I got a 7 year bumper to bumper with my 2014 when I bought it. I plan on keeping it mechanically stock with the exception of axles, so I may need it down the road. Plus, I didn't pay anything for it, the dealership hooked me up real good!
I called and the first thing they asked was if my tires were bigger than stock size and if had a lift kit. I said yeah and they told me that they couldn't offer me any further warranty and would remove me from their list. Haven't got another piece of mail about it since.