jwr0ng626

So during the warmer Cali weather, I haven't been experiencing the squeaks/creeks too much, but now that its becoming cooler with dew in the morning and night, or even after washing my car... the rear develops an annoying creek over bumps and pulling into driveways.

I've already greased the swaybar bushings but that didn't help
it has coilovers that are only a couple months old so that can't be it
could it be the diff collars?
any ideas, postulation, hypothesis or theories will be appreciated

Heres a vid with it present at 0:06, 0:10, 0:32, 0:50