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 Impeller Hub, Chrysler, Chrysler 45RFE/545RFE/66RFE, Each

Sonnax Impeller Hub, Chrysler, Chrysler 45RFE/545RFE/66RFE, Each

$70.42

Sonnax Vacuum Test Plate Kit Seal, GM, 4L80E, 4L85E, Each

Sonnax Vacuum Test Plate Kit Seal, GM, 4L80E, 4L85E, Each

$213.70

Sonnax Friction Ring, Allison, 12.340in. X 10.250in. X .066", Hts Material, Each

Sonnax Friction Ring, Allison, 12.340in. X 10.250in. X .066", Hts Material, Each

$30.41

Sonnax Solenoid Stabilization Retainer, Ford, 10R60/80/90/140, 10L60/80/90

Sonnax Solenoid Stabilization Retainer, Ford, 10R60/80/90/140, 10L60/80/90

$13.57

Sonnax Tool Kit, Aisin Seiki, AS69RC, Each

Sonnax Tool Kit, Aisin Seiki, AS69RC, Each

$1,074.18

Sonnax Accordion Spring, C3/C4/C6/AOD/Axod/E4Od/4R100

Sonnax Accordion Spring, C3/C4/C6/AOD/Axod/E4Od/4R100

$124.46