Well I have heard the very first strange noise ever in my Burb.... When I am going slow (like through a drive thru or parking) but only when turning left, I hear a strange clunking sound in what sounds like the front drive axle. But I cannot be sure because I have been alone both times and it is tough to recreate the sound with my sm465 by myself! It has done it twice, once I think the hubs were in the locked position because the snow was falling and then again yesterday (about 2 weeks after the first time) when the hubs had just been unlocked. When you are turning left going slow the truck kinda hops and clunks at the same time! It seemed to do it right after some slippage on ice. The rear wheels slipped a little and then it started. I do have posi rear end. What could this be? Thanks in advance and if I need to get more info, please ask.