Please only post your problem once. We can move it if you think it's the wrong place for it.
This noise that shuts up with 4WD on has to be a transfer case problem unknown to me and no doubt the sooner you fix that the le$$ it will cost as it doesn't sound good,
T
Tom Greenleaf - MetroWest Boston - USA
http://www.acsource.com/ _________________________________________
http://www.autoacsystems.com/tomgreenleaf/