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Recent content by Bumbling fool

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    2007 Grand Prix 3.8l Secondary air injection P0411, P2440, p2431

    I have several codes for the secondary air injection and was wondering if there is anything else besides the air pump and the check valve could be wrong. The codes are P0411, P2440, and P2431. I replace the valve once before and it cleared the codes I had at the time but they came back. I think...
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