Question about 2004 Chevrolet TrailBlazer

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I have my chevy trail blaizer 2004 with P0140 code problem , i willi start to check , hope you can help

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The code PO140 is the 02 sensor on engine bank #1------#2 sensor,
which is the one by the catalytic converter.Have it checked.

Posted on Jan 28, 2009

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