Now that I traded in my highly problematic 2011 Sierra 1500 that I had fun bashing in the very long transmission thread, I got a new 2013 Sierra 1500. Of course the dealer was lazy and did not do the Pre Delivery Inspection AGAIN. They confirmed they did not do it. For the last 2-3 weeks, I have been seeing drips on my driveway and garage. I ignored them, thinking they were from the A/C unit condensation. Well, I took a closer look, and it's gear oil. And it's coming out more profusely now. I crawled under the truck, and low and behold the passenger side output shaft seal is leaking like a sieve. My truck had over 100 miles on it when I took delivery of it. Had the dealer bothered to do their damn job, they likely would have spotted this prior to delivery. Instead, they wasted my time AGAIN, and I am going to make an example out of them. Plus, the drivers door trim panel on the inside squeaks like hell. Where is the quality control, GM????