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Remanufactured Valve Body
Internal
Smart-Tech® Clutch Kit 77734-01K
2.84 Ratio Input Carrier Kit 77284-K
3-4 Clutch Boost Spring 77763-01
Fits '88-later units.
-
Helps cure:
- 3-4 Clutch boost spring collapse
- 3-4 Clutch boost springs inefficient when overheated
Apply Plate & Seal Service Kit 77733-06SVC
Batwing Washer 74582-01K
Fits 5-pinion front planetary.
-
Helps cure:
- Planetary failure
- Planetary wear
Captured Front Planetary Bearing 77747-01
Fits '99-later Captured Front Planetary
- Material: Hardened Steel
- Bearing Style: Enclosed
- Outer Dia.: 2.155"
- Thickness: 0.195"
- Inner Dia.: 1.346"
-
Helps cure:
- Bearing noise
- Bearing failure
Front Planet to Reaction Shaft Thrust Bearing 74238-01
Fits '07-later units.
- Bearing Style: Thrust-Enclosed
- Inner Dia.: 1.660"
- Outer Dia.: 2.500"
- Thickness: 0.170"
-
Helps cure:
- Bearing noise
- Bearing failure
Heavy Duty 3-4 Clutch Backing Plate Kit 74140-01K
Heavy Duty Input Shaft 77733-12SB
Heavy Duty Input Shaft 77733-11SB
Heavy Duty Output Shaft 74678S-HD
Heavy Duty Output Shaft 74678L-HD
Heavy Duty Overrun Clutch Hub 74574-HD
Heavy Duty Reaction Shaft Kit 74602-01K
Input Drum Reinforcement Kit 77733-02K
Input Housing Forward Sleeve Kit 77733-52K
Input Housing Overrun Sleeve Kit 77733-51KA
Pinion Needle Roller 77731-03
Fits 4-pinion rear planetary.
-
Helps cure:
- Planetary failure
- Planetary wear
Pinion Needle Roller 77732-03
For 5-pinion rear planetary assemblies.
-
Helps cure:
- Planetary failure
- Planetary wear
Rear Planetary Pinion Pin 77732-02
4- & 5-Pinion rear planetary
-
Helps cure:
- Planetary failure
- Planetary wear
Shim 77409-15
Front bearing Endplay
- Material: Steel
- Inner Dia.: 1.240"
- Outer Dia.: 1.815"
- Thickness: 0.015"
-
Helps cure:
- Excess endplay
- Driveline noise
Shim 77406-10
Rear bearing
- Material: Steel
- Thickness: 0.010"
- Inner Dia.: 1.725"
- Outer Dia.: 2.310"
-
Helps cure:
- Excess endplay
- Driveline noise
Smart-Tech® Input Housing Kit 77733-06KA
Wide Reaction Sun Gear Bushing 77010-01
May not work in some late-production sun gears with OE finish-in-place bushings. Sun Gear, Wide
- Material: Steel-backed bronze
- Bushing Style: Precision
- Housing Bore: 1.706"
- Shaft Dia.: 1.575"
- Width: 0.600"
-
Helps cure:
- Bushing failure
- Reaction carrier shaft damage
Pump
Boost Valve Kit 77898E-16K
Boost Valve Kit 77898E-14K
Bushing 77005T
Pump
- Bushing Style: Precision
- Material: Bimetal, PTFE-lined
-
Helps cure:
- Worn pump bushing
Line Pressure Booster Kit 4L60E-LB1
Line Pressure Booster Kit 4L60E-LB2
Oversized Pressure Regulator Valve 77917-07
Pump Slide Spring 77722-01K
Rear Stator Support Bushing 77002B
Wider than OE Rear Stator Support
- Bushing Style: Precision
- Material: Steel-backed lead/bronze alloy
- Width: 0.510"
- Inner Dia.: 1.250"
- Housing Bore: 1.360"
- Shaft Dia.: 1.237"
-
Helps cure:
- Bushing wear
- Bushing failure
Rear Stator Support Bushing 77002BT-01
Replacement Seal 77805-S-25
Stator Support Bushing 35007A
- Bushing Style: Precision
- Material: Steel-backed copper alloy
- Width: 0.500"
- Housing Bore: 1.121"
- Inner Dia.: 1.004"
- Shaft Dia.: 1.002"
-
Helps cure:
- Bushing wear
- Bushing failure
Stator Support Shaft Assembly 77918S-09K
280mm or 300mm Converter, reluctor style, '04-later.
-
Helps cure:
- 3-4 Clutch failure
- Code 894, 1870
- Overheated converter
- No 3rd
- Delayed Reverse
Stator Support Shaft Assembly 77918S-1K
280mm or 300mm Converter, non-reluctor style. '99-'04.
-
Helps cure:
- 3-4 Clutch failure
- Code 894, 1870
- Overheated converter
- No 3rd
- Delayed Reverse
Stator Support Shaft Assembly 77918S-08K
298mm Converter, reluctor style
-
Helps cure:
- 3-4 Clutch failure
- Code 894, 1870
- Overheated converter
- No 3rd
- Delayed Reverse
TCC Apply Valve Kit 77805E-K
TCC Solenoid Snout Kit 77942-02K
Fits '97-later PWM units. Built-in anti-drainback valve.
-
Helps cure:
- TCC apply concerns
- Overheated converter
- Loss of lube oil
Valve Body
(View Valve Body Layout Diagram)
3-2 Control Valve Spring 77754-23
For use in '96-later on/ff style 3-2 control valve bodies. It will not work in '93–'95 PWM style 3-2 control valve bodies.
-
Helps cure:
- Broken 3-2 control valve spring
- 3-2 Bind-up
- Overheated 2-4 band
3-4 Relay O-Ringed End Plug Kit 77964-08K
Fits two locations
-
Helps cure:
- Loss of D3 oil
- Loss of 4th signal oil
- No 4th
- Drops out of 4th
AX Code Accumulator Valve Sleeve 77754-61
Accumulator Valve Train Kit 77754-10K
Actuator Feed Limit Valve Kit 77754-09K
-
Helps cure:
- Wrong gear starts
- Solenoid performance codes
- Erratic line pressure
- Clutch failure
- Band failure
- No 4th
- Harsh shifts
- 2nd Gear starts
-
Tooling:
- 77754-TL
EPC Solenoid Harness Adapter 34435-01K
For use with early-style ('92–'02) EPC solenoid in late-style (’03-later) units, solenoid not included.
-
Helps cure:
- Line pressure instability
Forward & Reverse Abuse Bore Plug 77754-21
Forward & Reverse Abuse Valve Kit 77754-35K
Forward Accumulator Piston 74927-AP
Heavy Duty 2-3 Shift Valve 77754-41
Isolator Sleeve Kit 77754-ISO
-
Helps cure:
- Code 894, 1870
- TCC cycling
- TCC slip
- 3-4 Clutch failure
-
Tooling:
- F-77754-TL4
- 77754-RM5
- 77754-R2
- 77754-SERV
- VB-FIX
Oversized 3-4 Shift Valve Kit 77754-42K
-
Helps cure:
- 2nd Gear starts
- Low AFL pressure
- 3rd Clutch failure
- 3-4 Concerns
-
Tooling:
- F-77754-TL42
- VB-FIX
Oversized 4-3 Sequence Valve Kit 77964-14K
Use with OE valve/bore only, addresses wear at inboard two spools & other locations.
-
Helps cure:
- 2-4 Band burned
- Low 4th Gear pressure
- No 4th
- 2nd Quality poor
-
Tooling:
- F-77964-TL14
- VB-FIX
Oversized 4-3 Sequence Valve Kit 77964-04K
-
Helps cure:
- No 4th
- 2-4 Band burned
- Low 4th Gear pressure
-
Tooling:
- 77964-RM2
Oversized Forward & Reverse Abuse Valve Kit 77754-58K
Fits in either of two locations.
-
Helps cure:
- Delayed Forward
- Delayed Reverse
- Forward or Low/Reverse clutch distress
- Damaged valve body casting
- Low line pressure upon engagement
-
Tooling:
- F-77754-TL58
- VB-FIX
Oversized Low Overrun Valve Kit 77754-62K
-
Helps cure:
- Burnt Reverse clutch
- Burnt Low/Reverse clutch
- No Reverse
- No Manual 1st
- Slips in Forward & Reverse
- Low line pressure in Reverse
-
Tooling:
- F-77754-TL62
- VB-FIX
Performance Pack HP-4L60E-01
Pinless Forward Accumulator Piston Kit 77987-01K
TCC Regulator & Isolator Valve Kit 77754-04K
Fits all years & '98-later EC3 units
-
Helps cure:
- Code 894, 1870
- Overheated converter
- Low TCC apply pressure
- 3-4 Clutch burned
- 1-2 Harsh
- Low line pressure
-
Tooling:
- F-77754-TL4
- F-77754-SERV
- 77754-R2
- 77754-SERV
- 77754-RM5
- VB-FIX
TCC Regulator & Isolator Valve Kit 77754-03K
4L60-E '97-earlier only, non-EC3 units
-
Helps cure:
- Code 894, 1870
- Overheated converter
- Low TCC apply pressure
- 3-4 Clutch burned
- 1-2 Harsh
- Low line pressure
-
Tooling:
- F-77754-TL4
- F-77754-SERV
- 77754-R2
- 77754-SERV
- 77754-RM5
- VB-FIX
The Sure Cure® Kit SC-4L60E
Fully compatible with '95-later with PWM/EC3 (electronically controlled capacity clutch) control.
-
Helps cure:
- 3-4 Clutch failure
- Burnt clutches & bands
- Pump noise
- Reduced 3-4 clutch life
- Rotor fracture
- Erratic line pressure
- Low line rise
- 1-2 Harsh
- 2-3 Shift feel poor
- Poor shift quality
- Code 894, 1870
- Falls out of lockup when hot
- No lockup
- TCC slip
Case
3-4 Accumulator Sleeve Kit 77998-01K
-
Helps cure:
- Case damage
- Scored accumulator bores
- Worn accumulator bores
3rd Accumulator Checkball & Seat 74480D
-
Helps cure:
- 2-3 Soft
- 2-3 Flare
- 3-4 Clutch burned
- 2-4 Band burned
- 3-2 Bind-up
- 2-3 Bind-up
Pinless Accumulator Piston Kit 77998-03K
In 200-4R applications, this kit can only be used in the 3-4 accumulator location.
-
Helps cure:
- Poor shift quality
- Burnt clutches & bands
Replacement Seal Kit 77998-03SK
For 77998-03K Pinless Accumulator Piston
-
Helps cure:
- Lost or damaged component
Servo Release Check Valve Kit 77701-076
Wiring Harness Connector Bracket 77980-01K
-
Helps cure:
- Retention tabs break off wiring harness connector
- Connector pushed into pan area
Servo/Band
2nd Gear "Corvette" Ratio Servo Kit 77701-04K
2nd Gear Servo Kit 77701-02K
2nd Gear Super Hold Servo Kit 77911-03K
Extra Wide Intermediate Band 77700-01
Extra Wide Intermediate Band 77700-01K
![Metal Clad Viton® Seal](data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 750 580"%3E%3C/svg%3E)
Metal Clad Viton® Seal 77911-02
Press in
- Material: Fluorocarbon
- Housing Bore: 0.750"
- Shaft Dia.: 0.500"
-
Helps cure:
- 2-3 Concerns
- 2-4 Band failure
Oversized Servo Pin Kit 77787-03K
-
Helps cure:
- Pin bore wear
- No 4th
- Burnt band (GM)
- 2-3 Bind-up
- 3-4 Clutch failure
-
Tooling:
- 77787-RM3
Replacement Seal Kit 77701-04SK
Replacement Seal Kit 77767K-SK
Replacement Seal Kit 77911-03SK
Servo Pin Kit 77787-02K
Other
Tech Resources
January 27, 2025
Understanding 4L60-E Series Isolator Bore Wear & How to Address It
Tory Royce
July 12, 2024
4L60-E Series Input Shaft, Stator & Pump Cover Compatibility: Three Easy Checks
Caleb Perham
January 25, 2023
Uncovering the Root Cause of Pressure & Complaints – The Critical Role of Solenoid Modulator & AFL Valves
Maura Stafford
October 13, 2022
How to Get Started with OE ECU Reprogramming
Jim Mobley
October 19, 2021
GM 4L60 (700-R4), 4L60-E Accumulator Valve Codes — Deciphering the Alphabet Soup of Shift Feel
Maura Stafford
October 08, 2021
GM 4L60-E, 4L65-E, 4L70-E Valve Body Layout
March 30, 2021
The Evolution of Automatic Transmissions Part 2: Inner Workings of Hydraulic Planetary Transmissions
Jason Larochelle
October 28, 2019
The Ultimate 4L60E Reaction Shaft Upgrade for Big Power Transmissions
February 26, 2019
Hydraulics Fundamentals Part II: Accumulators & Shift Feel
Maura Stafford
October 24, 2018
Clean Up Your Shifts with Sonnax Line Pressure Booster Kits
June 06, 2018
All Over the Map: Attacking 4L60/E Burnt 3-4 Clutches with Confidence
Brian Wing
February 08, 2018
Harness that Horsepower! Your Guide to a Sonnax 4L60/E Level 3 Performance Build
August 23, 2017
First, Do No Harm: Things You Should Know about Performance Servos
Gregg Nader
April 28, 2017
4L60E Performance & Heavy-Duty Transmission Build Guides
April 12, 2017
GM 4L60-E Valve Body Identification Guide
March 29, 2017
Transmission Report: Sonnax Voted Tops for Parts & Tools!
March 02, 2016
Guard Against 4L60/E Band & 3-4 Clutch Failure: Test the 3rd Accumulator Checkball Assembly for Leakage
Gregg Nader
March 02, 2016
Building the Killer 4L60E - Top Tips for Optimizing Your Transmission Upgrades
February 22, 2016
Too Close For Comfort: Pinpointing 4L60-E Gear Train Assembly Problems
Steve Garrett
February 22, 2016
Eliminate 3-4 Clutch Failure with the Smart-Tech® Input Housing
April 07, 2015
Drilling Orifices the Smart Way
December 09, 2014
20 Years Later: What’s New with 4L60-E PWM Modifications
June 05, 2013
Solve Multiple 4L60/E Problems in All Performance Applications with the Sonnax SmartShell®
October 16, 2012
Transmission Report: New Sonnax Improvements for the 4L60 3-4 Clutch
March 22, 2011
Don't Get Shook Up
Dan Tucker
October 16, 2010
Transmission Report: SmartShell® and More
May 31, 2009
A New Trick in the Bag: Additional 2nd Gear Servo Size for the 4L60-E
Gregg Nader
March 24, 2009
Transmission Versus Cooler Line
Dan Tucker
April 02, 2008
An Easier Way to Rebuild Planets
Gregg Nader
September 05, 2007
Conquering the Planets
Gregg Nader
July 31, 2007
Deja Vu All Over Again
Ed Lee
November 14, 2006
4L60E Flares on 2-3 Shift? Could be a Bad Computer
Gregg Nader
June 08, 2006
Diagnose with Data
May 14, 2006
Do Not Let Run-Out Make Problems for your 4L60-E
Gregg Nader
January 14, 2005
AFL and AFL
Frank Biolsi
September 15, 2003
Beyond 1870: GM Converter Codes P0741, P0742 and 1887
Gregg Nader