JVictor
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2021 Sierra 2500HD Wind Noise
JVictor replied to Bobb Thompson's topic in 2020-2026 Silverado HD & Sierra HD
I have the 2023 GMC Sierra 2500HD gas and the whistling noise is for sure coming from the marker lights on top of the cab. I will have to pull the liner and tighten those. I haven’t noticed anything from the hood or grill area. I’ll post an update to let you know if that fixed it.
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