I have read many post regarding different types of SES light flashes, but mine is not working at all now. Bulb is o.k. , but car do not start and I canīt hear the fuel pump working.
I have checked the fuses at the fuse box, and they are all o.k.
Please help me, as there is no GM service for U.S. made cars around here.

 

I had a similar experience with a 2.8L firebird. The car started running very rough. Similar to having one or two spark plug wires disconnected. I managed to limp it home and drove my other car to work. That evening it refused to start and there were no codes in the computer. There is supposed to be a pattern of codes that indicates the ecm is working properly. My car would not blink out that initial pattern. I had to replace the ECM.

Steve

 

Than you Steve.
Finally ECM is o.k, but fuse link near battery has blown together with the fuel pump, so a new fuel pump has to be ordered.