1999-2013 Chevy & GMC 1500 4L60E Transmissions & Transmission Parts

The 1999-2013 Silverado and Sierra 1500s can make some good power with the right performance mods, but their stock transmissions can start to struggle with only mild increases in horsepower and torque. Tier One's built 4L60E transmissions will let you stack some serious power onto your Silverado or Sierra 1500 build without your transmission letting you down. Each Tier One 4L60E transmission can handle huge levels of horsepower and torque in aggressive applications so that you can push your Silverado or Sierra 1500 build to the limit both on and off the road. Our built GM 1500 transmissions are perfect for the street, trail, sled pull, or drag strip. Whatever your build, Tier One's 4L60E transmissions are ready to handle it. Also check out our GM transmission rebuild kits or our GM truck performance parts and accessories! Contact Tier One with questions or for custom builds!