I replaced both batteries in my GMC and now nothing is displayed on my Driver Information Center, Radio, and Climate Control.

The Truck starts and the radio and climate control work. I just cannot see any display.

Is this something I can do or does it require reprogramming at the dealership. What a pain!

I found the problem. It was PATIENCE.

I let the truck run for 5 minutes after backing it out of the garage.

All the displays cam back