Camaro won't start

I assume you have electronic ignition, I had a good mechanic tell me many years ago, that if you go to your car and it wont fire, more than likely that it is the electronic ignition module in the distributor, 2 times my self this had happened , you know what he was correct both times, I always carried a spare in the glove box, if you buy new module buy a good on, they last longer