GM

8L90 Transmission

Tech Resources View all Transmissions

Browse all 8L90 transmission parts here or use the filters below to find just what you are looking for.

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Zip Valve™ Drop-in Parts

Symptoms

Area of Transmission

Part Type

Valve Body

1-3-5-6-7 Accumulator Piston Kit

154740 15k parts

1-3-5-6-7 Accumulator Piston Kit 154740-15K

Helps cure:

Clutch slippage
Burnt clutches
Flare shifts
Ratio codes

Converter Feed Limit Valve Kit

Converter Feed Limit Valve Kit 154740-19K

Helps cure:

Code P0218
Code P0741
Overheated converter
Inadequate lubrication
Excess converter pressure
High TCC slip RPM

Converter Feed Limit Valve Vacuum Test Tool

154740 tl22

Converter Feed Limit Valve Vacuum Test Tool 154740-TL22

Tooling:

VACTEST-01K

O-Ringed End Plug Kit

154740 17k parts

O-Ringed End Plug Kit 154740-17K

Helps cure:

Gear ratio & solenoid codes
Lube failures
Poor lube oil control
Converter concerns
Reduced converter clutch life
TCC apply & release concerns
Burnt converter

Oversized Converter Feed Limit Valve Kit

154740 22k

Oversized Converter Feed Limit Valve Kit 154740-22K

Helps cure:

Excess converter pressure
High TCC slip RPM
Code P0218
Code P0741
Overheated converter
Inadequate lubrication

Tooling:

F-154740-TL22
VB-FIX

Oversized Signal Accumulator Piston Kit

154740 01k parts

Oversized Signal Accumulator Piston Kit 154740-01K

Helps cure:

Poor shift quality
Low line pressure
No converter apply
Hydraulic-related converter codes
Burnt clutches
Soft shifts

Tooling:

154740-TL

Pressure Regulator & Shuttle Valve Kit

154740 02k in parts

Pressure Regulator & Shuttle Valve Kit 154740-02K

Helps cure:

Low line pressure
Burnt clutches
Harsh shifts
Low cooler flow
Loss of lube oil
Overheated transmission & converter
High line pressure

Shuttle Valve Kit

154740 09k in parts

Shuttle Valve Kit 154740-09K

Helps cure:

High line pressure
Harsh shifts
Low cooler flow
Loss of lube oil
Overheated transmission & converter

Signal Accumulator Piston Kit

154740 06k part

Signal Accumulator Piston Kit 154740-06K

Includes 4 piston sets which fit any of 7 locations.

Helps cure:

Poor shift quality
Low line pressure
No converter apply
Hydraulic-related converter codes
Burnt clutches
Soft shifts

Other

Tool Kit 154740-TL

Tool Kit F-154740-TL22

Tooling:

VB-FIX

Tech Resources

April 21, 2021

GM 8L45, 8L90 Vacuum Test Guide

April 21, 2021

Diagnosing 8L45 & 8L90 Shift Complaints: Always Check the VFS Solenoid Circuits

Maura Stafford

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