So I have a question for you guys, I recently did a swap of my 2.5l to the 4.0. I kept the automatic in it. I cannot get the truck to go into gear and actually move. I replaced trans cooler lines. I made sure trans was full of fluid. Ran truck and checked fluid. Fluid level is fine. Checked shift linkage like I was reading and found nothing. I got to thinking, maybe there is air in the system that needs bled out. Anyone ever run into this issue? It don’t really stay in park very well either