Nobody can really tell you which connector. It is a matter of trial an error. After all, we are diagnosing through electrons.

Have you read this entire thread. It provides some examples. You might also use the Search tab, top middle, and locate other SUGGESTIONS.

 

It should be noted that the BEST and ONLY advice concerning airbag system repair is "let a professional do it". They can be dangerous if you don't know what you are doing. It is definitely dangerous to drive when they are not working.

Any amateur touching of the system is at your own risk.

 

I've been monitoring this thread for a while because the symptoms also appeared in my 2009 HHR. It seemed the service airbag warning came on randomly. Having read the thread, I now suspect it was due to plugging in my iPhone power supply. I swapped batteries yesterday and discontinued using the power supply for my iPhone. So far the results are no Service Airbag warning.

I appreciate MindDrive starting this thread. Its helped me a great deal. But I don't think i'd ever want to do business with him.

I've found GM cars to be quite reliable and well engineered. I think they are a good value. And no, I don't work for GM.