I have a 2019 Sierra 1500 Ultimate. 70,000 km.
I can confirm I had the N192268090 done Dec 2019, and N192268091 done in Jan 2020.
Yet last week I got the same ESC service / engine light / etc warnings on the dash, and it drives different.
At dealership for the day. They are keeping over night. They think it could be mechanical?
I assume Canadian Dealers have the same resources.
I'm glad I have extended warranty, but still concerning since it is a safety issue, I haven't driven much in the past several months. Brakes and Steering going, no wonder fiance is scared to drive.