Sonnax remanufactured valve body GM6T40-1 has been designed to address common issues, such as: no 4th, 5th and/or 6th gear; harsh shifts; flare shifts; burnt clutches; TCC apply concerns; P0741 and 742 codes; delayed engagements; low converter and lube flow; downshift clunks, and a variety of other drivability complaints.
Features & Benefits:
Each bore is inspected, vacuum-tested and repaired as needed to ensure hydraulic integrity and functionality
New, OE bonded separator plate and gaskets installed
Top-quality Sonnax components optimize valve body function and prevent future wear
Robust VBT 8000 testing guarantees OE performance from every unit; compensator feed, AFL, clutch, torque converter pressures match new OE specs
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