auto trans issue, 01 7.3 2wd
I am a 1st time user of this site, so bare with me please. I bought this truck a few mo ago from orig owner. 115K miles very nice condition. today, after going to carwash, I pulled out onto the highway and it shifted fine into 2nd but when it got to 3rd, it felt like the emergency brake came on. I slowed down & it banged back into 2nd. I pulled over, checked trans fluid, (fine) and same process repeated. I drove it a couple miles in 2nd and parked it. Any ideas as to what I am facing?