Echoing what Orchid posted- I never purchased an extended warranty on any vehicle I purchased, (new or otherwise)- But all of those lacked the sophisticated electronics the 2015 Yukon XL I bought new in 2015. I used the same salesman I'd used for the last 3 trucks I purchased over 28 years, and when it came time for the option during the sale, he said "look, all of the other trucks you've own had none of this electrical, from the advanced radio systems, computer controlled everything, cameras, etc, the standard "drive-train" warranty was no longer really sufficient. I negotiated a discounted extended warranty (8 years or 120 k miles) which covers EVERYTHING. The odds of mechanical issues are slim, I put around 2500-3000 miles a year on the truck, but the propensity for electronic issues was worth the investment. For the next 6 years, no matter what, my warranty will cover any and all issues. As mentioned, it's insurance, and paying for something we never use is always a bit of bite, but when it comes to needing, it's nice to have it. 2 K for 5 years worth of piece of mind isn't too bad. Consider in 4 years what could go wrong, and think about a simple wire buried deep inside the dash, for something as simple as the parking sensor, the labor alone could be over 2 K, but, if you're comfortable performing the work yourself, may not be worth it. I was at one time able to repair anything on my cars (my last being a 93 Crew Cab C3500, which I highly modified/customized and drove for 22 years), but the technology has changed so much, I have no idea where to go/what to look for on the Yukon- The investment is certainly worth a lively debate with friends, family and chat boards-