I bought my Yukon used w/ about 68k miles on it. That was about 20/25k more miles than I wanted or thought it should have had, but the deal was one of the better ones I had seen and it was in better condition than some of the others I had seen with half as many miles. The previous owners kept it up well. The place that had it was a Chrysler dealer and they offered an extended warranty that was, as most are, only available at purchase. I was planning on just getting the GMPP Major Guard plan after the fact, but I didn't realize that I was well outside of the guidelines to purchase it. The warranty I bought is the Chrysler version of it, called Chrysler Max Guard. Like the GMPP Major Guard, instead of coming with a list of what is covered, it comes with a list of what isn't covered. I've researched the plan and, by most estimates, it is one of the best you can buy, so I'm not asking about the plan per say. I have a few days left to cancel it w/o penalty and I'm debating. It would save me about 2700 dollars over the course of the loan if I canceled it, but one transmission later would have me coming out on top (relatively speaking)... So, speaking from experience, is there enough that goes wrong with these trucks to make sense to keep the warranty? Oh, it's on a 2007 Yukon SLT, about 69.5k miles now. Will be doing some light (say, 15 foot fishing boats) towing and light (8 foot trailers, maybe a uhaul trailer in a year or two) trailers. Unless we move closer to my in-laws, we will probably put about 15~20k miles a year on the truck. The plan is to keep it about 4 years. The warranty is for 3 years, but unlimited millage in those 3 years.