GM

4L85-E Transmission

Tech Resources View all Transmissions
Remanufactured Valve Body

Required

Required

Required

4L80-E, 4L85-E Remanufactured Valve Body GM030

4L80-E, 4L85-E
Remanufactured Valve Body GM030

Fits '04-later units. Smart-Tech® overrun clutch valve kit installed.

Required

4L80-E, 4L85-E Remanufactured Valve Body GM027

4L80-E, 4L85-E
Remanufactured Valve Body GM027

’92–’96, Temperature Sensor in Wire Harness

Required

4L80-E, 4L85-E Remanufactured Valve Body GM033

4L80-E, 4L85-E
Remanufactured Valve Body GM033

Fits '97-'03 units. Smart-Tech® overrun clutch valve kit installed.

Internal
Zip Kits

Bearing Kit SBK-G10

1976-1997

    Helps cure:
  • Bearing noise
  • Bearing failure
Zip Kits

Bearing Kit SBK-G20

1991 & later

    Helps cure:
  • Bearing noise
  • Bearing failure
Zip Kits

Direct Drum Sleeve Kit 34838-01K

In 4L80-E units, part can be used in either early or late-model drums.

    Helps cure:
  • Direct clutch failure
  • Delayed 3rd
  • Delayed Reverse
  • Code 87, 730, 756, 1811
  • No 3rd
  • No Reverse
  • Maximum line presssure
  • No 4th
  • 2nd Gear starts w/MIL on
  • TCC slip codes
Zip Kits

Extreme Duty Main Shaft 34672-05

  • Material: Aermet
Zip Kits

Forward Clutch Hub Front Washer 34298-078

Forward Hub

  • Material: Steel
  • Thickness: 0.078"
  • Outer Dia.: 1.781"
  • Inner Dia.: 1.289"
    Helps cure:
  • Excess front endplay
Zip Kits

Forward Clutch Hub Washer (Rear) 34301-094

Forward Clutch Drum

  • Material: Steel
  • Thickness: 0.094"
  • Outer Dia.: 1.780"
  • Inner Dia.: 1.405"
    Helps cure:
  • Excess front endplay
  • Forward clutch & sealing ring failure
  • Reduced bearing, thrust washer & sealing ring life
Zip Kits

Forward Clutch Hub Washer (Rear) 34301-078

Forward Clutch Drum

  • Material: Steel
  • Thickness: 0.078"
  • Outer Dia.: 1.780"
  • Inner Dia.: 1.405"
    Helps cure:
  • Excess front endplay
  • Forward clutch & sealing ring failure
  • Reduced bearing, thrust washer & sealing ring life
Zip Kits

Front/Rear Unit Endplay Shim 34500-Z

Updated 3-tang style shim fits all units, including '97-later 4L80/85-E.

  • Material: Steel
  • Tang Count: 3
  • Inner Dia.: 1.165"
  • Thickness: 0.010"
  • Outer Dia.: 1.940"
    Helps cure:
  • Excess front endplay
  • Excess rear endplay
  • Burnt Forward clutch
  • Premature seal ring failure
Zip Kits

Heavy Duty Main Shaft 34672-01

  • Material: 300M
Zip Kits

Oversized Seal Rings 34716-01

  • Material: PTFE
  • Seal Style: Solid
  • Height: 0.096"
  • Width: 0.101"
  • Outer Dia.: 0.918"
    Helps cure:
  • Wear grooves in the Forward drum ID bore
  • Delayed engagement
  • Burnt Forward clutch
Zip Kits

Pinion Batwing Washer 34880-03

Output & reaction planetaries, 1999 & Later

    Helps cure:
  • Output & planet assembly wear
  • Output & planet assembly failure
Zip Kits

Pinion Roller 34880-02

Output & reaction planetaries, 1999 & Later

    Helps cure:
  • Output & planet assembly wear
  • Output & planet assembly failure
Zip Kits

Planetary Rebuild Kit 34880RK

Output & reaction planetaries, 1999 & Later

    Helps cure:
  • Output & planet assembly wear
  • Output & planet assembly failure
Zip Kits

Planetary Thrust Bearing 34821-01

  • Bearing Style: Enclosed
  • Material: Hardened Steel
  • Outer Dia.: 1.802"
  • Thickness: 0.168"
  • Inner Dia.: 1.132"
    Helps cure:
  • Bearing noise
  • Bearing failure
Zip Kits

Rear Unit Endplay Shim 34006-05

.005" Thick

  • Material: Steel
  • Inner Dia.: 2.375"
  • Thickness: 0.005"
  • Outer Dia.: 3.250"
    Helps cure:
  • Excess rear endplay
Pump
Zip Kits

Boost Valve Kit 34200-10K

With encapsulated relief valve.

    Helps cure:
  • Uncontrollable line rise
  • High line pressure
  • Broken parts
  • Broken clutch piston
Zip Kits

Boost Valve Kit 34200-01K

O-Ring style. Kit can be retrofit to back to '89 units. See instructions for details.

    Helps cure:
  • Uncontrollable line rise
  • High line pressure
  • Broken parts
  • Broken clutch piston
Zip Kits

Boost Valve Kit 34200-03K

Fits '91-later units with factory-style sleeve. Can be retrofit to '89-91 units. See instructions for details.

    Helps cure:
  • Uncontrollable line rise
  • High line pressure
  • Broken parts
  • Broken clutch piston
Zip Kits

Lube Regulated Pressure Regulator Valve 34200-14K

    Helps cure:
  • Engine surge at idle
  • Low cooler flow
  • Low TCC release pressure
Zip Kits

O-Ringed End Plug Kit 34994-13

Fits TCC valve bore with .497" dia.

    Helps cure:
  • No converter apply
  • Burnt converter
Zip Kits

O-Ringed End Plug Kit 34994-14K

Fits .668" dia. bores

    Helps cure:
  • No converter apply
  • 1-2, 2-3, 4-5 Flares
Zip Kits

O-Ringed End Plug Kit 34200-05K

TCC & PR Valves

  • Dia.: 0.625"
    Helps cure:
  • Pressure loss
  • TCC apply concerns
  • Burnt clutches
  • Harsh shifts
  • Soft shifts
Zip Kits

Oversized Line-to-Lube Pressure Regulator & Boost Valve Kit 34200-36K

Fits '99-later units.

    Helps cure:
  • Engine surge at idle
  • Low cooler flow
Zip Kits

Pump Gear Set 34201E-SP

    Helps cure:
  • Lost or damaged component
Zip Kits

Stator Support Bushing 34016-W

Front Stator Support

  • Bushing Style: Precision
  • Material: Steel-backed bimetal
  • Width: 0.675"
  • Shaft Dia.: 1.123"
  • Housing Bore: 1.244"
    Helps cure:
  • TCC slip codes
  • No lockup
  • Overheated fluid
  • No Overdrive
Valve Body
Zip Kits

#7 Low/Reverse Checkball Seat 34200-52

Fits units '95-later.

    Helps cure:
  • Burnt Reverse band
  • Delayed Reverse
  • No Reverse
  • No engine braking in manual low
Zip Kits

1-2 & 2-3 Shift Valve Spring Kit 34994-02K

    Helps cure:
  • Repeated Solenoid B code 86
  • Repeated Solenoid B code 87
  • 2nd Gear starts
  • No 4th
  • 3-4 Neutral
  • No 3rd
Zip Kits

1-2 Shift Solenoid 24230288

1991 & Later

    Helps cure:
  • Shift concerns
Zip Kits

3rd & Reverse Checkball Sleeve Kit 34200-47K

Fits units '95-later.

    Helps cure:
  • 3rd Slip
  • 4th Slip
  • Gear ratio codes
  • Direct clutch burned
  • Reverse slip
Zip Kits

AFL Filter End Plug & O-Ring Kit 34994-17K

    Helps cure:
  • Broken AFL filters
  • 2nd Gear starts
  • Leaking AFL end plug
  • Code 68, 85, 86, 87
  • No upshifts
Zip Kits

Actuator Feed Limit Valve Kit 34200-16K

    Helps cure:
  • Wrong gear starts
  • Clutch failure
  • Solenoid performance codes
  • No 4th
  • Band failure
  • Low solenoid feed pressure
  • 2-3 Neutral
  • 2nd Gear starts
  • Code 68, 85, 86, 87
Zip Kits

Checkball 10000-08

Imidized Plastic, .250" Dia.

  • Material: Imidized Plastic
  • Dia.: 0.250"
    Helps cure:
  • Lost or damaged component
Zip Kits

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
Zip Kits

End Plug 34994-11

Fits TCC valve bore with .500" dia.

  • Dia.: 0.500"
    Helps cure:
  • No converter apply
  • 1-2, 2-3, 4-5 Flares
Zip Kits

Manual Valve 34994-16

    Helps cure:
  • Bent valves
  • Low line rise
  • Delayed engagement
  • Gear loss
Zip Kits

Manual Valve Kit 34994-16K

    Helps cure:
  • Bent valves
  • Low line rise
  • Delayed engagement
  • Gear loss
  • Broken AFL filters
  • Leaking AFL end plug
  • 2nd Gear starts
  • Code 68, 85, 86, 87
  • No upshifts
Zip Kits

Oversized Accumulator Control Valve Kit 34994-22K

    Helps cure:
  • Soft shift & low accumulator pressure
  • High line pressure in Drive
  • Low line rise in Reverse
Zip Kits

Oversized TCC Regulator Valve Kit 34994-18K

    Helps cure:
  • TCC codes
  • TCC apply & release concerns
  • Converter shudder
  • Burnt converter
Zip Kits

Pressure Switch Manifold 24222077

'91-Later

    Helps cure:
  • Shift concerns
Zip Kits

Reverse Checkball Sleeve 34200-38

Fits units '95-later.

    Helps cure:
  • Reverse slip
  • Gear ratio codes
  • 3rd Slip
  • 4th Slip
  • Direct clutch burned
  • No Reverse
Zip Kits

Smart-Tech® Overrun Clutch Valve Kit 34200-40K

Fits units '97-later.

    Helps cure:
  • OD roller clutch failure
  • No Forward
  • Overrun clutch distress
Zip Kits

Snap Ring 34994-15

  • Housing Bore: 0.669"
    Helps cure:
  • Lost or damaged component
Zip Kits

TCC Regulator Valve Kit 34994-01K

    Helps cure:
  • TCC codes
  • TCC apply & release concerns
  • Converter shudder
  • Burnt converter
Zip Kits

The Sure Cure® Kit SC-4L80E

    Helps cure:
  • Burnt converter
  • Bushing walks out
  • Case damage
  • Clutch failure
  • Band failure
  • Solenoid performance codes
  • Broken parts due to excessive line pressure
  • Buzzing noise
  • Metal contamination
  • Output shaft & case damage
  • High line pressure
  • Uncontrollable line rise
  • 2-3 Neutral
  • 3-4 Neutral
  • No 4th
  • 2nd Gear starts
  • Wrong gear starts
  • Converter shudder
  • TCC apply & release concerns
  • TCC slip codes
Zip Kits

Vacuum Test Plate Kit 34994-VTP

Case
Zip Kits

Case Bushing 34006-SP

Case, No Walk Out

  • Material: Bronze
  • Bushing Style: Precision
  • Width: 0.690"
  • Shaft Dia.: 2.006"
  • Housing Bore: 2.129"
    Helps cure:
  • Bushing walks out
  • Case damage
  • Output shaft & case damage
  • Metal contamination
Zip Kits

Manual Shift Shaft Kit 38511-04K

'95-Later with external neutral safety swich

    Helps cure:
  • Lost or damaged component
Zip Kits

Shift Cable Mount Bracket 34913-01

    Helps cure:
  • Early cases without shifter bracket bosses cannot be used in 1996 - 97 vehicles
  • Damaged OE shifter bracket bosses
Servo/Band
Zip Kits

Retaining Clip 34989-01

Rear Servo Piston

    Helps cure:
  • Lost or damaged component
Zip Kits

Reverse Servo Spacer Kit 34528-01K

Fits '96-later.

    Helps cure:
  • Broken Low/Reverse servo piston
  • No Reverse
Other
Zip Kits

4th Accumulator Repair Kit 34805-01K

    Helps cure:
  • Damaged accumulator bore
  • Poor shift quality
  • Loss of accumulator control
Zip Kits

Tool Kit F-34994-TL18

Zip Kits

Tool Kit F-34994-TL22

Zip Kits

Tool Kit F-34200-TL36

Zip Kits

Tool Kit 77754-TL

Zip Kits

Wiring Harness Connector Bracket 34998-01K

Fits late style connector only.

    Helps cure:
  • Connector pushed into pan area
  • Retention tabs break off wiring harness connector