Yesterday, we went to a long-time friend's daughter's wedding, wife was the coordinator for the wedding and I was running sound. On the way home last night, early this morning, rolled over the 40K mark, right as I was passing the North Gate to Edwards AFB.
I can honestly say that I did not have a blank screen issue, but I did have it lockup with the radio screen on. And like yours, only the steering wheel controls worked for it, didn't even flip to the camera in R. After a mile or two, and getting fed up with it, I threw the transmission in N, shutoff the truck, restarted it, and everything was normal. Haven't had a problem since. Hopefully, it's just a "one-time glitch," like mine was.