05 trailblazer front diff
 

I have a question, 05 trailblazer. I had a clicking noise up front when I backed up or we bent forward for a brief moment. I been a mechanic 30 yrs. So I replaced axle shaft wheel bearing ball joints etc. Everything in the driverside front I even went as far to get another axle but still same thing. I wondering if it's in the differential. It doesnt make the noise any other time but when I turn the steering wheel fast in a direction I can hear it like its pulling on the wheel. Idk it's a weird problem. I have replaced everything on that side possible. Its sounds like the splines on the shaft are rubbing something when I cut the wheel to the left. I'm out of ideas other that the differential. Anyone ever hear of this ?