I would like to piggyback on this thread because I had a similar question and don't think there's a need start a new topic about it.
I have a 2019 Tahoe with 36K miles, no mechanical problems so far. I've been considering upgrading to a 2023 and going with a fully-loaded High County trim (current 2019 is an LT). This isn't a need situation, I just want more options, like ventilated seats and the 6.2L motor, and the newer 10-speed transmission and IRS sounds nice. It's easy to find discussions on both generations about issues, like transmission issues with the 15-19s, lifter issues with 21s and some 22s, and seemingly more 'electrical gremlins' with the 21+ generation.
Would it be a mistake to trade in a perfectly working 2019 for a 2023? Are the newer rigs actually more reliable than the prior generation despite the issues I see posted here? I would like a newer Tahoe, but all the talk about lifter issues, the 6.2s spinning bearings and/or locking up, and the electrical gremlin talk is concerning.