Found a small drop of fluid on the garage floor about a month ago, looked underneath & it appeared the diff had a tiny leak. Took it to the dealership today & they said the axle seals needed to be replaced....parts are ordered.....they said it will be covered by the Lifetime Powertrain Warranty...'07 6 speed with 47,000 miles.

If you have any kind of warranty left I suggest you stick your head under the back end & look for any appearance of wetness on the diff.