I can tell you what not to do!! My ’95 was blowing the ECM 20 amp fuse while I was on the road. I kept replacing it trying to get back home. I ran out of 20 amp fuses, so I put a 30 amp in. It didn’t blow the 30 amp, but the engine shut down as it did when blowing the 20 amp and I had to be towed back in. It’s not showing any codes, so all I can do is troubleshot with the GM shop manual. I replaced the crankshaft sensor with a new one, replaced the VCM with a used one and it’s still a no start situation, with no spark. I’m still looking for the problem. If and when I find it I will post it.