Electrical problem
1993 GMC C1500 V8 Two Wheel Drive Automatic 272000 miles
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My 1500 shut down while driving and wouldn't start again.
I changed the electronic control module, the coil pack, and the ignition control module. The ignition fuse under the dash is good. I don't know what else to check. I pulled a code and it said ECM fault, but I changed the ECM and its still wont start. There is no fire between the coil pack and the distributer cap. please help.

Inspect and test the distributor pick-up coil see below

Am i just looking for continuity?

No.1 should read infinite and No.2 500 to 1500ohms

No 1 was Open Line (infinite)
No 2 was 862 ohms.
Any other ideas would be great. thank you.

Check for battery voltage at the pink wire on the coil-No power there and ignition fuse tested good-its coming from the ignition switch.

pink wire is drawing the same voltage as the battery.

Could be a bad ignitiion control module again or the computer is not picking up an ignition reference signal to tell the ICM to fire the coil-

Try this disconnect the coil wire from the distributor and ground it to the engine and crank it over-do you have a snapping blue spark? If so check the rotor and distributor cap-it has to make it out of there to get to the plugs. Still no spark recheck above and test the wiring from the distributor to the computer-