I saw Keenans video about repairing a ford idm for a 7.3l. He said there was supposed to be a parts list for the repairs but couldn't find it anywhere.

I picked up a 1997 Ram with a 5.9 and 46RE. It looks like the PCM might be dead. I found Keenans Youtube video about opening a JTEC PCM and realized I was on the right track looking for a voltage protection diode. However, my PCM doesn't exibit such a failure. When I turn the key on I'm getting voltage at the two 5v supplies (4.5 on one and 3.5 on the other) I don't get any response from a scan tool or the check engine light when doing a key self test. No lamps from the PCM appear to work, and the ASD and FUEL pump relays aren't getting their ground. I removed the PCM and supplied bench power, wired up a DLC between the PCM SCI TX/RX and a ELM327 scanner and am unable to get a connection. I then wired a small bulb up to the MIL driver pin and get nothing. I checked this pcb over pretty closely and can't see any signs of poor solder joints or broken traces. Where should I go next? I feel like the simple, few skills needed, easy to diagnose failures are accounted for.

Purchasing used ppm for customer, new and aftermarket on national back order. All used parts suppliers warn that a used gm pcm may not be programable. Is it possible ? Are there any work arounds?