My 16 has 62,000 on it. Purchased at 21,000. I do love the way the truck drives and tows. It looks good and is very quiet on the inside. Informant is good and the radio sounds nice (especially like carplay). I just serviced the transfer case and the fluid looked like old motor oil. Next up is transmission/axles/coolant. The 5.3 gets great MPG and I love the low end torque of the DI high compression engines.
Problems so far:
-Engine tick (fixed by sealing up the boot for the steering column)
-Bad battery at around 25,000
-Display screen going blank (Fixed with 2 software updates)
-Various annoying interior rattles all fixed by me
-Motor mounts for rough idle
-Going on the 3rd soft tailgate lowering bushing (nothing ever heavy on the tailgate)
-Heater is awful. Can drive 15 miles with it blasting on high/full fan and still not "Hot".
-Shakes from 70-80 mph that I can't get to go away (was smooth as glass when I purchased it)
-Clunks while down shifting (normal symptoms)
-Rotors warped by 40,000
-Noisy steering angle sensor
-Literally cannot get wiper blades to work on it. They shake skip etc. I have stripped the windshield bare and waxed it, rain ex, silicon lube etc. Adjusted blade angle tried all different brands. I think they got the spring pressure too heavy because it seems to mash down the middle of both of the blades while the ends of the blades shake and skip along. I did squeeze the ends of the arms (fitting where the blade clicks in) tighter which took up lots of play and that did help but I am still extremely unimpressed with the wiper performance. I can't remember any car I have ever owned with fresh blades that I said hmm these suck.