What driveshaft did you use? Did it correct your issue?

 

Just used a standard style OEM. It sure is smooth. The old one had 88k on it so I'm guessing GM original sticky note on it.

With all the stuff being looked at it is peace of mind to know that the items address are not the culprits. But until it gets down to 40's-50's again I'll be in a wait and see situation. I've got to take a look at motor mounts.

 

So, had a chance to check the sway bar links and the sway bar mounting point bushings. They are o.k.... Greased up the rear links and they're good to go. These are aftermarket ones installed a few years ago.

 

Since it has been chilly and damp this last few 24's the noise thankfully has been absent.