Strange grinding noise

[JSchuricht]

On mine, I just rotated the down pipe. If you think somethings loose, you just need to crawl underneath and start looking and listening.

[drguitarum2005]

For me it was just that clamp at the bottom of the downpipe (about halfway down the firwall next to the tranny bell housing). I felt it and it just free spun around the pipe. Broke it getting it off but once I got it off, grinding noise stopped.

[elm302]

same noise but when i start to hear it if i put it in four wheel drive it instantly goes away is this my hub assembly also my axle shaft by the yoke has alot of paly on both sides