My transmission has been giving me fits for almost a year now. When it is warm my truck is near undrivable, It acts like it falls into neutral all the time, even with the mystery switch on. It only does this when it is warm (above 63 DEG outside temp) When it is colder than this it drives normal? Im thinking either the pump is going or it is sucking air from somewhere. But this problem is seriously angering me. Any insite.