2021 Silverado 1500 RST 4WD Duramax at 45,500k. The Nitrogen Oxide sensor took it to the dealer; they need to replace the turbocharger. I also had problems with the push-button starter not wanting to crank over; it made noises as if it were trying to start, but I couldn't stop it. It had to stop on its own, lasted for a minute, felt like longer than, tried pushing the button again, and it would start.
I feel like I'm going to have issues down the road?