Lost 3rd and 4th Gear after hitting the floor with my size 12

[BigO]

Well My Foot is way to heavy and I let rest on the pedal for a little pegged around 5 and 6k then stayed at 6k so i let off and then they were gone 3rd and 4th are no more 1st and 2nd are still a monster but just slips when it get to 3rd. No codes, not clean but not dirty fluid, can it be solenoids or
should i start looking for another rebuilt transmission and if so from who.

[keniff]

i wanted to say your tranny was on its way out in your servo question but i didnt want to Jinx you man....sorry to hear that it let go. honestly if your looking to just get up and running swap in a low mileage tranny. if your looking to upgrade to fix the problem...i say a Performabuilt Level 2 imo its about 1900 without a converter but itll handle 700rwhp.

anyways, i dont see why you flushed your tranny and waited so long to change fluid and filter. tranny fluid acts as a cleaner, if you change it at 50k change it again at 53k (no rough driving) then change it again at 100k then 103k and so on. but if your the type to change fluids and you drive your truck a little on the wild side i say change it at 25k and add 2 more magnets to the pan. ive had my truck for almost 2 years and ive had a 6.2 in my truck since May and its been 13.0 @ 104.2 its stock, all it has is a Billet servo set up and a 3600 converter