trouble shifting outta 1st into 2nd?
 

Just bought a 2001 2500,with 150,000 miles on it. The dealer tried to adjust the first band cause it was not shifting from first to 2nd with out letting off on the throttle and easing into it real easy it will finally catch 2nd hits 3rd on od just fine. i tried to adjust the 1st band again cause the dealer didnt do it right,now i cant get it into park? any help would be greatly appreciated! also put it on the code reader and its throwing a p0122 code says its something to do with my throttle sensor,says its getting low voltage.

sounds like you got it too tight, redo the band adjustment then you are going to need a new TPS sensor....3 things the pcm needs to make the 47RE shift.....TPS, CPS, VSS without all of those it will not shift correctly

I dropped it off at a transmission shop reffered to me by a friend.I wanna beef up the tranny,dont wanna use stockparts whats everybody's recomendation on a rebuild? do i tell the builder to buy a crate tranny or are there rebuild parts out there i can rebuild with? First time dodge 5.9 ownwer.dont have a clue which way to go?ould appreciate any and all info!