My question is what should I buy or what do I need to get my transmission to go in reverse which I think is the reverse servo? And what do I need to do to get my overdrive and lock up back need help ASAP and I’ll take care of this truck I clean all the sensors. And these are the only two problems or three . Help I heard get a Governor pressure Solenoid. Transducer , Y’all help. I know so many things about engines on these Cummins but the 48re I’ve never played with.