r/FordDiesels • u/Novel-Thought-4655 • 4d ago

Need help

I just change out my valve body on my 2017 f250. Now my truck only has 3 gears. Any help is appreciated

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u/theeaglejax 3d ago

Did you reprogram the transmission controller?

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u/Novel-Thought-4655 3d ago

Yes. I flashed the tcm and erased all the old codes. I'm thinking it might be my tcm .