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Remanufactured Valve Body
Internal
3-5-R Drum Saver Kit 144555K
-
Helps cure:
- Code P0776
- Flare shifts
- Harsh Reverse
- No Reverse
- 2-3 Harsh
- No 3rd
- 4-5 Harsh
- No 5th
Pump
Oversized TCC Control Valve Kit 144510-05K
-
Helps cure:
- Excess TCC slip
- Low cooler flow
- Overheating
- Low converter & lube flow
- TCC apply & release concerns
- TCC codes
- TCC lining failure
-
Tooling:
- F-144510-TL5C
- VB-FIX
Valve Body
(View Valve Body Layout Diagram)
Actuator Feed Limit Valve Kit 144740-39K
O-Ringed End Plug Kit 144510-14K
Oversized Actuator Feed Limit Valve 144740-01
-
Helps cure:
- No 4th
- No 5th
- No 6th
- Low clutch oil pressure
- Harsh shifts
- Flare shifts
-
Tooling:
- 144740-TL
Oversized TCC Regulator Valve Kit 144740-16K
-
Helps cure:
- Code P0741, P0742
- No lockup
- TCC slip
- Loss of fuel economy
- Low TCC apply pressure
- Overheated fluid & TCC lining
- Harsh TCC apply
-
Tooling:
- F-144740-TL16
- VB-FIX
Signal Accumulator Piston Kit 144740-40K
TCC Regulator Valve Kit 144740-38K
Zip Kit® 6T40-GEN2-3-ZIP
Tech Resources
January 25, 2023
Uncovering the Root Cause of Pressure & Complaints – The Critical Role of Solenoid Modulator & AFL Valves
Maura Stafford
December 29, 2022
Zip Kit FAQ: What's Up with Plugging Separator Plate Ports?
July 01, 2020
Always Identify These Valve Bodies BEFORE You Start a Transmission Rebuild
Andrew Jessiman
September 19, 2019
GM 6T40 & 6T70 Drum Saver Kits: Unbeatable Protection Against 3-5-R Failures & Comebacks
September 10, 2019
Protect Against 6T40 & 6T70 3-5-R Failures & Salvage Damaged Drums with Sonnax Drum Saver Kits
June 02, 2017
GM 6T30/40/45/50 (Gen. 2), 6T40 (Gen. 3) Valve Body Layout
May 25, 2017
GM 6T30/40/45/50 (Gen. 2), 6T35/31/41/46/51 (Gen. 3 6T40) Vacuum Test Guide
September 18, 2014