Chevy venture intermittent no start

I have a 02 venture with the 3.4L. No injector pulse when no start. Security system seems to be working properly. Just changed the crank sensor behind balancer and still does the same thing. No trouble codes present. Just not sure what to check next. Any help would be appreciated.

I have a 02 venture with the 3.4L. No injector pulse when no start. Security system seems to be working properly. Just changed the crank sensor behind balancer and still does the same thing. No trouble codes present. Just not sure what to check next. Any help would be appreciated.
Well, you have to check all the basics. Fuel pressure, etc. But the crank position sensor used for starting is behind the engine between the engine and firewall. It is connected to the Ignition Control Module by a twisted pair of wires. Make sure it is not touching the exhaust manifold. Next time it does not start, wiggle the wire and see if that helps.