94 Chevy corsica V6 3.1 SFI won't start engine turns but wont' turn over what could it be?

MY CORSICA, 1993 3.1 L IS FAMOUS FOR GOING THRU COIL PACKS, I KNOW IT'S BACKWARDS BUT I START WITH THE COIL PACKS AND WORK MY THRU THE TROUBLE SHOOTING STEPS, 9 TIMES OUT OF TEN I HAVE REPLACED THE COIL PACKS. CHEVY LOCATED THEM IN A POOR PLACE. TIM