So, the van sat for 2 days before I had a chance to work on it again today. And when I fired it up everything is working. To me that says I can rule out fuses or something like a broken wire. Probably can rule out relays, too.

This might have been the equivalent of the earlier suggestion to to turn the key on with the battery disconnected to remove residual voltage, but not sure.

I think a bad ground is still a possibility so I'm going to pull the relay/fuse box under the hood and check all the grounds and cables that I can see. But it could still be the BCM is bad and it temporarily "healed" itself. Time to get out the wrenches and go exploring.

Thanks for all the advice from everyone!