Jump to content

Helicopter/vibration noise at 60-80 MPH

aha1987

Recommended Posts

aha1987 Enthusiast

aha1987

Posted
Posted

I know I have posted about this before but I am experiencing a vibration noise that sounds almost like a helicopter at speeds of 60-80 MPH. The noise seems to come and go. After thinking that it might be some vibration noise from the powertrain, I thought I would run my own test by shutting the engine off at 80 MPH and let it coast.... the noise doesn't go away. I would like to think it's the tires (Nitto Trail-grapplers) but I drove another 2019 Silverado with stock tires for several weeks and it made the same noise.

 

Anyone experiencing the same thing? Ideas?

 

 

Sierra Dan Senior Enthusiast

Sierra Dan

Posted
Posted

Probably Dynamic Skip Fire technology and the exhaust droning similar to what K2 trucks sound like with the flapper valve removed in the exhaust.

Is your exhaust stock?

aha1987 Enthusiast

aha1987

Posted
  • Author
Posted
1 hour ago, Sierra Dan said:

Probably Dynamic Skip Fire technology and the exhaust droning similar to what K2 trucks sound like with the flapper valve removed in the exhaust.

Is your exhaust stock?

It does sound similar to that but I would think that it would quit doing it after shutting the engine off and letting it coast but it still makes the noise.

 

Yeah it is stock exhaust

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

I drove my daughters Honda Odyssey recently. We're driving the freeway I'm noticing a shutter come and go. My dad ears perk up and conversations cease I start really paying attention. Sure enough it happens at the same time the Eco light comes. Didn't know they had cylinder deactivation. Wish I did she'd be driving a Toyota. Reminds me of a recent visit to the father in laws. He's a big Honda fan. He's driving a new Honda. He's 87 and had a fairly new odyssey. The cheapskate I know him to be I ask what's up. He explains the oil light would come on half way towards an oil change, a recent development. The Honda service tec told it wasn't all that usual. Why should GM buyers care you ask? Easy, with Hondas reputation for problem free vehicles, if they can't get cylinder deactivation down no one can.


Sent from my iPad using Tapatalk

aha1987 Enthusiast

aha1987

Posted
  • Author
Posted
3 minutes ago, Sierra Dan said:

Hmmm.

Strange one.

Maybe have your dealer take a peek at it since you are under warranty.

Yeah very strange. I guess that's what ill have to do if it continues. I don't look forward to taking it to the dealer because I'm sure they will either say it's normal or they cant hear it.

 

f8l vnm Senior Enthusiast

f8l vnm

Posted
Posted

sounds like a case of the chevy shake blues . let us know what happens . 

aha1987 Enthusiast

aha1987

Posted
  • Author
Posted
1 hour ago, SILVER SLED said:

No hood bug deflector or window rain guard things?  

Neither 

smrr1 Senior Enthusiast

smrr1

Posted
Posted

Had a noise like this on another vehicle. Turned out to be a loose plastic part under the vehicle that would flap around at hwy speeds. Put the proper clips back on and it went away. Maybe check for anything loose under the truck. 

Gagliano7 Enthusiast

Gagliano7

Posted
Posted
On 1/25/2019 at 10:53 AM, KARNUT said:

Easy, with Hondas reputation for problem free vehicles, if they can't get cylinder deactivation down no one can.


Sent from my iPad using Tapatalk

That statement made me laugh. I have seen plenty of Honda's with problems. A honda civic i owned was the worst vehicle i have owned until i bought a 2013 subaru Impreza. Now the Honda is the second worst vehicle i have owned. 

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,938
    Total Members
    8,960
    Most Online
    C. Hart
    Newest Member
    C. Hart
    Joined

  • Who's Online   3 Members, 0 Anonymous, 519 Guests (See full list)

  • Latest Articles

  • Posts

    • Grumpy Bear
      Sugar Bears 2015 GMC Terrain SLE-2 2.4 AWD

      By Grumpy Bear · Posted

      287,500 Mile Service   8/13/2026   Reset Fuel Trims   Since the work done in the previous post there was a good improvement in response in all areas except right after a fill up where the LTFT would go -20%+ for about four miles while the STFT was near neutral. Before the work they both went very negative for a few miles after a fill up but act normal thereafter.    We did a systems check of the vapor recovery system for functionality and ability to hold a vacuum. That checked out fine. But this doesn't mean the charcoal canister is dead in the water. Testing that is next up. For now the reset of the fuel trims.    I intentionally shorted the fill exactly two gallons to eliminate any chance of filling the canister. On start up the trims were behaving normally until I got up and rolling where the LTFT went -10 / -11%% but the short was + 2 to 0%. Within a mile the the STFT offset the LTFT and by 2 miles they were neutral. HUGE improvement but still not hunky-dory.    I'll watch them for a few days. Perhaps another tank where I will fill completely to 'first click' and compare. Meanwhile on the hunt for a new canister and I'll toss another purge value at it for good measure. Pending the outcome of the canister test that is. Progress of any kind is welcome.    Fuel economy improvement with bringing hole #3 back to the living was a noticeable bump to the positive. Even on the few miles I drove after the refill I already see another bump up by the trims reset.     She's purring like a kitten with a warm bowl of milk.    BTW, adding 50 rpm to the idle took the majority of the negative timing out on cold start up and leaned the cold idle. No longer burbles in the cat. What a dumb way to heat a cat.      
    • OnTheReel
      Post your UOA, (used oil analysis) here

      By OnTheReel · Posted

      Yeah, shame I can’t really get that filter easily anymore. Running a PureOne. Your fave!    TAN would be neat to see. Confirmation I ran it too long probably. 🤣
    • superdave160
      Roll up bed cover experiences

      By superdave160 · Posted

      My son and I both bought new trucks in 2017. Both of us immediately put Truck Covers USA American Roll Covers on our trucks. My son still has his truck and it never sees the inside of a garage. We live in Alabama, so not much snow. My truck was my daily driver and was in the garage when I wasn't driving it or at work. No issues with either cover even after almost 9 years. About a year ago I sold my truck to my brother and bought a 2025 Silverado 2500. The second thing that I put on that truck was a new Truck Covers USA cover. They are very well made and have a very positive locking system. I looked at a Retrax and my concern was the way that the cover locked to the rail. BTW, the first thing I put on the new truck was step bars. Those new trucks are high!
    • superdave160
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By superdave160 · Posted

      The Allison 10 speed torque converter doesn't "lock up" like the previous transmissions. It has 4 operational modes; open, slip, transition from open to slip; transition from slip to open. I have an Edge CTS3 monitor and I monitor transmission torque converter slip. Step on the gas and you get a little slip. Take your foot off the gas and you get a little negative slip. I have not found a way to display the torque converter mode beyond that. My Edge CTS3 also displays something that our trucks should already display, the current gear. I also monitor throttle body position and engine load. If I see the engine load getting too high, I'll manually drop a gear.
    • Grumpy Bear
      Post your UOA, (used oil analysis) here

      By Grumpy Bear · Posted

      Nice result. Your filter is working well  I'd have like to have seen the acid number for this sample. Curious type that I am. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...