Transmission Parts GM 5L50-E 5L40-E Valve Body Valve / Sleeve

Symptoms:

1-2 Bind-up
3-4 Flare
4-5 Concerns
Clutch distress

Cause:

Valve bore wear results in loss of apply oil, sluggish valve movement and sticking valves causing shift complaints and clutch distress.

Correction:

Install the Sonnax oversized valve kit that fits in any of the three locations (3-4 and 4-5 shift valve, safety mode valve) after refurbishing the bore to eliminate bore wear and sticking valves.

Warning:

Required tool kit F-55211-TL14 is no longer in production. Check with your distributor for availability.

5L40-E, 5L50-E

Oversized 3-4, 4-5 & Safety Mode Valve Kit
Part No. 55211-14K

Fits any of three locations.

Tooling:

F-55211-TL14
VB-FIX

You need this if... View Instructions Find a Distributor

A stuck or worn safety mode valve in GM 5L40-E, 5L50-E can result in the L/R clutch staying applied on a 1-2 upshift, causing a 1-2 bind-up condition. Wear at the 3-4 or 4-5 shift control valves allows signal and apply oil pressure to exhaust, preventing proper valve movement that causes flares, shift complaints and clutch distress. Reconditioning the bore and installing Sonnax oversized 3-4, 4-5 and safety mode valve kit 55211-14K restores the necessary hydraulic clearances required for proper valve function.

Oversized valve kit allows elimination of bore wear
Hardcoat anodized aluminum valves combat premature wear
Annular grooves prevents future side load wear
One valve kit can be used in any of three OE locations

Note

This kit can be used in any of three locations. If using in the safety mode valve location, the control (small) valve is not used.

Contents

Shift Valve
Control Valve
Spring

Valve Body Layout

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.