I sent my RCM to D.J. for repair. Less than a week later I got it back. Not a bad turnaround from North Carolina to Arizona and back. He said he replaced the air pump and traction control (ABS) relays.
I hope I don't jinx myself, but it seems to have fixed my problem. I've test driven the car for about 15 miles and gone thru three or four stop/start cycles. I have no warning lights on the dash, spoiler works again as it should and the speedometer & odometer are working. Hope it stays that way.
Thanks again D.J.