Had a code 54 ended up being my oil pressure sensor, now I’m getting the injectors to pulse during cranking but I’m not getting any spark. It’s a brand new Delphi distributor the ignition module went bad the night before so I swapped it with my old gm genuine, when the module failed the injectors wouldn’t pulse so I don’t think it’s the module that’s failed again. I’ve check the cap and rotor, the pickup coil and the coil. I’m simply out of ideas.