Sounds to more like a mis-diagnosis of the original problem and it isn't the PCM that's faulty. More likely that the PCM isn't getting any power and you've ended up down a rabbit trail out in the weeds chasing the PCM replacement (likely unneeded).

 

Exactly what I suspect as well.

 

Your initial description made me immediately think of an open check valve in the fuel pump, thusly, no start after a drive. So many of those the past 3 years, mostly during the summer. The valve stays open, creates a no-start, crank only condition. I don't think your ECM is the problem. Remember, these trucks certainly aren't new, so parts go bad.

 

It's amazing, really, how long the pumps last. That check valve seems to puke before the motor does.

 

I thought i had to replace my pcm on my 98. So i bought one and plugged it in and truck still would not work. Long story short it turned out to be the connection. Connection was dirty and lightly corroded. I cleaned it and now both pcms work.

 

That's sounds like my problem! It was running fine and I stopped and turned it off and it hasn't started since. How do I go about checking the open check valve?

 

do I just need to replace the fuel pump. If so my boyfriend is going to crap down both legs. He is tired of replacing parts because we think they are bad. Lol. We are running out of parts to replace. I think. Lol.

 

That is the normal way of doing this. Finding single parts is really tough, and the valve is part of the pump housing assy, so this would be a drop the tank and replace the pump fix. Sorry for your BF. Parts can be replaced, and so can BF's and GF's, LOLOL. It's really not that hard, and NO you don't need to pull the bed to change the pump.