Good evening, Everyone i wanted to ask anyone familiar with troubleshooting electrical problems on these GMT400 trucks. I currently have no power no lights on the dash no fuel pump activating etc. I first wanted to rule out the ignition timing aspect is it possible to have zero power if the firing order is off? regarding distributor wires to spark plugs. For example, would having a mismatch of these distributor wires cause my truck to just not start? Im going to a AutoZone tomorrow to see if my Optima battery is okay it was before i started wrenching on my oil pressure switch due to a leak. Could it be that i shorted something out? I'm in a dilemma I'm not sure if i did completely short something out due to incorrect firing order I'm saying this because when I plugged everything back in after the job I did have lights on the dash but no crank. I have a feeling I left something unplugged i did see a purple harness that was unplugged but I thought it was something the previous owner did intentionally. The purple wire is near the distributor close to the firewall.
Thanks,
Victor Diaz
Thanks,
Victor Diaz