Creeking sound
 

Jacked up the rear to rotate tires,and this creeking sound was comming from the rear. Could this be the rear springs? If so what is the cure?

It is most likely a bad bushing. You will have to carefully look at the bushings for the different rear suspension pieces. It could be the sway-bar links. You need to see if it has any play in it, although I think they usually cause a "pop" noise when hitting bumps.
Thanks
David

I thought it might be the rear coil springs.I will try to isolate this problem. Thanks