Thread: 03 GTP, Up Shifting and TC Locking Up Early. And Occasionally Downshifting Hard…

My 03 GTP on normal slow acceleration up shifts early and the TC locks up early as well. On hard or mild acceleration it shifts fine.
And occasionally when I roll to a stop from high gear it bangs in to gear when I go to accelerate. Almost as if it's staying in high gear until I hit the gas, than slams into 1st.
I changed the fluid about a week ago and it seemed to help it a little but nothing major.
Anyone have any ideas?

Anyone want to take a stab??? Tranny was acting extra funky today