2017-2019 Silverado & Sierra 2500 & 3500 Duramax L5P Valve Bodies

The Allison 1000 is a great transmission, but high mileage or added horsepower can reveal weaknesses in the valve body, leading to lazy shifts, flares, or codes. Tier One's selection of valve bodies for 2011-2016 Silverado and Sierra 2500 and 3500 trucks are designed to sharpen your shifts and increase reliability. Our performance valve bodies feature modified hydraulics to increase line pressure, which provides more clamping force to your clutches. This is essential for any LML Duramax that is tuned or used for heavy towing, ensuring your transmission doesn't slip under load. If your transmission clutches are already burnt out from low pressure or valve body failure, a new valve body won't bring them back, and you may be better suited getting a fresh start with one of our 2011-2016 Duramax LML Complete Transmissions. A high-pressure valve body provides the holding power you need, but you need a converter that can handle that lock-up force, so pair your valve body with one of our 2011-2016 Duramax LML Torque Converters. Electronics hate heat, so protect your new valve body and solenoids by keeping fluid temperatures down with our 2011-2016 Duramax LML Transmission Coolers. When installing a new valve body, it's the perfect time to upgrade your fluid capacity or replace internal filters, so you can find deep pans and other essential components in our 2011-2016 Duramax LML Transmission Parts.