2021 Chevy Silverado Trail Boss exhaust noise

Описание к видео 2021 Chevy Silverado Trail Boss exhaust noise

I’m having an extremely annoying and difficult to find exhaust noise coming from up front toward the catalytic converters. I can’t tell if it’s an exhaust leak or something coming from transmission. But as you can tell from video it sounds like an exhaust chugging issue and it’s more prominent when I drive like a rattle can with sand in it.

I’ve been told it’s the flapper valve but there’s no valve up front here. Dealer says sound is normal and I’m just hearing lifters from the engine in exhaust.

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