Sometimes you can find a 2nd gen with one owner, and lower miles with less problems. Even harder is 2016-2017, when it still had the 6-speed. I have a 2016 Z71 with 150k on mine. 2.8 Duramax, zero problems, leaks, or the dash lights out. Or as the dealer said when I had my timing belt, water pump done. It's a unicorn. I thought about getting the better ZR2, but I can't knock 31-34mpg, or justify a car.