October 28, 2014

How to Rebuild TEHCM Pressure Switches in GM 6L45/50/80/90 & Gen. 1 6T70/75 Transmissions

Presented by Sonnax

GM 6-speed transmissions often set various trouble codes caused by fluid pressure switch failure. Replacement of the expensive TEHCM in which the switches live was traditionally the only way to restore normal shift operation, but now there’s a better alternative: rebuilding the switches.

Sonnax's patented rebuild kits for GM 6L45, 6L50, 6L80, 6L90 and Gen. 1 6T70, 6T75 transmissions contain exactly the right tools and parts for fast, safe installation of new pressure switch laminate discs and seals. There’s no coaxing, no practice, just successful switch rebuilds the first time, every time.

Watch the video to learn how this simple, affordable technique will save you hundreds of dollars and keep the TEHCM out of the boneyard. Available products include:


Related Units

Related Parts

While Sonnax makes every effort to ensure the accuracy of technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time.