Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
It's probably under engine performance and there's probably a separate diagrams for each connector at ECM then you have to just go through and write a pinot for each and compare them
I have gone through all of the engine and most of the other wire diagrams on bbbind.com and have been able to map out a lot of the connectors pinouts for the 1996 riviera and 1996 bonneville. However, all the ones i have so far line up exactly.
Attached is the pinout i made along with some other cars i was able to find that dont match the 96 at all.