Last Wednesday I started to notice my truck was flaring on the 1-2 shift. It wasn't terrible but I did notice it had a different feel to it. I only drove the truck to hockey (10 miles each way) and then to work Thursday morning(3 miles) all easy driving and never more than 40-50% throttle if I had to guess. Thursday afternoon I jumped in the truck and headed out from work. Within half a mile I noticed the trans was flaring and then clunking every shift and then it limped into 3rd gear. I pulled over, checked the fluid(proper level and didn't smell burnt) and then cleared the P0700 code I had. Pulled out of the parking lot and the same thing happened. Shifted terrible 1st through third and then never found fourth gear. Causing it to limp into 3rd. While in third I can roll into the throttle and feel no slip and I can still manually lock the converter. I am sort of at a loss because it seems like it failed very quickly and I hadn't been abusing it. I am going to try and change the spin on filter tonight and see if it helps. Any insight on what this might be?? I'm really hoping I didn't fry the tranny.