shifting problems


New Member
I have a 97 MD3060 ALLISON thats giving me problems. When trying to go forward in drive the shifter reading goes from 1st to 2nd without moving and then jerks a little. After working with it I can eventually get it to move but it isnt pretty. I have a couple codes; d1 33 12; OL 70; OL 95. I can clear the OL 95 after cleaning the connections on the temp sensor located on trans cooler out line but the rest wont clear. (there is a sensor on the trans line coming out of trans, but dont know if there is one inside the trans) This trans is in a 98 Monaco Dynasty RV. The fluid looks and smells good. Fluid level is fine. Also, sometimes, it doesnt want to move in reverse, but not always. HELP