High pitch noise at 35mph when cold

[Justin Shuma]

I recently purchased a 2018 gmc 2500 with the duramax. It has about 126,000 miles.  After it sits for at least an hour there is a high pitched squeal around 35mph. It gets higher and lower when pressing or taking off the gas pedal. Video attached. It goes away after the first two miles or so. I have had two shops look at it and neither could figure out what it is. Won’t let me upload the full video. Link to it on YouTube here. 

 

[GMCustomerService]

On 11/19/2022 at 11:45 AM, Justin Shuma said:

I recently purchased a 2018 gmc 2500 with the duramax. It has about 126,000 miles.  After it sits for at least an hour there is a high pitched squeal around 35mph. It gets higher and lower when pressing or taking off the gas pedal. Video attached. It goes away after the first two miles or so. I have had two shops look at it and neither could figure out what it is. Won’t let me upload the full video. Link to it on YouTube here. 

 

IMG_8351.MOV

This is certainly not what we like to hear, Justin Shuma.  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 2018 GMC 2500 Duramax. To do so, please send an email to [email protected] with ATTN: Justin Shuma/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.
 
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