need help

What would cause a 1997 Chevy truck with a Vortec 350 not start? I have fire at the wiring plugs for the Coil, Ign. module And dist. But no fire through coil wire to the dist. or plug wires to plugs. Please Help I am stumped.

id guess bad coil...you said yourself that you have voltage to all the necessary parts but no spark from the coil, so thats where i would start. before that is the ECU, and since you have a signal i dont think thats the problem.