So about a month ago, my truck started to have transmission issues. The main symptom are ranger selector is missing, whenever I shift into rev or drive it shifts extremely hard, it’s stuck in limp mode, and the check engine light is on. Whenever I do have it in drive it takes a little bit to actually get the truck going. I know nothing mechanically is wrong with the transmission. I have replaced the NSBU and TCM. And nothing had gotten better. My next step is either the shift linkage or pressure valve ??