Wanted to see if anybody else is having this issue..I have a 2004 xlt and have a pronounced shuddering and chattering noise coming from my rear limited slip differential. took it in and was told by the tech that this is a known problem and Ford issued a Service pack for a replacement clutch pack for the diff...but if it is installed I would lose my limited slip capabilities.. contacted Ford and they told me "Live with it or with-out it, my choice"
Has anyone else had this issue... I am about to take it back in and have them replace the entire diff..