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  1. M

    72-79 MPH vibration 2008 LZT

    New member here... My 68K 2008 LZT has developed a high frequency vibration that occurs between 72 and 79 MPH and which is accompanied by a "rumbling" which is at the same frequency and that can be felt (and ever so slightly heard). The vibration is not present below or above that speed...
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