No spark from the distributor cap? on 1990 Chevrolet G Series Van (G20)

Has power to the distributor, replaced coil, had module checked, it was good, checked rotor, distributor cap, and wiring still no spark from the spark plug terminals on the distributor cap.

Check the ignition pick up AC Delco part # 10496783 about $28 at your local parts store, But have them double check that number
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sounds like you need that small wireing harness autozone has them