Overwriting can information

I have a hodgepodge of oem modules in a vehicle. I have a specific can address my ipdm is receiving that is transmitted out through a programmable module, but the ecm also has something on that address.

-As far is I know, the oem ipdm and ecm I have no options to change these address and it would be more trouble than it’s worth to create a second network.

-The module I have is programmable when it comes to rate, address, and actual data, but when you apply the transmission to the network, it essentially crashes.

I assume there isn’t any thing I can do, but maybe there is something out there I don’t know.