Hey guys, I have a 2006 6.0 auto F-350, this morning went out to plow some snow and the 4x4 is not working. Last year i replaced the ball joints and all the seals on the front axles. 4x4 was working a week ago. Today i went out to plow, switched (esof) into 4x4 hi and i get nothing. No 4x4 hi...