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2014 silverado whirl noise when accelerating at 35 mph

Nnecaise16
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Cupton Enthusiast

Cupton

Posted
Posted

Are you in Auto 4WD? I’ve noticed a different sound between 2WD and Auto when accelerating. Happened in my ‘15 and now in my ‘18 Sierra. Not sure if this is the sound you are hearing? But if it is then it’s normal. The link you posted won’t open for me.

dmorrisL86 Enthusiast

dmorrisL86

Posted
Posted

Maybe there’s a supercharger lurking under the hood...how hard is said acceleration? Haha

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Nnecaise16 New Member

Nnecaise16

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No it is in 2wd. And usually around 2500 rpms. It will do it at different speeds also. I brought it to the dealership and they are thinking it may be the serpintine belt slipping but it almost sounds like it is comming from underneath the truck. I’m hoping that it is as simple as a slipping belt!

thefishhawk Enthusiast

thefishhawk

Posted
Posted

Probably that flapper valve in the exhaust.   You'll find some threads on a search.   You can take a small c-clamp and clamp it open and then see if it keeps doing it so you'll know if it's something else.     It's normal but if it bothers you you can leave it clamped that's what I did.  

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AA24 Enthusiast

AA24

Posted
Posted

I recently noticed the same thing on my 2014 Silverado around 95,000 mi. Following and hoping someone has a solution. 

GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted
On 5/24/2024 at 9:02 AM, AA24 said:

I recently noticed the same thing on my 2014 Silverado around 95,000 mi. Following and hoping someone has a solution. 

We are sorry to hear about this concern with your Silverado and would like to take the time to learn more. Please send us an email to [email protected]. Make sure to include your Username and Forum name in the subject line with additional details. We look forward to your email. 

  • Haha 1
mikeyk101 Senior Enthusiast

mikeyk101

Posted
Posted
2 hours ago, GMCustomerService said:

We are sorry to hear about this concern with your Silverado and would like to take the time to learn more. Please send us an email to [email protected]. Make sure to include your Username and Forum name in the subject line with additional details. We look forward to your email. 

And you can do this on a truck with expired warranty how????

Buckwild27 Enthusiast

Buckwild27

Posted
Posted
6 hours ago, GMCustomerService said:

We are sorry to hear about this concern with your Silverado and would like to take the time to learn more. Please send us an email to [email protected]. Make sure to include your Username and Forum name in the subject line with additional details. We look forward to your email. 

Indeed! I would like to know the answer to @mikeyk101 question as well.

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