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I have a code # po332 on my 2005 chevy silverado, I cleared it and the code reappeared after two weeks. I use 92 octane fuel and do not hear any knocking noises coming from the engine.

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This engine is made to run on 87 octane.Sometimes when using a higher octane can cause a check engine light or other driveability problems.If you don`t think it is your knock sensors then get some used ones at the salvage yard and try them.They are under the upper intake plenum.

Posted on Nov 20, 2009

Testimonial: "thanks for the info, I will try new knock sensors"

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