I have been thinking on this for months, just listening and trying different things. When you hear the noise you can feel a vibration. Put into 4wd the noise goes away(for the most part). The noise doesn't always happen. Hmmmmmmm. I replaced the ball joints in my Blazer, the noise is some what worse. The noise now changes pitch during suspension travel(some one had posted that theirs did that). I believe that the noise is a CV Joint on the right side, probably the inner. My noise doesn't change with steering input. Not sure when I will replace the axle shaft/cv joints. If some body wants to give it a shot on their ride, Let us all know how it turns out.