Hi everyone ! Does anybody what can cause this ? At Highway speed (especially when road conditions are a little bit bumpy), the front windows won't stop "crackling / clicking" (see video attached). Good thing to mention : There is nothing loose that can vibrate in the cupholders in the doors. The sounds resonates through the glass itself > It seems to be coming from the bottom of the window rail, however it does not stop even if I apply pressure on the glass itself, or wedging my fingers into the rubber seals. Also, no plastic trims are loose and even if I apply pressure on the entire surface... the cracking sound does not stop. (I just drove 600Km and it did that all the way... which drove me crazy..!!). I got an appointment in few days at the dealership, but I wanted to know if anybody every had this issue before with their GMC Sierra 2020 ? and if so, what was the issue ? Thanks !!
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