I just sold my 2013 Yukon Denali Hybrid with 211,500 miles on it for $16,000. Sold fast. It was in excellent running condition still, and looked new inside and out. This was easily the best car I ever owned, and wish GM still made this Hybrid. I replaced it with a 2021 Yukon AT4.
Brakes on the Hybrid didn't need replacing, but I did so at 180,000 miles just because. Hybrid battery was replaced at 115K miles. Replaced all suspension items due to wear. Despite the high mileage it didn't consume oil in any noticeable amount, and the transmission continued to be rock solid despite pulling a bass boat to tournaments all over the west coast.
I understand the timing chain could be a problem in the 2010? and earlier models, but didn't have that problem with my 2013.
My dash finally cracked at 210,000 miles (I used a sun shade religiously to prevent cracking) which was another reason I sold mine. Gas mileage was fantastic with a 6L engine; really miss that with my AT4. The Hybrid wheels were ok in the city, but not so good in the snow and mud. This was a big reason for getting a new AT4.
Hope this helps.