2004 Oldsmobile Alero ECU

I have no idea of where my ecu is.
Nor real idea on the programming of it eithet.
2004 alero she run so well.
This not starting cause of ecu codes is bad. I need help.

I’m sorry, but I don’t entirely understand what you’re getting at

This is what I know . . .

You don’t know where the engine control module is

The car runs very well

You’re not familiar with what’s involved, in regard to reprogramming/flashing the module

Now here are my questions . . .

What is your concern?

Is the car not starting?

Is the module not storing codes?

No offense, but without more information, I doubt that flashing the module will fix your problem(s)