I have a 97 chevy 350 vortec that i am having problems with, it has fire to all the spark plugs and it has fuel delivery. the truck all of a sudden turned off while driving and would not turn on again. i disconnected the battery and when i connected the battery back it would not even crank(turn over). i checked all the relays and all are good.i also had the starter checked and is good too.ichecked the crank fuse while i turned the key to start and it has fire too.i replaced the coil, ignition module, rotor and cap and plugs are almost new, also replaced the crank and cam sensor. still the truck wont even turn over.im out of ideas.