My 2019 Silverado infotainment system sometimes has a blank screen when I first start my truck. Sometimes it will also act as if everything is ok but the touch screen will not respond and the manual buttons will not respond, so whatever station and volume was on the day before is what you are stuck with. sometimes I can turn the truck off and wait a few minutes and it will work. Then there are times that I stuck with either a blank screen or yesterdays station. I took it to the dealer and of course they could not find anything wrong. Do anyone else have this problem and can it be fixed? HELP!