Drivability issues in the 10L1000 Allison are proving to be signs of advanced wear in the valve body pressure regulation, Feed limit Low, and Feed limit High bore. The current industry accepted repair is to replace the valve body as an assembly. For over a year DHD's Endurance series valve body has set the bar for both value and performance. At its core the Endurance series valve body begins with a new GM assembly, not from a junkyard or reseller. Our transmission technicians perform a series of changes and additions that we have found best improve durability and shift quality. Each valve body is meticulously assembled and tested before shipment.
This Endurance Series valve body fixes both the Feed Limit Low and Feed Limit High bore wear problem. Advanced wear in these feed limit circuits are directly related to harsh up/down shifts, premature clutch failure, Limp Mode, and the dreaded P0747.
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Reviewed by: Christopher05/22/2026 09:53PM
Product ownership: Less than 1 week
Purchased from: Dirty Hooker Diesel
Comments:
I just finished taking my truck for a test/learn cruise and this thing is awesome! Dropped my overall temp 20 degrees, smoother shifting and better TC lockup. It’s a definite improvement over stock.