Hi
I’m writing you because I want to swap my 98 camaro ls1 pcm with a 12200411 pcm that comes from a 2002 4.3 v6 blazer (vin 1GCDT19WX28236102) and I need the connectors pins location to be sure..
I've search a lot on this forum and web but didn't find anything clear.

 

So what exactly are you asking for? The pin numbers/locations? The circuit numbers. The wiring colors? The complete wiring diagram for the PCM? What? A lot of this info is not going to be found in one schematic.

You may need a subscription at AlldataDIY.com. If it's something reasonable, let me know and I'll post it.

Is the type of info you are looking for at this site? 1997 1998 Corvette Camaro Firebird PCM Pinouts
or this one? https://troubleshootmyvehicle.com/gm...98-1999-page-1

 

I'm pretty sure this must be exactly the info you are looking for. https://www.s10forum.com/threads/att...inside.612802/

 

I already have this, but thanks
I would like something like that for the Blazer pcm:

 

OK - I think I may be able to dig that up for you tonight. Did you look at the link in the second message above? AFAIK the 2002 express van with 5.7 vortec would be the same as Blazer with 4.3 except for the injector wiring harness. But I'll get it for you.

 

Ok thank you for the information.
Everything seems to match unless some wires that arrived in "not use" location on the Blazer pcm.
I think that's ok, the Blazer pcm do not use those wires but the pcm may use theum.
My question is will the Blazer pcm work with these new wires?

 

Here's the pinouts for the connectors on the 2002 Blazer PCM attached as a PDF file. Good luck and best wishes!

 

Thank you but if this are the right pinouts it doesn't fit with a 99 Camaro 411 pcm not even with the express van.
Perhaps this explains why the engine don't start even that I turn off the vats with hptuners.

 

I'll look up the 98 Camaro LS1 and a 99 Camaro LS1 for you tonight.

 

They are not the same so I'm thinking to put a 99 Camaro operation calibration in the Blazer pcm with hptuners..
For me the Blazer pcm calibration even well pin won't work with the "new" wires (that I put in some of his "not used" pins)