Picked up two used xx826 PCMs this morning. How do I program it to my car? Do I just load a full write of my old stock file? At this point I have installed one of two, plugged in my battery, turned key to acc (no response), turn further to on (no response), and finally tried the start position (no response). The only response is that the check engine light is on and a slight ticking noise from behind my passenger side dash.

i assumed I'd be able to plug it in and load a full write file but no go. What am I missing?

Thanks,
Slim