The jury is still out on that, my buddy that works at GM seems to think that the BCM (body comtrol module) is where the security system stuff is operated from, passlock/passkey whichever it is. He seems to think that if that isn't there, we only need to supply the PCM (powertrain control module, mounts to the engine)with voltage (on the correct pin of course) with a regular key switch and it will run. I was talking to Westers earlier last week, they reported that they could turn off certain codes in the PCM and remove the transmission codes (for manual or non-electronic transmissions). I might try wiring up my engine this week some time and see if it will start. -Chuck