i already asked basically the same question but thought i would rephrase the question. i can drive normal in 2 wheel drive but when i put it in 4x4 it feels like its binding and my wheels act like they wont move and i can only go 1 mile per hour. i have to push the gas to go and its jerky. no noise or clunking sounds and soon as i take it out of four wheel, its normal again. any clues to what it could be. i know its suppose to feel different in 4x4 but i should be able to drive normal going straight on wet pavement. its a 1986 suburban