I hope I'm doing this right cuz I'm new to GM forms but I am so glad to find topics that genuinely useful. This thread has mentions of AutoZone and ICMs. The Autozone near me has been there forever and has had an icm tester for about 6 months with several connectors for various makes of vehicles, foreign and domestic. For now I thank you for the heads up on green death I think I can finally get my no spark Grand Prix on the road again. the inside connectors in my coil look green and I put it back on there still no spark but between that and cleaning a connection or 2 this mystery might get solved thanks for being there guys. Oh, for the tester, call parts store1st cuz there'* some out there but they're not everywhere yet.