GM

4L60 Transmission

Related Units 4L60 Tech Resources View all Transmissions
Remanufactured Valve Body
Gm044

4L60
Remanufactured Valve Body GM044

Electronic TCC

Gm043

4L60
Remanufactured Valve Body GM043

Hydraulic TCC

Sonnax rebuilt valve body GM043 is no longer in production. Please check with your distributor for availability. For service inquiries, please see details on Sonnax’s Limited Lifetime Warranty on remanufactured valve bodies.

Internal
77284 k

2.84 Ratio Input Carrier Kit 77284-K

77763 01

3-4 Clutch Boost Spring 77763-01

1988 & later

    Helps cure:
  • 3-4 Clutch boost spring collapse
  • 3-4 Clutch boost springs inefficient when overheated
8667424

3-4 Clutch Boost Spring & Retainer Assembly 8667424

'88-Later

    Helps cure:
  • 3-4 Clutch failure
77731 05

Batwing Washer 77731-05

Fits 4-pinion rear planetary.

    Helps cure:
  • Planetary failure
  • Planetary wear
Sbk g12

Bearing Kit SBK-G12

1982 & later

    Helps cure:
  • Bearing noise
  • Bearing failure
77764 01

Billet Forward Clutch Piston 77764-01

77409 15

Front Endplay Shim 77409-15

Endplay

  • Material: Steel
  • Inner Dia.: 1.240"
  • Outer Dia.: 1.815"
  • Thickness: 0.015"
    Helps cure:
  • Excess endplay
77732 09

Front Planetary Pinion Pin 77732-09

    Helps cure:
  • Planetary failure
  • Planetary wear
731

Governor 731

250, 305 & 350 Gas engines

    Helps cure:
  • Shift concerns
730

Governor 730

Gas

    Helps cure:
  • Shift concerns
729

Governor 729

Mostly diesel

    Helps cure:
  • Shift concerns
702

Governor Gear Kit 702

  • Color: Blue
    Helps cure:
  • Shift concerns
74140 01k

Heavy Duty 3-4 Clutch Backing Plate Kit 74140-01K

Requires ‘91-later 3-4 apply ring stamped with number “7”, measuring 3.671–3.682" in height.

77733 10s

Heavy Duty Input Shaft 77733-10S

Fits '85-later 298mm units with 30-spline input shaft. For '82-84 298mm units with 27-spline input shaft, converter and stator shaft will need to be updated to '85-later design.

74574 hd

Heavy Duty Overrun Clutch Hub 74574-HD

77733 51k

Input Drum Reinforcement Kit 77733-51K

Sleeve, Seal, & Custom Piston

77733 02k

Input Drum Reinforcement Kit 77733-02K

Sleeve & Seal

77731 01

Pinion Gear 77731-01

Rear Planetary

    Helps cure:
  • Planetary failure
  • Planetary wear
77731 03

Pinion Needle Roller 77731-03

Fits 4-pinion rear planetary.

    Helps cure:
  • Planetary failure
  • Planetary wear
77731 02k new

Pinion Pin 77731-02K

Fits 4-pinion rear planetary.

    Helps cure:
  • Planetary failure
  • Planetary wear
77731 rk in combo

Planetary Rebuild Kit 77731-RK

Fits 4-pinion rear planetary

    Helps cure:
  • Planetary failure
  • Planetary wear
77732 02

Rear Planetary Pinion Pin 77732-02

    Helps cure:
  • Planetary failure
  • Planetary wear
77733 13k

Reinforced Input Housing Kit with Heavy Duty Input Shaft 77733-13K

Fits 298mm units only

77731 04

Round Washer 77731-04

Fits 4-pinion rear planetary.

    Helps cure:
  • Planetary failure
  • Planetary wear
77406 10

Shim 77406-10

  • Material: Steel
  • Thickness: 0.010"
  • Inner Dia.: 1.725"
  • Outer Dia.: 2.310"
    Helps cure:
  • Excess endplay
  • Driveline noise
77733 06k

Smart-Tech® Input Housing Kit 77733-06K

77733 10k

Smart-Tech® Input Housing Kit with Heavy Duty Input Shaft 77733-10K

Fits '85-later 298mm units with 30-spline input shaft. For '82-84 298mm units with 27-spline input shaft, converter and stator shaft will need to be updated to '85-later design.

77749 02k

SmartShell® Heavy Duty Reaction Shell Kit 77749-02K

Heavy duty reacion shell

77409 16

Thrust Washer 77409-16

Selective, OE-Style

  • Material: Steel
  • Inner Dia.: 1.240"
  • Outer Dia.: 1.815"
  • Thickness: 0.096"
    Helps cure:
  • Excess endplay
77010 01

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
77005t

Bushing 77005T

Pump

  • Material: Bimetal, PTFE-lined
  • Bushing Style: Precision
77917 08

Elevated Pressure Main Pressure Regulator Spring 77917-08

    Helps cure:
  • Low base line pressure
700r4 lb1

Line Pressure Booster Kit 700R4-LB1

77917 06

Oversized Pressure Regulator Valve 77917-06

    Helps cure:
  • Erratic line pressure
  • Low line rise
  • Clutch slippage
  • Excess pump noise
  • 3-4 Clutch failure
65797

Pump Slide Pivot Pin 65797

77722 01k

Pump Slide Spring 77722-01K

Replaces 2 OE springs

77917 rv

Pump Spring Spacer 77917-RV

1280

Pump Vane 1280

    Helps cure:
  • Lost or damaged component
77002b

Rear Stator Support Bushing 77002B

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
77002bt 01

Rear Stator Support Bushing 77002BT-01

Rear Stator Support

  • Bushing Style: Precision
  • Material: Bimetal, PTFE-lined
  • Housing Bore: 1.360"
  • Shaft Dia.: 1.237"
  • Assembled Height: 0.510"
  • Width: 0.510"
K77898a

Reverse Boost Valve Kit K77898A

Large ratio, Factory style sleeve, no O-rings

    Helps cure:
  • Low Reverse boost
  • Delayed Reverse
  • Low line pressure
  • Poor upshift in manual low
K77898

Reverse Boost Valve Kit K77898

Large ratio, O-ring style

    Helps cure:
  • Low line pressure
  • Low Reverse boost
  • Delayed Reverse
  • Poor upshift in manual low
77805 s 25

Seal 77805-S-25

  • Material: PTFE
35007a

Stator Support Bushing 35007A

‘84-Later

  • 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
77918sbk

Stator Support Bushing Kit 77918SBK

For 77918S-K Stator Support Shaft

    Helps cure:
  • Bushing wear
  • Bushing failure
35007b

Stator Support Shaft Bushing 35007B

‘82–‘84 (4L60 early, small shaft diameter)

  • Bushing Style: Precision
  • Material: Steel-backed copper alloy
  • Width: 0.500"
  • Housing Bore: 1.121"
  • Inner Dia.: 0.908"
  • Shaft Dia.: 0.906"
    Helps cure:
  • Bushing wear
  • Bushing failure
77918s k

Stator Support Shaft Kit 77918S-K

298mm or 245mm Converter, non-reluctor style, Universal bolt pattern

    Helps cure:
  • Overheated converter
  • Delayed Reverse
  • No 3rd
  • 3-4 Clutch failure
  • Code 1870
77805 k

TCC Apply Valve Kit 77805-K

Fits non-PWM units only.

    Helps cure:
  • No lockup
  • Falls out of lockup when hot
  • Fluid blown out fill tube
  • Lockup immediately after 2nd gear
  • Code 1870
77942 01k

TCC Solenoid Snout Kit 77942-01K

'96-Earlier

    Helps cure:
  • TCC apply concerns
  • Overheated converter
  • Loss of lube oil
77917 500

TV Boost Valve Kit 77917-500

.500" Dia., O-ring style

    Helps cure:
  • Soft slide shifts
  • 3-4 Clutch burned
  • Reduced band life
77917 02k

TV Boost Valve Kit 77917-02K

.423" Dia., Factory-style sleeve (no O-rings)

    Helps cure:
  • Soft slide shifts
  • 3-4 Clutch burned
  • Reduced band life
77917 01k

TV Boost Valve Kit 77917-01K

.423" Dia., O-Ring style

    Helps cure:
  • Soft slide shifts
  • 3-4 Clutch burned
  • Reduced band life
77917 471

TV Boost Valve Kit 77917-471

.471" Dia., O-ring style

    Helps cure:
  • Soft slide shifts
  • 3-4 Clutch burned
  • Reduced band life
77917 03k

TV Boost Valve Kit 77917-03K

.471" Dia., Factory-style sleeve (no O-rings)

    Helps cure:
  • Soft slide shifts
  • 3-4 Clutch burned
  • Reduced band life
77917 04k

TV Boost Valve Kit 77917-04K

.500" Dia., Factory-style sleeve (no O-rings)

    Helps cure:
  • Soft slide shifts
  • 3-4 Clutch burned
  • Reduced band life
Valve Body
77777l k

Accumulator Valve Train Kit 77777L-K

Fits "L" version valve trains in light/medium weight vehicles only. Fits 4L60 '87-later auxiliary valve body styles only. Valve dia. = .330".

    Helps cure:
  • 1-2 Bang at light throttle
  • Reduced 2-4 band life
77777m k

Accumulator Valve Train Kit 77777M-K

Fits "M" version valve trains in heavy vehicles only. Fits 4L60 '87-later auxilary valve body styles only. Valve dia. = .341".

    Helps cure:
  • 1-2 Bang at light throttle
  • Reduced 2-4 band life
10000 10

Checkball 10000-10

Imidized Plastic, .312" Dia.

  • Material: Imidized Plastic
  • Dia.: 0.312"
10000 08

Checkball 10000-08

Imidized Plastic, .250" Dia.

  • Material: Imidized Plastic
  • Dia.: 0.250"
    Helps cure:
  • Lost or damaged component
77754 08

Clip 77754-08

  • Height: 1.010"
  • Width: 0.520"
77968

Oversized Throttle Valve 77968

    Helps cure:
  • Low line rise
  • 3-4 Clutch & band failure
77872 01

Shortened TV Link 77872-01

    Helps cure:
  • Low line rise
  • Soft shifts
  • 3-4 Clutch failure
  • 3-4 Band failure
77968 01k

TV Plunger Spring 77968-01K

    Helps cure:
  • Low throttle pressure
  • Low line pressure
Sc 4l60 web

The Sure Cure® Kit SC-4L60

    Helps cure:
  • 3-4 Clutch failure
  • Burnt clutches & bands
  • Excess pump noise
  • Low line pressure
  • Low line rise
  • Low Reverse boost
  • 2-3 Shift feel poor
  • Early upshifts
  • Soft upshifts
  • Soft shifts
  • Slide shifts
  • Delayed Reverse
77968 02

Throttle Valve 77968-02

    Helps cure:
  • Lost, damaged or modified original valve
77966 94mk

Throttle Valve Plunger Kit 77966-94MK

Prevents forced 4-3 kickdown below three-quarter throttle

    Helps cure:
  • Low line rise
  • Early upshifts
  • Soft upshifts
  • Premature 3-4 clutch failure
  • Low line pressure
77966 94k

Throttle Valve Plunger Valve Kit 77966-94K

Replacement for OE plungers with “94” code.

    Helps cure:
  • Low line rise
  • Early upshifts
  • Soft upshifts
  • Premature 3-4 clutch failure
  • Low line pressure
Case
74926

1-2 or 3-4 Accumulator Spring 74926

    Helps cure:
  • Soft shifts
77998 01k

3-4 Accumulator Sleeve Kit 77998-01K

    Helps cure:
  • Case damage
  • Scored accumulator bores
  • Worn accumulator bores
74480d

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
77704s

Enhanced Performance Accumulator Spring 77704S

77999

Oversized Accumulator Pin 77999

    Helps cure:
  • Reduced band life
  • Reduced clutch life
  • 2-3 Bind-up
  • 2nd Gear starts
  • Poor shift quality
77999 02k

Oversized Accumulator Pin & Reamer Kit 77999-02K

    Helps cure:
  • Reduced band life
  • Reduced clutch life
  • 2-3 Bind-up
  • 2nd Gear starts
  • Poor shift quality
77998 03k

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
77998 03sk

Replacement Seal Kit 77998-03SK

Seals Fit 77998-03K Piston

77701 076

Servo Release Check Valve Kit 77701-076

2nd Gear Servo Release

    Helps cure:
  • Reduced 3-4 clutch life
  • 2-3 Shift feel poor
  • 3-2 Bind-up
Servo/Band
77701 04k

2nd Gear "Corvette" Ratio Servo Kit 77701-04K

77911 03k

2nd Gear Super Hold Servo Kit 77911-03K

77767k

4th Gear Super Hold Dual Servo Kit 77767K

77700 01

Extra Wide Intermediate Band 77700-01

Red Material

  • Color: Red
77700 01k

Extra Wide Intermediate Band 77700-01K

Kevlar® Material

Missing image

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
77701 04sk

Replacement Seal Kit 77701-04SK

For 77701-04K

77767k sk

Replacement Seal Kit 77767K-SK

77911 03sk

Replacement Seal Kit 77911-03SK

For 77911-03K 2nd Gear Superhold Servo

77787 02k

Servo Pin Kit 77787-02K

Extra long pin, with seals

Other
77764 instl

Forward Piston Installation Tool 77764-INSTL

As1 01k

TV Cable Corrector Kit AS1-01K

As5 05k

TV Cable Corrector Kit AS5-05K

Fits Edlebrock®-style linkage.

As4 04k

TV Cable Corrector Kit for Holley Carburetors AS4-04K

Fits carburetors with Holley® aftermarket-style throttle arm.

As6 01 po

Throttle Cable & TV Cable Bracket AS6-01

Fits Holley® carburetors.

77917 tlc

Tool Kit 77917-TLC

77917 tl

Tool Kit 77917-TL

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