GMC Sierra 1500 Silverado No crank no start Diag/FIX! crank sensor or bad PCM?

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UPDATE: went to revist this after neutral safety switch was replaced and on further review cam sensor behind engine was bringing down 12v to crank sensor, unplugged it and truck started up

[@titofuentez2340]

bro you said it was pcm, neutral safety switch now its the crank sensor which one is it

[@jrr1631]

starter relay

[@sg4218]

So what was the problem bro

[@globalcommerce7654]

Answer is pinned in comments..