Squeaking from rear over uneven terrain

[merc123]

There is some nasty squeaking coming from the rear of the car. It's almost like the body is flexing causing it. I've told ford to lube the chassis or whatever else they can do to it but it didn't stop the squeaks. Is it from the swaybar, shocks or what?

 

[CottonBurnerz]

I would guess that it's the rear swaybar.. I reinstalled the rear spring to today on the passenger side to see what caused the squeaking sound (it was a pain...but well worth while)

After inspecting all the parts, I failed to noticed any squeaking sound. So, I decided to go for a drive without the rear sway bar. The noise was gone! So, before anything else.. I would remove the sway bar first.

You can test the shocks by bouncing the trunk.. I did that and there was no squeak..