Starting issues

My 2004 Saturn Vue 3.5lt has starting
issues.  Getting fuel, but no spark.  
We have put in a bypass for the BcM
anti theft issue and still not starting.  
Tried the relearn, nothing.   We can
smell the fuel, but it isn’t getting a
spark to turn over to start.   In the
past, it has taken about 15 min of
trying and finally would start and run
fine.  It doesn’t ever stall once
running and runs smooth.  New oil,
new oil filter, new spark plugs.   Need
new ECM?  Running out of ideas.  
The anti theft light would come on
while driving, and stay on.