crfalzon, you need to read up on the Magnesson Moss act.
For the price of that dealer install you could have it done by a third party two or three times to make up for any issues you'll ever have. The guy who I have had do all my gear work and all the gear work for my friends Jeeps is a stand up guy. Any issue you have bring it in and he will fix it. The only problem is none of us have had any issues so we don't know if that is true or not!! He is that good.
Having your rear gears swapped out isn't considered scheduled maintenance. That is what most maintenance contracts cover.
My $500 estimate includes $250 in labor and $250 in parts. Parts should be cheaper, labor might be a little more. On a new car about the only thing you'll need is a pinion crush sleeve, marking compound and maybe a couple shims. Bearings, races, seals should all be in really good shape. It's about four - five hours of work at $50 an hour = $200 - $250.
alright I get it....my only concern is I want it done right and I want it under warrenty...also I have to check, since I bought the service package they may negate my mant. contract. I can't even get an oil change by a third party..which is fine with me since I paid for it all up front and they have a great reputation etc...but I will get back to him and find out what the deal is regards cost..I am sure the labor cost is astronomical...it always is...