[Gmecm] looking for ECM Pinout - 1228812

[Tom Matthews]

Hello all,
Long term subscriber, but haven't been active in like 7+ years...
Getting back into GM ECM projects. Strange to drag out the burner after so
long.

Got a strange one here...
1228812, with an AMZS Prom.
Out of 89 C1500 379 CI diesel... trying to swap over to 7747/gas... Anyone
have any pinouts of the '8812 ECM?

What could this puppy do besides lockup the trans? (700R4) 

Googling got me nothing, and I don't have an FSM :-(
Any other underhood wiring help appreciated also ;-)

Thanks,
Tom