Tool Required VB-FIX Required

Printpartsummary
Symptoms:
  • Gear ratio codes
  • Low pressure
  • No 4-5
  • Pump damaged
  • Pump slide wear
Cause:

Wear at the main pressure regulator bore causes instability in decrease oil and balance oil.

Correction:

This kit enables the repair of the pressure regulator bore, returning stability to decrease oil and balance oil.

Tool Required VB-FIX Required

5L40-E, 5L50-E

Pressure Regulator Valve Kit

Part No.

55211-08K

Pressure Regulator Valve Kit
  • 55211-08k_combo

  • Pressure Regulator Valve Kit

Small_55211-08k_combo Small_55211-08k

5L40-E, 5L50-E

Pressure Regulator Valve Kit

Part No. 55211-08K

  • Valve
  • Sleeve
  • Spring Pin

Complaint:

  • Gear ratio codes
  • Low pressure
  • No 4-5
  • Pump damaged
  • Pump slide wear

Cause:

Wear at the main pressure regulator bore causes instability in decrease oil and balance oil.


Correction:

This kit enables the repair of the pressure regulator bore, returning stability to decrease oil and balance oil.

  • Valve and sleeve kit restores hydraulic integrity to the pressure regulator valve circuit.
  • Allows salvage of expensive pumps.

Required Tools

You need this if...

A vacuum test at the Balance port holds less than 18" of vacuum. You must temporarily plug the Internal Feed hole to conduct this test. Be sure to un-block Internal Feed when done.

  • Test Locations

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Valve Body Layouts

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.

Valve Body Layout GM 5L40-E, 5L50-E

Related Tech Articles

Sonnax

GM 5L40-E, 5L50-E Vacuum Test Guide

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