07/16/2026
The weak link in many 2020+ GM Allison 10L1000 transmissions has always been the factory cast valve body. Bore wear, pressure loss, harsh shifts, limp mode, and even P0747 can all stem from valve body wear over time.
The NEW DNJ Billet 10L1000 Valve Body Upgrade is engineered to eliminate those common failure points with a precision-machined 6061 billet aluminum design that offers improved durability, tighter tolerances, and a permanent solution to advanced valve body wear. It’s designed to address feed limit, pressure regulation, TCC, and other hydraulic issues that commonly affect the 10L1000 platform.
At Gearheads Transmission, we’re always looking for the best upgrades to keep your truck reliable—whether you’re towing heavy, working every day, or building for performance.
📞 Call or message us today to learn if the DNJ Billet 10L1000 Valve Body Upgrade is right for your truck.
😈Built for the Road Ahead😈