Driving at HWY speeds 75-80 I get a random vibration noise in the cab seems to be coming from passenger side front corner of the cab under the speaker. If you touch the speaker with the radio off HVAC is off you can feel the speaker vibrating. I was driving west and there was a STRONG south cross wind. I found Bulletin #20-NA-035 that has a correction for 2500/3500HD but nothing for the 1500, different hoods. I have a clip attached not sure if it will work. It almost sounds like a squeaky red wagon wheel if that makes since..... I'm taking it in to the dealer next week looking for any help to make sure its only one trip at the dealership.
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