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    Borla exhaust letting off rattle at medium-heavy acceleration VIDEO

    I'd say just under and thousand. Got a reply from borla today and they think it's a failing valve. Representative said they should be replacing it under the warranty, just waiting on their reply after I sent them over the original invoices.
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    2017 Denali fluttering when accelerating. VIDEO

    No real update on a solution.... After contacting GM one of their technicians said the noise was "normal" and that they are aware of the issue. I asked them which it was, was it "normal" or a known issue? Its really just a way of them "copping out" and I did t feel like fighting this any longer...
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    Borla exhaust letting off rattle at medium-heavy acceleration VIDEO

    Went through GM dealer and got the Borla exhaust for my 2017 Denali 6.2. I'm getting this rattle(woodpecker) sound when at a medium to heavy acceleration for a few seconds. Any ideas? I've gotten under the truck and the exhaust seems to be secured properly so it leads me to believe its within...
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    2017 Denali fluttering when accelerating. VIDEO

    I'm regretting my purchase. Some may say it's a minimal sound I'm getting but I expect a reasonably quiet ride from a vehicle with this price tag.
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    2017 Denali fluttering when accelerating. VIDEO

    This is so strange to me... can't believe they consider this normal. It's really is extremely annoying especially because I spend much of my car travel time during the week returning work phone calls. I can hear the sound fluctuating as I adjust the gas pedal. Frustrating.
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    2017 Denali fluttering when accelerating. VIDEO

    Mine was at the dealer all last week, they replaced a belt that was showing uneven wear... it did not solve the problem. Took the truck back in on Tuesday but still haven't heard anything from them. Mine makes this "clicking"/"fast flapping" kind of noise at low speeds and at highways speeds...
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    2017 Denali fluttering when accelerating. VIDEO

    Took mine to a different service center this morning. They didn't want to deal with it... claimed I had to take it back to the original servicing dealer since they already started to look at the issue. BS... So your issue all gone then thavngr98?
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    2017 Denali fluttering when accelerating. VIDEO

    Thanks everyone for your input/ideas! So i went and did that bolt "hack" on the valve and it didn't really seen to do anything about the noise I'm hearing... This is after having the entire exhaust swapped out by the dealer a few weeks ago. They said it was the valve making the noise and...
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    2017 Denali fluttering when accelerating. VIDEO

    Please keep me posted on what they say.
  10. D

    2017 Denali fluttering when accelerating. VIDEO

    That's what I was told when I took it in for service. They changed the entire exhaust and the issue still persist...
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    2017 Denali fluttering when accelerating. VIDEO

    Picked up a 2017 Denali just over a month ago, been hearing a "fluttering"/rattling type sound when accelerating. I'd say it usually happens at about 1500-1700 RPM... occurs when you're asking for a little more speed and usually stops when at cruising speed. Dealer said it's the sound of some...
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    Strange fluttering sound 2017 denali

    Picked up a 2017 Denali just over a month ago, been hearing a "fluttering"/rattling type sound when accelerating. I'd say it usually happens at about 1500-1700 RPM... occurs when you're asking for a little more speed and usually stops when at cruising speed. Dealer said it's the sound of some...

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