2021 Sierra 1500 making noise when accelerating at 2000 rpm

[brianravelo]

Hello Just bought a sierra 1500 used 2021.  It is making noise when accelerating around 2000 rpm.  Any one know what it could be?

[Bikerjon]

1 minute ago, brianravelo said:

Hello Just bought a sierra 1500 used 2021.  It is making noise when accelerating around 2000 rpm.  Any one know what it could be?

What kind of noise? How many miles and what engine do you have?

[brianravelo]

2021 GMC Denali 1500 5.3 with 32k.  When driving if you accelerate  hard at 1500 to 2000 rpm the engine make a weird whining noise like the car losses a little power.  I was viewing links on some forums and found one guy with similar noise.  
 

the noise only happen when accelerating hard and not all the time.  No noise at idle.  Everything on the tuck is perfect.  Think of a rusty screw noise.  

[brianravelo]

https://youtu.be/vITYIsuqTP0?si=CQvdJkDmHbHtAlhM

 

this guy posted the exact noise 

[Bikerjon]

1 hour ago, brianravelo said:

https://youtu.be/vITYIsuqTP0?si=CQvdJkDmHbHtAlhM

 

this guy posted the exact noise 

The video sounds like a squeaky belt. Could be the belt and/or idler pulley. 32k is not many miles. Your truck should still be under warranty.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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[brianravelo]

Why would it squeak only when accelerating and not when idling.  When idling, I have revved the ****** out of it, and it purrs.  The car sounds perfect.  This only happens when accelerating and again not all the time.

[forest]

Transmission.

[GMCustomerService]

On 11/22/2023 at 8:03 PM, brianravelo said:

Hello Just bought a sierra 1500 used 2021.  It is making noise when accelerating around 2000 rpm.  Any one know what it could be?

This is certainly not what we like to hear, brianravelo.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2021 GMC Sierra. To do so, please send an email to [email protected] with ATTN: brianravelo/GM Trucks in the subject line.

Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s Privacy Policy, please visit https://www.gm.com/privacy-statement.html. The information you provide may be monitored and recorded and is subject to the GM Privacy Statement.
 
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[Mshawn]

On 11/22/2023 at 10:16 PM, brianravelo said:

Why would it squeak only when accelerating and not when idling.  When idling, I have revved the ****** out of it, and it purrs.  The car sounds perfect.  This only happens when accelerating and again not all the time.

The accessories are not under a load when it is in park. There have been people will report a whining noise when accelerating and it was the transmission. I know there is a TSB on whining noise from 5.3 engines in these trucks and they replace a belt and idles pulley is the cure.

[brianravelo]

Mshawn ... thank you for the advise makes sense to me.  Just took it to GMC service lets see where we go.