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Symptoms:
  • No lockup
  • No Overdrive
  • Overheated fluid
  • TCC slip codes
Cause:

TCC apply oil leaks past the front stator support bushing.

Correction:

This wide front stator support bushing fills the entire stator support shaft bore.

4L80-E, 4L85-E

Stator Support Bushing

Part No.

34016-W

Stator Support Bushing
  • Stator Support Bushing

Small_34016-w

4L80-E, 4L85-E

Stator Support Bushing

Part No. 34016-W

Package Quantity: 4

Complaint:

  • No lockup
  • No Overdrive
  • Overheated fluid
  • TCC slip codes

Cause:

TCC apply oil leaks past the front stator support bushing.


Correction:

This wide front stator support bushing fills the entire stator support shaft bore.

  • Width: 0.675"
  • Housing Bore: 1.244"
  • Shaft Dia.: 1.123"
  • Bushing Style: Precision
  • Material: Steel-backed bimetal

GM 4L80-E and 4L85-E units may display no converter lockup or codes 68, 39, 1870 or P0741. Imbalance of torque converter clutch apply oil through the front stator support bushing contributes to this complaint. A journal clearance of .002" or more will generate sufficient leakage to cause lockup clutch slippage, causing the transmission to stay in third gear. Sonnax front stator support bushing 34016-W is designed to reduce leakage by minimizing journal clearance and also increasing journal length.

NOTE:

Due to stator shaft variations, in some cases it may be necessary to hone the bushing I.D. slightly for proper fit. See instructions for details.

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Contact a Sonnax Distributor to purchase this part.