2016 Tahoe, gauges go dead while driving.

[DCS3]

My 2016 Tahoe LTZ has a 145k for mileage. I was driving down the road and the cluster gauges would go in and out. I unhooked the battery to reset and it did. A few days later the cluster gauges all went out and every service notice, and warning light was on. The radio was not affected, blinkers and shifting worked, but would not show on the dash. The car drove fine, no issue with power. When I got home and pushed button to shut off, it would not. I held the button for it to stop. Unhooked the battery again and it reset. Brought the car in to check battery, alternator, starter and ground wires and all were fine. Dealership didn’t seem interested in finding the problem and wanted me to trade in. I believe could be the cluster with my research, but the dealer doesn’t think so. Any help would be appreciated.