General Motors review: 2019 Chevy Equinox LT Diesel

I bought this vehicle in March of this year (2023)from Carmax. I love the car but since I have had it is starting to be a issue. Been in the shop 4 times already thank God for warranty. Have had all the sensors replaced and now poor DEF quality message has start popping up. First time it came on and went off second time I had the 2nd nox sensor replaced (first one was already replaced. Two weeks later message came back on the next day message went off. Came back on today it has been kind of cold but drove car about 2 hours so it can completely warm message still hasn't went off. No codes are popping up..I have been in plenty of forums from around the world and not even GM can fix the problem. Also noticed all the forums GM never responds to this situation but the do respond to all the other ones..GM owes every diesel owner an explanation and you need to make the ones that still have them whole by recalling and fixing the problem. Is that also one of the reason you stop making that diesel model? Instead you don't address the issue and just leave them in population.