My H2, Denali and GMC truck all make the same cracking sound. The dealer said that it’s the pillar molding vibrating against the window and remounted it. The noise stopped for a month or so then it came back. I think the windshield is mounted too close to the metal frame around it. There should be a bead of sealer/glue between the windshield and the trucks metal frame. I think it’s very thin and under high wind pressure against the windshield its causing the cracking sound as it is hitting the metal. As we know H2's are known for cracked front windshields when you drop the hood too hard. I may be right or wrong but I hope this helps a bit. BIG-C

White 03-H2-LUX

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