I was pulling a trailer threw kinda plowed moist ground when I started to get stuck. I put in in 4 high and it bogged my engine down wouldn't spin the tires. I un hook from trailer, give it hell and one side of my truck sinks in the front the other wheel was not spinning. I put it in 4 low lock in the transfer case and gas it, wheels don't spin. rocked it a little and hammered down again and the back wheels went crazy front wheels just stopped working all together... any ideas on what I messed up? the 4x4 will work a little bit it catches and if I have too much strain on it it will just slip and make a grinding noise and the wheels wont move.