99c3500 7.4 pinout

[SNW MNY]

Does anyone have a pin out for a black box in a 99C 3500 7.4 L? Or a link so I can print it out I can find one for the pcm’s‘s that I got at the junkyard but I can’t find one for my own f—king truck

 

[df2x4]

Check here. Page 8, post number 77 by PM18S4. There's two Mediafire links to the '99 GM factory service manuals in PDF form. I'm sure the PCM pin outs are in there somewhere.

https://www.gmt400.com/threads/88-98-service-manuals.43575/page-8

 

[454cid]

Cool didn't know 99 was availble. I think I have an earlier one on my PC, but I don't think I've ever used it..... I forget I have it.

I should look into getting a tablet for manual use, also OBD2 apps.

 

[SNW MNY]

Check here. Page 8, post number 77 by PM18S4. There's two Mediafire links to the '99 GM factory service manuals in PDF form. I'm sure the PCM pin outs are in there somewhere.

https://www.gmt400.com/threads/88-98-service-manuals.43575/page-8

Thank you

 

[SNW MNY]

Thank you

Wont download

 

[df2x4]

Wont download

I just tried and the links are still working for me. What happens when you try to download them? If it's just opening them in a new tab you might have to right click the download button and click "Save Link As."

 

[454cid]

I just tried and the links are still working for me. What happens when you try to download them? If it's just opening them in a new tab you might have to right click the download button and click "Save Link As."

That's similar to how it worked for me.... open in a tab, and then I downloaded/saved it.

 

[SNW MNY]

Well now I’m at a standstill anyway, I got to 411 pcm’s’s both of them from S stands but somebody told me there is an issue with them being from S tens as if they don’t work…? and I don’t have any details yet.

 

[BeXtreme]

Well now I’m at a standstill anyway, I got to 411 pcm’s’s both of them from S stands but somebody told me there is an issue with them being from S tens as if they don’t work…? and I don’t have any details yet.

S10's were v-6 engines. I dont think just switching the OS will let it work on a V8. I think the number of cylinders is hard coded in just like the firing order.

 

[SNW MNY]

S10's were v-6 engines. I dont think just switching the OS will let it work on a V8. I think the number of cylinders is hard coded in just like the firing order.