I'm 99% sure it's the roof marker lights causing the vibration. I can stick my hand out my sun roof and push down on the roof marker lights and the vibration stops. I would be so lucky to have the 'new' plastic trim on the sides of the windshield fix my problem. Now I just have to wait and see if GM releases these sometime soon?!!!?
I have heard about the electrical tape fix...also someone else used some sort of plastic moulding...I just think there should be something better. Not one of us bought our H3 thinking we would be 'duct taping' together
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Originally Posted by HummerNewbie
The DS A-pillar plastic is the black plastic trim that goes up the side of the windshield on the drivers side. I don't know if I was just lucky in the fact that it fixed the issue on mine but maybe when the new ones get to the dealership it will fix yours. I have also had mine get so loud that you could not understand what was on the stereo. For a week or so before I took it in this last time the vibrating noise would start at as low a speed as 50 MPH. So far after close to a month I am still having no issues. One thing you might try as a test to see if it is the marker lights or if it is the a-pillar is put some electrical tape along the leading edge of the marker lights. This should stop air from getting under them and causing a vibration. I believe someone did this and it worked for them. Let us know what happens if you do try it.
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