I recently bought this caddy and I have a message that states:
service-electrical system
So this is a vague statement as we all know the Caddy has a lot of wiring, has anyone had this message before?

I also have no blower fan or interior lights when any door is open, yet when I operate the headlight switch to the right all the lights work fine...I am thinking that the interior light power is ran through the drivers side door latch but then why does the lights not work with any door open?...my wiring experience is telling me that maybe the body control module is not working which could explain the blower fan, interior lights and the service electrical system cuz if the BCM is not responding to the ECM that could explain the dash warning.

Anyone got any clues?