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  1. 4L80/85E Transmissions. 6L90 Transmission
    I have a 1994 6.5 1ton with the 4L80. If I put it in reverse or neutral it goes forward, like it is in drive. I still have forward movement in OD, D, 2nd, and 1st. "Park" works as normal I have checked the linkage, all that looks fine. I have also changed the fluid. Is it shot or anyone have any...
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