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Vehicle Info NeededGM053-HD Heavy Duty Remanufactured Valve Body, 4L60-E/4L65-E
Ships on 09/14/2026
Lowest Price Guarantee- Heavy Duty Remanufactured Valve Body
- 4L60-E/4L65-E
- Fits '96–'08 units. Enhanced input sprag and Forward Clutch durability by engaging overrun clutch in D3 1st and 2nd Gears. Includes heavy duty 2-3 shift valve for enhanced protection.
Sonnax GM053-HD Features:
Lay the perfect foundation for work trucks and muscle cars alike with premium manufactured valve bodies from Sonnax. Heavy duty remanufactured valve body GM053-HD provides enhanced input sprag and forward clutch durability in D3 1st and 2nd Gears by engaging the overrun clutch for added holding capacity. When towing at highway speeds and wanting more throttle, manually shifting to D3 engages this enhanced protection and additional holding power.
It is also built to overcome chronic shift and converter clutch apply complaints, and provides firmer shifts and a moderately increased pressure curve to improve performance.
Numerous Sonnax valve upgrades are included to restore hydraulic clearances that lead to shift complaints, clutch distress, converter complaints and codes, solenoid issues and pressure problems. Line pressure rise has been moderately increased to overcome shift complaints, delayed engagements, and to increase holding power to the clutches.
To guarantee the highest level of operational performance, this remanufactured valve body is tested on state-of-the art equipment to verify that solenoid feed, clutch, converter and line pressures match or exceed OE specifications.
Brings on the overrun clutch in D3 1st and 2nd Gears plus OE gear ranges for improved forward sprag and forward clutch durabilitySonnax components outperform and outlast OE to eliminate chronic shift and converter apply problemsFirmer shifts under load and moderately increased line pressure improve transmission performance and durabilityThe valve body includes the following:
Oversized TCC regulator valve and sleeve, and limit valve spring for firmer TCC applicationO-Ringed bore plugs and abuse plugsHeavy duty 2-3 shift valve adds overrun clutch control in D3 1st and 2nd GearOverrun control in D3New accumulator control valve and sleeve with springOversized AFL lineupNew Forward accumulator piston and sealNew pressure switch manifoldNew EPC solenoidNew TCC PWM solenoidIncluded with your purchase:
Sonnax line pressure booster kit 4L60E-LB2New separator plate and gasketsTwo new accumulator piston springsSonnax EPC harness adapter 34435-01K for '03-later units.250" CheckballsNote: The two accumulator springs are the same, colors may vary. These springs provide a "stock" shift feel to any previous alterations.
Contains:
Remanufactured Valve BodyCheckballs (8) .250", 1 ExtraSeparator PlateUpper/Case Gasket PlateLower/Valve Body Gasket Plate1-2, 3-4 Accumulator Springs (2)EPC Solenoid Harness AdapterLine Pressure Booster Kit 4L60E-LB2Booster Valve Spacer for '96–'03 pump applications
