Symptoms:

  • 3-4 Clutch failure
  • Code 894, 1870
  • Overheated converter
  • No 3rd
  • Delayed Reverse

Cause:

Overheating and manufacturing flaws cause sleeve rotation and block oil flow, which leads to transmission failure.

Correction:

Replace worn or damaged stator shaft with Sonnax stator support shaft assembly.

4L60-E, 4L65-E, 4L70-E

Stator Support Shaft Assembly
Part No. 77918S-09K

280mm or 300mm Converter, reluctor style, '04-later.

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Sonnax stator support shaft assembly 77918S-09K in GM 4L60-E, 4L65-E and 4L70-E transmissions eliminates sleeve rotation by securing the sleeve in place with Loctite®. The assembly is 100% leak tested by Sonnax to ensure a secure seal. Shafts have slotted bolt holes for easy alignment during installation.

  • Slotted bolt holes for easy installation
  • No machining required
  • Bushings installed
  • Stator Support Shaft with Bushings Installed 7.300" Long

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

GM 4L60-E, 4L65, 4L70-E Valve Body Layout

GM 4L60-E, 4L65, 4L70-E Valve Body Layout
  • 4L60-E, 4L65-E, 4L70-E Stator Support Shaft Assembly 77918S-09K
  • 4L60-E, 4L65-E, 4L70-E Stator Support Shaft Assembly 77918S-09K