98 tahoe ICM troubles

[exp500]

Greetings guys, I've been mostly a lurker, watching the show, Now I need some help with odd ICM Connector pin Voltages.98 tahoe 2door 5.7 4X4. No start. No spark.
Pin A KOEoff 12.5 v
Pin B KOEoff 0.4 v
Pin B cranking 2.5-3.6 VAC
Pin D KOEoff 12.5 v
So this much I've found, An open in wire Pin B to VCM pin 9 and replaced wire. Icm Pin D to ign coil Pin C.
Where do the rest go? I guess I'm unlearned how to search the posts to find what i'm looking for.I've paged thru posts to get this far, Any help or lookouts are welcome. Thanks

 

[exp500]

Greetings guys, I've been mostly a lurker, watching the show, Now I need some help with odd ICM Connector pin Voltages.98 tahoe 2door 5.7 4X4. No start. No spark.
Pin A KOEoff 12.5 v
Pin B KOEoff 0.4 v
Pin B cranking 2.5-3.6 VAC
Pin D KOEoff 12.5 v
So this much I've found, An open in wire Pin B to VCM pin 9 and replaced wire. Icm Pin D to ign coil Pin C.
Where do the rest go? I guess I'm unlearned how to search the posts to find what i'm looking for.I've paged thru posts to get this far, Any help or lookouts are welcome. Thanks

Update- I forgot to mention- No Codes. I have a couple known good ICM's, Just don't want to fry them till I understand more of where I am in this repair, Any Ideas or manual references would help.

 

[Big Mama]

Let’s invite a couple of guys with more experience than me @swathdiver @iamdub @HiHoeSilver @Galante fellas?

 

[willxfs]

This sounds pretty technical. Way over my head. Hopefully someone with some technical experience and access to wiring diagrams will chime in. Good luck.

 

[exp500]

Thanks for the replies, If I ever meet that Murphy fella - He's toast! Printer ran outta ink too! Doing a few more tests today. Lets see if "old school meets new school" produces anything.