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Pump
Boost Valve Kit 55209-01K
Bushing 77005T
Pump
- Bushing Style: Precision
- Material: Bimetal, PTFE-lined
-
Helps cure:
- Worn pump bushing
Oversized TCC Control & Enable Valve Kit 55211-22K
Fits dual-valve pumps only
-
Helps cure:
- TCC apply & release concerns
- Falls out of lockup when hot
- No lockup
- Inadequate lubrication
-
Tooling:
- F-55211-TL22
- VB-06
- VB-FIX
Pressure Regulator Valve Kit 55211-08K
-
Helps cure:
- Low pressure
- Pump damaged
- Pump slide wear
- Gear ratio codes
- No 4-5
-
Tooling:
- 55211-TL8
Valve Body
(View Valve Body Layout Diagram)
AFL Valve Kit 55211-01K
-
Helps cure:
- 2nd Gear starts
- Gear ratio codes
- Low line pressure
- High line pressure
- TCC slip
- No 4th
- No 5th
- Forward clutch distress
- OD clutch distress
- Coast clutch distress
-
Tooling:
- F-55211-TL
- VB-FIX
Oversized 3-4, 4-5 & Safety Mode Valve Kit 55211-14K
Fits any of three locations.
-
Helps cure:
- 1-2 Bind-up
- 3-4 Flare
- 4-5 Concerns
- Clutch distress
-
Tooling:
- F-55211-TL14
- VB-FIX
Oversized Low Pressure Control Valve Kit 55211-17K
-
Helps cure:
- 3-2-1 Bump
- Harsh/No engine braking
- Clutch failure
-
Tooling:
- F-55211-TL17
- VB-FIX
TCC Regulator Valve Kit 55211-04K
Replaces OE valves with .511" & .437" dia. valve spools. For OE valve with .437" dia. balance spool
-
Helps cure:
- Code 894, 1870
- No lockup
- TCC slip
- No Reverse
- Overheated converter
- Harsh TCC apply
-
Tooling:
- F-55211-TL4
- VB-FIX
Tech Resources
January 25, 2023
Uncovering the Root Cause of Pressure & Complaints – The Critical Role of Solenoid Modulator & AFL Valves
Maura Stafford
November 24, 2015
GM 5L40-E, 5L50-E Vacuum Test Guide
December 12, 2014
GM 5L40-E, 5L50-E Valve Body Layout
January 01, 2013
5L40/50-E Valve Body Identification
Valve Body Xpress
January 01, 2013
5L40/50-E Solenoid Identification
Valve Body Xpress
February 28, 2009
5L40E/5L50-E: Isolating Concerns Re: Loss of Reverse or TCC
Bob Warnke