90 Fleetwood climate control still not working after replacing Blower motor and BCM
 

Can’t fugure this thing out, I’ve swapped out about 10 BCM units from the junkyard and even tried the brand new one and a brand new blower motor and I’m still getting a “c” on the fuel gauge and on the climate control panel, and the blower motor is always on as a default. The BCM on this fleetwood is under the hood on the firewall, unlike most I see people have are under their dashboard. Any new suggestions would be greatly appreciated. Ty.