You don't say what shocks you have but rear squeeks can be from several places. One is the rear outer carrier as Cliff said, another can be the shock bushing themselves if you have Fox shocks, they are dry from the factory. Look up the Fox Podium Maintenance thread for the various fixes. And last, but not least is the sway bar mount. It has zerk fittings on each end, but people have noted that even if greased, the grease doesn't penetrate all the way around and will squeek like crazy. I can't say I've had this problem, because the sway bar was the first thing to go in the trash on my S.