it gets stuck in 2nd gear when towing and will not up shift no matter where i put the pedal, it mostly happens when i start a hill climb at low speed,the tranny overheats (i,ve pegged it) also it does,nt matter if the lock up is on or not i can go up a hill loaded at 65 mph as long asi dont drop below 45 mph if i do it drop into 2nd and will not go to 3rd i am sure i will need a rebuilt after market tranny soon and also like to know where to get one for a good deal thanks for the help in advane