[junkpicker]

what is a bcm and where is it ? is it different than a ecm? i want to change it to see if i can get my fuel data and heater to work.

 

[peteski]

I never heard of BCM in 79-85 Eldos. They only have ECM.
BCM is Body Control Module (in newer caddies).

Neither my 84 or 85 Eldos have a BCM.

The actual climate control and MPG display panels have some electronics in them, but they still get most of their data from ECM.

Peteski