Transmission Services
Is Your Allison Transmission Acting Up?
Expert Diagnostics and Maximum Strength Rebuilds
Whether you are stuck in Limp Mode, feeling harsh shifts, or slipping under a heavy load, you do not need a new truck. You need a specialist. We have spent over 20 years building and supporting the Allison 1000 and 10L1000 platforms to solve these issues.
Limp Mode and Codes
If your truck will not shift past 3rd gear or threw a P0700 code, our diagnostic equipment identifies the exact sensor or internal failure immediately.
Slipping and Burnt Fluid
Adding power to a Duramax often exceeds the factory clutch capacity. We offer upgraded builds that handle the torque your engine is actually making.
Cooling and Contamination
Debris from a failure can kill a new transmission. We use Hot Flush technology to ensure your system is 100% clean before a new unit is installed.
The Merchant Maximum Solution
Work Series
Daily Driving and Towing Upgrade
Designed for stock trucks and those with up to 150HP over stock. Maintains factory shift feel while adding the durability needed for heavy hauling.
View Work Series UnitsPro Series
Maximum Performance and Strength
Engineered for trucks with 150HP to 1000HP plus over stock. Features billet multi-plate converters and tested valve bodies for extreme reliability.
View Pro Series UnitsWe Do Not Guess. We Test.
Every valve body we sell or install is verified on our Superflow Axiline test stand. We catch shifting issues in the lab so they never happen on the road.
Schedule a Diagnostic Appointment →Or Call: (616) 772-9551