Lighten up Rolex.
This sounds like a problem with Cadillac's vaunted solution for which there was no problem - namely the used of multiplexed wiring where one wire would so several things. It wasn't well received by the rrade press, sort of like the digital zoom on a compact digital camera - useless.
What possibly happened was that the controller got it's signals mixed up and sent the wrong commands down the wire - literally
I don't know when they introduced the multiplexed wiring but ocassionaly the driver's seat in my 2000 ElDorado will think it's time for me to take a nap and recline all the way back. But it ONLY does this when i press button 1 (for me) or the exit button. It NEVER happenned while I was driving. Sometimes pressing button 1 again will bring the seatback back up! The trunk lid is simiraly possessed. most of the time it works fine, but sometimes it will ignore the remote's button or the dash button or both. Putting the top up and back down - or down and back up usually "exorcises the demon". sometines just opening the trunk with the key scares the gremlins off too...
But using the key is so proleletarian.
Now why the command module got corrupted - that's the real mystery. Where's Poirot at these days.