124740-TL30 Pressure Switch Installation Tool Kit Works with F/124740-30K, Perfectly Fits for GM Transmissions 6L45 6L50 6L80 6L90 & 1st Gen 6T70 6T75

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This repair kit is hard to install, and would be nice if it had a few more round disks to make up for the ones you will destroy while trying to figure out how to use it. But one you figure it out, while still not easy, how do you argue with a successful repair? After all, if it was easy, it wouldn't be a gm product needing the fix. It solved the problem.... now onto the other never ending list of breaking stuff on this car!

Installation went very well on my 2011 Chevy Traverse. The instructions in the listing answered most of my questions. If you can make it to the TCM, you can do this job. Make sure you have a good set of picks — other than that, the tools provided work great. All the seals seated fine using the installation plunger system, and the disks went in fairly easily with the foot. Make sure you work the foot 360°, sometimes the disk wants to catch and “fold,” but a little patience and they sit flat. This fixed the shudder when shifting under load. You can see the disk that was causing problems in my TCM in the images provided.

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Removed the shifting issues my friend was having with his truck after getting a code for pressure issues in the valve body.

The installation kit is great, the quality of the sensor covers feels better than stock, and the rubber seals feel better than stock. I installed these in July of 2024. The vehicle ran great, had perfect pressure to each sensor, and didn't even hiccup until recently. In October of 2025, the 2nd switch failed again. Caused the vehicle to go into limp mode on the highway, so will have to replace these again when I can. That doesn't mean they wont last on different vehicles, more than likely just an issue with the first gen of the Buick Enclave transmissions unfortunately.