Just installed tranny...no motion!!!! Heeeelp
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He fellas, I just installed my 4l80e in my truck...now i know theres a sectoin specifically for this but i figured i give you guys a shot too. I just got the tranny from FLT so it hasn't been open by me!! I can put it into gear but it doesn't do anything!! What gives??? Oh and I have a SES code P1810 Transmission Fluid Pressure Position Switch Circuit...could this have anything to do with it??
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Worst case scenario is you didn't install the converter properly and possibly crushed the pump when you bolted it up. You need to check if the pump is pushing fluid by disconnecting the trans line from the radiator with the engine idling.