09 Silverado LTZ Z71 4x4 vibration

[Rdavidson]

I have a high frequency vibration that feels like it’s right under my feet. I can’t feel it from at low speeds and gets worse as I accelerate up to higher speeds. The vibration goes away on right hand turns or right curves on the highway. Just recently replaced wheel bearings, all tie rod ends, and control arms. After all that was fixed my truck was out of alignment and when I was driving straight the vibration was gone but as I made left hand turns that same vibration was back. Yesterday, I had new tires put on and the alignment done. Now the vibration is back to how it was before. Very frustrating would appreciate some ideas on this could be.

[CamGTP]

At this point I'd probably want the truck on a lift so that all four wheels can spin freely, then I'd be watching the drive shafts, cv axles and the feeling the front diff for vibrations and noise.

[Rdavidson]

I have noticed some grease leaking from the passenger cv boot but no clicking noises when turning slowly

[davester]

Check that cv boot very carefully for any cracks or holes in it.  If it does have a crack/hole, you want to either replace the boot (cheaper, but a messy job) or the cv axle (if you do this, you can wait until the cv joint gets noisy), as dirt gets in that hole and starts chewing up the joint.