guyb

I have 99 Tahoe 100k that has developed a virbration in 4 hi or 4 auto when 4wd is needed. I have pulled the Cv joints and they doesn;t seam to be any play the Front Dirve shat ujoints are not dry and seam to be moving freely on both ends. The front diff seams tight fluid was clean no bits.. The x-fer case fluid Blue and clean no play that I can feel.

No vibrations at any other time.

??? Thanks in adavance.

planedude

change your front u-joints anyways they are hard to feel and can be decieving. Had the same problem with mine and that what it was. They're only cheap. Worth a shot.

guyb

U joints fixed the problem!!! Yea