97 grand am passlock 1 problems

I was recently called by one of my customers regarding their Grand Am.  She stated it wouldn't start with the autostarter or the key.  I went to investigate it thinking it was a broken wire or my resistance was off.  I should also state that this was installed over a year ago.  I pulled the steering column apart and checked my wiring and found nothing obvious.  My wiring was ok, nothing broken or loose.  I disconnected my bypass kit and rehooked up the factory harness.  It still wouldn't start the theft light was still flashing.  I checked the resistance supplied by the key and it is still the same as my circuit so that isn't it.  I disconnected the battery for an hour to reset it and that didn't solve it either.  The dealer told me to remove the whole starter and wiring which I did.  Now I don't know what else to do.  I know enough about the bypass kits but not much more about how to trouble shoot the rest of the GM system itself.  I am afraid that I will be the scapegoat for this car not running.  Does anybody else have any ideas to check this system? 

Thanks in advance

Jon

Well I just went and performed the reset ritual and it worked.  Thanks for your help!  I don't see many of these systems, lots of pass 2 and transponder.  I still find it amazing that the "techs" at the dealership didn't know about this.

The Techs know that.. they just don't wanna tell ya.. they'll get 60/hr to do it for you.. plus the towing.... plus anyhitng else they wanna make up.. they won't telll you how they do it.. hell, I don't tell potential customers how to wire their radio up.. We all gotta make a living somehow..