I live in rockford MI, we got about 10 in of snow and its still going. so i put the jeep in 4x4h mode and it feel like something in the transfer case is slipping. when it slips theres a loud bang and it feels like something hit the car as it makes the whole car shake. i know this prolly isnt a great explanation but i have no knowledge about jeeps this is my first one. can anyone tell me whats wrong with my car?