Crank no Start Changed out parts

Buick Lacross 2005 Im Getting Fuel checked that 1st. So i Changed out Crank Shaft stll no Start chaned out the crank shaft censor, Still no start. Took off Moduel Coil pack, Put a old 1 back on. CAR STARTED ran bad tho! Thought i fixed problem. Ordered a new Moduel Coil pack, Put on crank no start again. Played with tighten all screws, Came back on. Ran took it around corner test drive. Parked it. Hasnt turned back on again. Need Help. Confused