my 2001 firebird wont start.

It was running fine all day then that night it killed on the road. It will turn over,
won't start. I put in in storage for the winter and came back to it this fall.
Replaced battery, ignition control module, coil. sealed wires to to ecm and pcm,
cleaned mass air flow. It has spark and fuel....The computer had some water
(maybe) it's being replaced too....can't think of anything else.