Did I fry my pcm? Or ecm or the (brain of the truck)

What is your question?

I used a new aftermarket pcm I have ordered stage two, and I put it in wrong and it started throwing a lot of codes for example one of the 15 that came up said lost communication with ecm/pcm, and a bunch of other codes need some help here, and also the truck is misfiring and runs like cra