I have a 2006 H2...no off roading...I notice terrible wind and vibration noise at expressway speeds ( 65+ mph) coming from the front roofline... I have tightened the roof racks and the running lights seem to be firmly attached...any ideas before I complain to the dealer/GM?

 

Sunroof wind deflector?

My friends H2 did that and it ended up being the deflector.

 

I find road noise is significntly less if I leave my wife at home!

 

:Broken Record:

If you are under warranty take it to the dealer they will fix it in a couple minutes. If you are not just take off the outer black A-Pillars. Apply 2 sided tapeor RTV Siliconeto the area where the A-Pillar edge meets the windshield. Put them back on and problem fixed.

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