I am having an issue a 2004 blazer that died on the side of the road randomly. Here are the symptoms and what i have tried.

Turn the key and the fuel pump does not prime and there is 0psi as far as pressure goes. There is also no spark what so ever coming from the plug wires.

I tried replacing the ICM from a donor (perfectly running) s10 I have, and a brand new crank sensor as I read that those two can affect both spark and fuel.

A few things that happened shortly before it died... Engine misfired, randomly the radio completely cut out and went blank and then eventually came back. Last I had the MAF sensor unplugged while i waited for a new one to arrive for a few days. After the engine died the code cleared itself and there are currently none present. At no point was the battery disconnected or had died.

If anyone has some wiring schematics for things I can check that would be much appreciated as well as any advice.

Thanks

Edit:

Within the last 10k miles the truck has...

New plugs and wires
cap and rotor

 

I think You should rectify the fuel pump and supply line problems at first prior You head on to spark and sensors. That may lead You to one common reason and is easier to do.
Is the problem intermittent or not?
I am sorry, I don't have wiring to spare. But I'm sure You should google them easily.