Is there a chance anyone has acquired the schematics for a 1227302 ECM? I am trying to isolate the ECM from the EGR solenoid. Of course, as I went through the flow charts, I ended up at a bad ECM or solenoid. Duh! I've did some poking around w/ an ohmmeter, and of course the first chip you run into is Delco proprietary. Can't find a data sheet for it. I know I'll probably spend more time futzing w/ it than if I just went to the parts store, but it bugs the crap out of me when I might be able to fix something for a $0.50 chip.
I see you all talking about WinALDL in other threads, sounds interesting. Would it let me see what's going on between the ECM and engine components? Thanks guys.

 

Look for the schematics for the 1227170 ECM, it is the same hardware as the '7302. Ludis did these up a number of years ago.

WinALDL will show the sensor data along with other information.

RBob.

 

Thank you for the schematic info. Don't know why I couldn't find that myself.