The SC80571VFN is a Motorola processor. I'm not familiar with it, but there is info out there about them.
http://www.seekchip.com/icstock-S/SC80571VFN.html

The C96N is also a Motorola Processor...

Yeah, the DSM's EPROM contains executable code.

The link I posted will show you where to look for the microprocessor, then get the numbers/letters off the top of the chip.http://starparts.chrysler.com/starlibrary/marketing/reman/Electric.pdf

I...

I am curious which microprocessor your ECU has. I have been searching around via Google and found that some of the SBECs used the exact same Motorola processor that the DSMs use, for which there is...

I can't say much as far as how the GM files were obtained, but as far as the DSM stuff I'm into, a group of like minded folks put in a lot of work and research to disassemble the code. From reading...