I was driving in snowy conditions yesterday and decided to put our 2009 Pathfinder in 4 wheel Hi.
As I was driving I would hear a clunk/bang every several miles with maybe a subtle jerk. It was like something was pounded the bottom of the vehicle.
It would only happen every once and a while, but ran quiet and no issues.
I put it in 2 wheel that last 1 1/2 hr of the trip and never heard the sound but it happened about 6 times the first couple hours of the trip.
Any ideas?