hey guys, i used to have the problem. now here's one thing to consider, when u go and have ur driveshaft replaced, hook up with the most experienced mechanic at ur dealer. 2nd, tell that mechanic to be sure that he has greased up the driveshaft. cuz with mine, the first time, a newbie did it and the thump was only 80% gone. then the new mechanic knew what to do, even solved the new vibration that was caused by the fixing of that newbie! :chairshot: