Listed GM 6-speed 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 slipping, flares, harsh application, and bind-ups. 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. Since switches cannot be obtained through OE channels, replacement of the TEHCM was the only previous remedy available.
It is no longer necessary to replace the expensive TEHCM assembly to rectify this concern. Installing Sonnax pressure switch rebuild kit 124740-70K restores normal switch operation, eliminating codes and providing renewed shift performance in all ranges.

Allows salvage of expensive TEHCM
Kit includes enough discs and seals to rebuild 10 TEHCM units

More From This Category

Sonnax Shim, Chrysler 10-3/4in. Lu (Late), Each

Sonnax Shim, Chrysler 10-3/4in. Lu (Late), Each

$1.45

Sonnax 298mm Performance Converter Mounting Ring Kit, GM, 4L60/E, 200-4R, 700-R4, 298mm, Each

Sonnax 298mm Performance Converter Mounting Ring Kit, GM, 4L60/E, 200-4R, 700-R4, 298mm, Each

$472.15

Sonnax Accumulator Piston Kit, Chrysler, 845Re, ZF6, ZF8, 6R, 6F35, Cft30, Each

Sonnax Accumulator Piston Kit, Chrysler, 845Re, ZF6, ZF8, 6R, 6F35, Cft30, Each

$108.18

Sonnax Friction Ring, Ford, 9.500in. X 8.250in. X 0.45", Hte Material, Each

Sonnax Friction Ring, Ford, 9.500in. X 8.250in. X 0.45", Hte Material, Each

$32.42

Sonnax Thrust Washer, GM 4L80-E (Dual & Sgl Stator), Each

Sonnax Thrust Washer, GM 4L80-E (Dual & Sgl Stator), Each

$9.79

Sonnax Thrust Bearing, Aw Tf-81Sc, Af21, Tf-80Sc, Each

Sonnax Thrust Bearing, Aw Tf-81Sc, Af21, Tf-80Sc, Each

$62.42