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2003 CTS
25 Posts
Discussion Starter · #1 ·
I started out by wanting to test the wiring from O2 sensor up to the ECM (dreaded P0160). I see quite a few wires at the ECM end of things. I am hoping someone can point me to a source (read: free) that I can find out what pins on the ECM connectors will help me. Not just with the O2 sensors, but possibly other sensor signal tracing/troubleshooting when necessary.

I indeed did some searching and have not yet found an answer.

Thanks in advance for any assistance.

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