6L90

Fits 6L45, 6L50, 6L80, 6L90 2006-on

This 6L80 Shift Kit fits 2006 and newer General Motors vehicles equipped with the popular 6L45, 6L50, 6L80 and 6L90 automatic transmissions. These transmissions often come in with a delaminating Pressure Regulator (PR) valve which wears out the PR valve bore in the pump causing erratic line pressure. Another area of wear concern is the solenoid regulator valve bore. Wear in both areas can cause various shift complaints and codes, delayed engagements and broken hard parts due to high pressure spikes.

Features and benefits:
This TransGo Shift Kit utilizes all drop-in valves for quick, no-hassle install, without reaming or tooling.

The TransGo drop-in redesign USA-made hardened steel TCC regulator valve, features longer lands which restores the hydraulic integrity of the circuit by utilizing previously unused and therefore unworn areas of their bore. In addition, the special design valve and spring calibration enables the computer to control the TCC regulation more accurately, which results in better slip control. Lastly, the drop-in USA-made hardened steel clutch select valves greatly help prevent the valves from sticking in their bores

The precision ground USA-made hardened steel PR valve provides full-time line-to-lube and restores the hydraulic integrity of the circuit. It has re-positioned longer lands at both ends of the valves which promote better support less wear. As a result, this new valve is a drop-in fix even with a pump that has substantial bore wear. A new boost valve and bushing is also provided with a built in EPC pressure relief to eliminate the possibility of damaging high line pressure spikes. In addition, to address the solenoid regulator valve bore wear, a drop in system using a precision ground USA-made hardened steel valve and a valve guide insert is used. Consequently, it no longer uses the original worn bore and easily restores the hydraulic integrity of the solenoid regulator valve circuit.

Finally, the kit includes new rubber seals and diaphragms to renew the TEHCM pressure switches. The kit also includes TransGo engineered high temperature stator rings, to salvage problematic early style pump stator support without locking sealing rings.

Corrects/Prevents/Reduces:

• Erratic shifts
• Delay or delay-bang forward, as well as delay reverse engagements
• Extreme pressure damage
• Damaged pressure switches
• Codes: P0729, P0731, P0732, P0733, P0734, P0735, P0751, P0752, P0756, P0757, P0761, P0762, P0776 and P0777

Includes:

• Precision ground drop-in steel pressure regulator valve, spring and spring seat
• Drop in steel boost valve and bushing with EPC relief assembly (bushing, valve, spring, ball, cotter pin)
• Drop-in precision ground solenoid regulator valve, bushing, spring, spacer and retainer.
• (3) TransGo engineered high-temperature stator rings and expanders
• (5) Pressure switch diaphragms
• (5) Pressure switch seals

Converter clutch apply issues?

• Then be sure to get part # 32775K clutch select valve and TCC regulator valve kit, for a long term fix!

TransGo Installation Instructions