Taziscool

Got some help here with the whole stuck in park 06 2500 ctd auto. Replaced the detent ball with goerend bullet and spring. Now for the problem. Put it all back together and now only have 1 forward gear up to 15 mph (felt like first) then it goes into neutral. Hooked up the bully dog and first got p1762. Cleared the code and restarted. Now I get p1757 and seams like its starting in 3rd( no power). How the heck can the solenoids go bad while fixing the unrelated issue? it was shifting just fine before it got stuck in park.