GM 6L45/50/80/90 and first generation 6T70/75 transmissions often exhibit various trouble codes, TCC apply problems and shift irregularities related to the transmission electro-hydraulic control module (TEHCM). Previously, the only solution was to replace the entire TEHCM.
Sonnax to the rescue! Now, you can salvage the TEHCM while effectively restoring normal switch operation, eliminating codes and providing renewed shift performance in all ranges with the innovative Sonnax pressure switch rebuild master pack, installation tool kit or rebuild kit. Correct installation is quick and easy to achieve with the new, Sonnax patent pending tools!