Axle Shaft Seal problems of the 2005 Cadillac STS

Rear differential very wet and leaking in garage. Called gm was ask several questions and told to carry it to crest Cadillac, hoover,al and let them check problem. Was told not to let them fix it and gm would call me to see what I was told. I did carry it to crest Cadillac and was told it is the rear pinion seal and is very common. Gm called me back and ask what they said and ask several question again then told me it is not covered under any recall and would not help with repair.

Daughter driving on concrete hi-way at 50 mph. , hears noise by passenger side rear tire area. Rear end locks as if brakes were applied but were not. Car slides out-of-control . Her and her passengers are not injured. Had to shift car from forward to reverse 2-3 times, car makes clunk noise, then it frees itself she drives out of ditch. Not sure what happened they drive at lower speed cars rear end locks again for 2-3 seconds then frees itself but makes grinding noises. Take to gmac service center told rear differential failed. Found out about recall: NHTSA id # 07v58900. Cadillac rep. Said our cars VIN # is not involved in recall. Found recalled VIN #'s and our cars VIN # is inside the recalled numbers bracket.

The contact owns a 2005 Cadillac Sts. While driving approximately 55 mph he heard a clanking noise outside of the vehicle, and then he loss vehicle control. The driver was able to maneuver the vehicle out of a roadside ditch to resume normal operation. The vehicle was taken to an authorized dealer. The technician stated the failure was related to the rear passenger side differential. However his vehicle identification number was excluded from recall id number 07v589000 (power train:axle assembly;axle shaft;seal). No repairs were made. The failure and current mileages were 162,000. The vehicle identification number was unavailable.