I had the same issues on my 2020 silverado wt. 2300 miles are on it. I drove to my son's school dropped him off and then the truck would not start. Tired starting it a few times and i didnt work. Called a tow truck. The tow truck came out about a hour later and it started for him first try. But I had a check engine light on. Dealer is looking into it now I will post what they find.