I found this website easyautodiagnostics by Abraham Torres-Arredondo who really seems to
know his stuff. Very detailed with helpful pix. I highly recommend you visit his site.
I will definately make a donation to him on my payday. It's well worth it. I've seen enough
absolute BS out there about these modules but nothing like this fellow has done anywhere.
I hope you find it as useful as I did...enjoy!
http://easyautodiagnostics.com/gm_icm_dist/distributor_ign_module_1.php
