1972 Chevrolet C10 — no crank with full dash power, then it starts later — trying to narrow this down

I'd want a measurement, not a hunch. Write temp, speed, and in-gear vs coast when the 1972 Chevrolet C10 does it — then decide on parts. That's the branch I'd chase this week. This is from a 1972 Chevrolet C10 in Nationwide with 178,500 miles. That's the sequence I'd use. No warning lights, which is why I'm documenting it.

This is usually cheaper to test than to guess. Move a coil or plug on the 1972 Chevrolet C10 if it's cylinder-specific and see whether the code follows. Don't erase codes until someone who can help has seen them. Run the total, not the monthly, before you commit. That's coming from doing this as an owner, not a shop. No warning lights, which is why I'm documenting it.

If it were in my driveway, get a real battery/charging test on the 1972 Chevrolet C10, not just resting voltage, before blaming a module. You'll know quickly if you're on the wrong tree. That's the sequence I'd use. Heat soak after errands is the other window.

It did no crank with full dash power, then twice this week, both times after sitting. No change in mileage feel. I'd rather pay for diagnosis than a second guess-repair.

OP update: scanned the 1972 Chevrolet C10 again and still only have the one pending code, no new lights. If that fails I'll eat the diagnostic fee.

Tried a second charger / second scan and the story on the 1972 Chevrolet C10 didn't change. Doing the boring step first on purpose.

I'd want a measurement, not a hunch. Capture voltage while the 1972 Chevrolet C10 is actually failing — after it restarts you've lost the clue. That's the branch I'd chase this week. This is from a 1972 Chevrolet C10 in Nationwide with 178,500 miles. I'd want a dollar figure or a measured spec, not 'should be fine.' Not interested in a five-hour wait for a shrug.