Hello everyone, im a noobie to this site and to the diesel world. im looking for the trucks computer to get this truck running. my understanding is that the ECU/PCU is the same thing. now ii understand it is not the same thing. i currently have the truck at our local diesel truck repair shop. they are trying to find this computer and is having no luck finding one anywhere in the usa. I'm just trying to help him find one either new or remand. this truck is a 1999 dodge ram 3500 1 ton dully with the 5.9 Cummins diesel 24 valve, also has the 5 speed Manuel tranny. Can you suggest a place to buy one.

 

I would have a few used ones I pulled from 99 24V 5 speed trucks I have driven.

Do you need the ECM on the motor?
Or the PCM on the firewall?