Had my '15 since May 2014. Build date April 2014
We've put 37k miles on her. I only have 5 complaints after all this time. My wife/I love SUV's. List is ridiculously long, and I've never seen most of the complaints I keep seeing on here. Glad for it too.
Complaints (in order of annoyance):
1. LS radio. randomly froze and errorred. 2x it completely went dead. required battery unplugged to get reset. did it each time on a long 5+ hour drive. Dealership finally did a system update in April 2017 and it hasn't glitched since. better stay fixed
2. OEM Goodyear tires weathercracked and were unsafe to drive on after 3yrs/35k miles. I replaced with General AT2 LT265/75R18 vice the OEM 265/65R18. Holy hell are these such a better tire. LT rides stiffer, but hey it's a truck
3. AFM/V-4 crap. I pinned the butterfly open years ago. Dealership says vibration/noise is normal and refused to do anything with the AFM. Only thing it's good for is 75+ mph on long haul trips. I did get 22-24 mpg driving across country last year. Plan to tune off with a BBR tune
4. Drivers seat shift/click. fixed that with hose clamps and rubber sheeting years ago. stayed fixed.
5. Vibration at 55-60 mph. I'm not convinced it's the Tahoe though. I didn't notice it in Hawaii, or when driving across country. But everywhere local to me in CT I feel the vibration. Old tires and current brand new ones. Plan on a road trip in the spring to Texas, will see if it occurs on way there