet torque converters to deep transmission pans and thermal bypass valves. Whether you are towing a travel trailer or hitting the trails, Tier One has the parts to keep your 10L80 shifting firmly and running cool. We are your one-stop-shop for Silverado & Sierra transmission performance. If you don't see something you're looking for, contact Tier One or call 602-399-5484! If your stock transmission has failed or is slipping, reliable replacements are available, so check out our 2022-2024 Chevy & GMC 1500 5.3L Complete Transmissions. The factory torque converter is prone to flexing under load, so get better power transfer and reliability with one of our billet 2022-2024 Chevy & GMC 1500 5.3L Torque Converters. The 10L80 runs hot by design, which kills fluid life, so keep your temps in check with our 2022-2024 Chevy & GMC 1500 5.3L Transmission Coolers. Low lubrication pressure causes premature failure in these units, but you can fix it permanently with our 2022-2024 Chevy & GMC 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 2022-2024 Chevy & GMC 1500 5.3L Transmission Parts.