So the other day I was driving along in 2wd high, and all of a sudden the rear end locks up, it brought me right to a stop. I don't know what happened but now the only time I can drive it is in super low. In high and low its as if it doesn't have any gears but I have all 5 and reverse in super low. When I put it in high and shift into gear and it struggles and bogs out can anyone help me? the motor is still good and strong and the rearends not locked. im thinking it may be the transfer case if they have one? any help would be great!