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  1. Error code P0011, Knocking Noise

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    I have a 2006 G6 GTP 3.9L engine, manual, about a week ago my engine started making a knocking noise, only occurring when I give gas around 2000-3000 RPMs. The noise speeds up as the RPM's increase but is not noticeable at idle. Yesterday when on the highway, the knocking noise beacame much...
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