^
It depends on the method of construction of your frame, but here's a fix I've used on a couple bikes with carbon rears. If the carbon stays have AL plugs that are bolted into (or near the rest of the frame at) the dropouts, unscrew those bolts and coat liberally with a light lube such as Tri Flow, Shimano Slippery Spit, etc. Reinstall and marvel at how quiet your ride is (or curse the time you wasted listening to some guy's advice from the internet).