1998 Chevy Astro hard time starting

When the camshaft sensor reference pulse is not detected at a correct relative position with the crankshaft pulse, the code P1345 will be set. Most likely causes for this Chevy check engine light code include a faulty crankshaft wiring connector concern, faulty camshaft or wiring problem. The distributor is located in a fixed, non-adjustable position. Ignition timing is preset and cannot be adjusted. The Powertrain Control Module (PCM) controls ignition timing