i was messing around and got really stuck today (had to get a wrecker out to pull me out)

after that the trans acted funny
then i got a p0731 (gear 1 incorrect ratio)

so i returned it to stock and it was driving fine then put the custom tune back on and it was working great no issues

(tried putting it back to stock and didnt work)

about 10 miles of driving and backing into my driveway twice it stopped working 100%

it slowly moves backwards but i have to rev it alot around 3000rpm

forward gears still work fine (not 100% on OD) but i didnt notice anything out of the ordinary



so do you guys think this is solenoid or the semi common sun shell



its an 04 5.4 4x4
please help me

 

Whatever caused the original problem that destroyed the reverse clutch.