Thanks all for sharing. I just had this happen to my 2014 GMC Sierra 1500 65kmiles. It happened 3x in the last month. The biggest problem is the truck just dies while driving. There is no warning , accept a slight failure in the power steering then nothing , rolling along at whatever the speed limit is with no power steering etc. A bit dangerous. At least the wheel doesn't lock up. The truck starts right back up. Some electrical components are reset such as clock. The dash states that 2 keys have been paired, and then the action required window up and down message.
Looks like the issue could be anything from reading this thread and elsewhere. I take it to the shop next week.