Bear in mind that when you ask a question like this one on an internet forum, people who have had negative experiences will be drastically overrepresented.
This forum in particular is more of a problem and decision Q&A and less of a brand and model enthusiast group. Half or more of the people who post here seem to be asking about or airing laundry about a specific problem that they think they have.
When I bought mine I asked a couple mechanics I trust locally who see Tahoes in their shops (or don't). Universally I got the thumbs up, and universally they told me that when these things break it doesn't take a PhD to fix them.
I'm n=1 but my 2016 experience has been fine so far. You'll hear a lot about a buffeting issue around here and there are threads devoted to it. I don't hear it and I'm not sure I believe it exists as an actual issue, versus people hearing vibration transmitted through the chassis that should be expected in a body-on-frame truck. But in any case, if it does exist it should be detectable on a test drive.
JD Power gives these trucks
very good marks.