I have a 2014 F-550 with 56,000 mile on it. It’s throwing a blue wrench light. It will not shift through the gears. If I put it in manual Shift it will. The transmission Shop said it was the tranny. So I had them go threw it. After that it was doing the same thing. Coming up to a stop them gassing it it will throw a blue wrench light on and won’t shift threw the gears. Only does it some times. Most of the time it happens when u come to a stop and take off again. Had it back at transmission shop three time they could not find a problem with the tranny. They said the last code they got was brake pressure high code. Part store could not get a code to read. Can any one help.