Quote:
Originally Posted by andrewwynn
Take an audio recording of the left turn pop. There is a different possibility that is distinct to left turns under power especially tight and show turns you want to exclude.
The front drive shaft can come out of the transfer case spline and pop to the next spline. It's a distinct metal "tink tink tink" sound. Not crunchy like CV joint typically is but want to make sure that's not your sound before you reeplaced the wrong part.
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So a little digging around the forums I found
this post of a 06 4.4 with the spline issue. Seems like a quick diagnosis is to unplug the servo motor in the transfer case. Now the transfer case will only send power to the rear wheels. I’ll give that a shot!