Pins 2 and 4 are getting power. I must be reading the CLP connector wrong, because pin 8 does not have a wire attached and should according to the wiring diagram. Maybe I'm letting myself go down a rabbit hole.
Since the cars are getting older, I've decided to replace the CLP and the BCM. It never hurts to have spares.
I've found a BCM with the identical numbers, except the week and year build date, The hardware and software numbers match.
I'll also pick up a replacement CLP.
I will post results.