ignition problem PLEASE HELP!

My 96' 2.4 dohc engine wont start. i tested everything and found that the ignition module has a +12 volt output but is not sending a negative pulse to either of the coil packs to engage a spark. the only problem is that i already replaced the ignition module, both coil packs, coil pack housing, wires, plugs, cranksensor, and pcm/ecu. any help would be very appriciative. thank you.

My 96' 2.4 dohc engine wont start. i tested everything and found that the ignition module has a +12 volt output but is not sending a negative pulse to either of the coil packs to engage a spark. the only problem is that i already replaced the ignition module, both coil packs, coil pack housing, wires, plugs, cranksensor, and pcm/ecu. any help would be very appriciative. thank you.
HAVE YOU CHECKED ON RECALLS FOR THIS PROBLEM YES THER IS STILL RECALLS ON 96'S.......CHECK ONLINE AT PONTIAC THEY WILL EMAIL YOU**