What would typically go defective 1st the coils or the module. I bought a coil pack from the wreckers and it only worked for a few weeks. Just wondering if I should try the module this time.

 

What year and what engine?

87 v6 has 3 coil packs on 1 ignition module.

 

Sorry it is a 2003 Cavalier with 2.2 eco-tec engine. The rest of the story I did buy a complete coil pack from the bone yard and it did work perfect for abought 2 weeks then it failed. I did exchange it and installed another used pack and so far this one is still working. If this fails I may consider in buying the coil pack and install my old module