GPSilverado

Mine does this occasionally. It isn't something that I can recreate at will, but it is always when the front end is moving, like turning into a drive at an angle where one tire loads before the other, or sometimes when the front end is lifting on take off, or settling on braking. It didn't start this until I had my transmission removed under warranty for repairs, but I have checked all bolts on the cross-member and they are tight. I did lube the stabilizer bar bushings too, and I have lubed the driveshaft splines just in case. It could be the ball joints, or control arm bushings maybe... Hopefully someone will figure this one out.