6L80E 6L90E 6T75 Pressure Switch Rebuild Kit Sonnax Number 124740-70K. The kit comes with 40 seals and 40 discs.
How to Salvage the Expensive TEHCM
|GM 6L45 / 6L50 / 6L80 / 6L90 and Generation 1 6T70 / 6T75 transmissions often set various trouble codes related to failures of fluid pressure switches that are internal to the transmission electro-hydraulic control module (TEHCM). These codes may be accompanied by TCC apply problems or shift irregularities such as:
· Harsh application
As time goes by, the laminated portions of the pressure switches can breach, preventing normal switch operation. If more than one switch breaks down, failsafe mode can be triggered.
Instead of replacing the entire TEHCM assembly, builders can make affordable repairs with Sonnax discs and seals. The patented tool kit makes installation fast and easy.
The result: normal switch operation, elimination of codes and renewed shift performance in all ranges. (Replacement pistons also are available if needed.)