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GM 8 speed and 10 speed valvebody fixe
Posted to Transmission Forum on 7/31/2025 5 Replies

I had a previous thread about fixing shudder on the 8L90 transmission through fluid service. This has led me down a rabbit hole of finding a trustworthy, permanent solution. I found this company that "claims" that almost all problems with shifting and shudderi... Login to read more.

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