Guide me on searching for a PCM

[RonD]

Ron that helps a lot thank you! Other questions: EGR, CPS Are not present in my truck is that a problem?And I think I can surmise the newer PCMs can't be retrofitted to the older Correct?

Thanks.

Newer as in replacing EEC-IV with EEC-V is a no, IV is a 60 pin computer, V is a 104 pin computer so obviously the connector and wiring won't match.
And EEC-V also requires a few more sensors to operate properly.

You could swap entire wiring harness and dash, and some do in V8 conversions.
But as far as a plug and play swap, no, newer computer can't be used.

You can use newer EEC-IV to replace older EEC-IV, people did that in 2.9l to 4.0l swap, and also just to replace bad PCM, but you still need to match engine and trans

 

[Mark_88]

^ this is what I had to do to go from an 88 2.0 carb setup to a 96 Fuel Injected setup...wasn't hard to do but it was quite a bit of "monkeying around"...

I have my first CEL as a reward...not sure if it was on before I started the swap...in fact...I think it was off...anyway...it might be worth your while to consider the effort...the newer wiring harness is pretty much the same right up to 2001...maybe later but I haven't seen anything newer than that...