not sure where I am posting this but please someone help me, i'm at my wits end with this problem, took my car out, ran a quarter mile in it, brought it back to the house and shut it down, car set for 3 hours, went out and started car up and backed it back in shop, went out next morning to start it and it turns over but no start, I checked and found there is no spark, I went as far as to change optic spark distributor again, change coil, changed crankshaft sensor, still got the same problem, if I have no spark, is there any chance that I have messed up the timming and if so how would I check or is there a way to check without disassembling the engine, thanks guys for reading this book, but please help if you can, also sorry if this post has be put in wrong place

Did you check the ICM module? If that isn't working, you won't get spark.
http://easyautodiagnostics.com/gm_ic...agnostic_1.php

before I start beating on coil do I drill the posts out of the coil bracket or do they punch out Thanks

The coil is attached to the ICM bracket with rivets. Drill them out. A replacement coil may come with small bolts to reinstall it.

Thanks injuneer easiest coil change I've done in a long time.