Valve Body back ordered

My 2023 2500 Silverado Diesel is sitting on a rack at my Chevy dealer for who knows how long due to a shift valve body that they can't tell me when they will ever see one. I'm outraged with GM! I see this is an ongoing issue by this and other blogs that they have no remedy in site. I paid over 80K for this truck expecting a reliable vehicle for the next few years. I switched from Ram to Chevy after years of buying new Rams every 3 years for my business. This is unacceptable for any car maker, whether its 20K or 80K. This convinced me that I need to go back to Ram. Chevy is not what it used to be. GM does NOT stand behind there product! If your thinking about a new GM product I would strongly advise you to read the blogs regarding all of the problems their having getting parts. Stay away from GM