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    EFRAIN REYES's Avatar
    EFRAIN REYES Posts: 1, Reputation: 1
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    #1

    Mar 13, 2015, 03:31 PM
    2007 yukon XL denail knock sensor code PO332 & PO333
    Got a code reading po332 andpo333 on my 2007 yukon xl denail is the knock sensor bad ?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Mar 13, 2015, 05:00 PM
    The knock sensor could be bad, the connector could be bad, or there could be a short or open in the wiring. There's only a remote possibility that the problem is with the PCM.
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