Cadillac STS Forum - 2005 through 2012 Discussion, Rear differential leak again in Past Cadillac Vehicle Discussion; I just spoke with a Cadillac Service Rep this afternoon regarding the differential leak.
He said that it's the pinion ...
I just spoke with a Cadillac Service Rep this afternoon regarding the differential leak.
He said that it's the pinion seal & that it's a common problem w/CTS, SRX & STS models.
Will have mine checked out when I bring it in next time.
Have been less than impressed with this issue, car drives great, but sad that two weeks after having seals replaced in diff, it is leaking again. Cadillac sits next to my 1992 Mustang GT in my garage and only the floor under the Cadillac has oil stains. The Ford with 100,000 miles has been bone dry and the $56,000 Cadi leaks oil. Pitiful.
What do you want for $50 or $60k? You should have bought a real Cadillac, a Fleecewood Brougham.
Sorry about the rear end problems. I just bought a CTS, and I need to climb underneath it to look for such problems.
2006 STS V6
I had the differential leaks repaired two times, and then they replaced the differential. It leaked once more and they replaced a “gasket.” I’ve got 15,000 miles and it hasn’t leaked in the past 8,000 miles.
Mine started leaking with 1000 miles and got the dealer to replace pinion seals and blowhole seal. My ctsv leaked also but not near as much. Its irritateing but thats about all. Had a leak spot on my garage floor already anyway.
For the past 4 months, no leaks, thought was all fixed after dealer put in "vent tube" in rear diff. Pulled car out yesterday, and again, oil on floor. Will eventually go back to dealer for 4th time. Guess I get to drive a loaner again... which one shall I choose this time??? Really a sad situation... if I didn't love car so much, would be screaming lemon.
I was going to purchase a used 2005 STS with like 40K miles.. Should I avoid purchasing one? How much money are we talking for a repair if the car is out of warranty? By 40 or 50 thousand miles, do you suspect that the problem should have been fixed?