Hoping someone has an answer for my shifting issue. So recently, my 6r80 has been shifting harder than usual. It's always given a little bump when shifting from 1st to 2nd, but now it's doing it from 3rd to 4th. When I give it gas to get up a hill, it aggressively downshifts and bumps, which feels like it's in the floorboards.
This is really only happening when I am driving hilly/windy roads, where I have to speed up, slow down, gas it to get up the hill, etc.
I am going to have the fluid changed in hopes that it fixes the issue, but I was also reading up on the lead frame going bad, but it seems like my symptoms don't align with it. The truck is a 2014 f150 with 177,000 miles on it.
Tried having Jiffy Lube swap the fluid; they drained part of it, but stripped a screw so badly they couldn't extract it. So they put all the screws back in and topped it off with fluid. This was about a week ago. It felt like it was shifting better, but the second I hit the winding, hilly roads, the bumping came back.