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I have tried to search this site, but I come up empty. OK, my ECM died and left me stranded and had to get towed home. This was after I had put a new ground wire directly from the negative battery pole to the body. I screwed it into the body with another ground wire from the wiring harness...

I have heard that the 86-87 ECMs that are used in the GNs were also used in other GM cars. Does anybody know which ones? I would also like to be able to do the firmware updates to the ECMs for the bigger injectors. Does anybody here know where I can get the drivers and the equipment to do...