Hi I have a Dodge 2500 4x4 cummins and it wont shift when the engine warms up without "help" What the heck is the problem? I am told if it was the clutches it would just slip....well it just wants to stay IN gear when its warm

ANY IDEAS? Please help!
Please email the answer if you can and leave a post for any others who may have the same problem thanx

 

by no means a tranny expert but could it be one of the pressure sensors is bad and failing when warm?