Hokiefan

Got in my '17 Silverado this morning and turned the key and nothing happened. Zilch. Did this several times. It finally started and then the Service 4WD, Service Stabilitrak, Service Trailer Brakes, and Steering Assist is Reduced messages popped up. The tachometer and oil pressure gauges were not working as well. I turned the truck off and after about 15 minutes I started it again and everything was fine. I just got the truck back two weeks ago from the dealer after having the main wiring harness/module replaced. Waiting for the dealer to call me back.
Any ideas? Thanks in advance.