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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

High pitched sound - what is it?

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Old June 8th, 2022 | 10:18 AM
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Default High pitched sound - what is it?
Hi, I have a 2016 Suburban with ~93k miles. Recently, a noise started with the vehicle and need some help determining what the noise is.

Here is a link to the video:
https://youtu.be/rJjAbaGnKas

Thanks for any input here.
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Old June 9th, 2022 | 3:56 PM
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Not much activity on this site

Could be a belt. Was the AC on?
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Old June 9th, 2022 | 4:03 PM
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Originally Posted by UrbanBurban
Not much activity on this site

Could be a belt. Was the AC on?
Yes AC was on.
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Old June 9th, 2022 | 4:09 PM
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Could be the serpentine or a tensioner. Just spit-ballin' here.
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Old June 9th, 2022 | 4:25 PM
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Ya I am leaning that way as well. Appreciate the input. Hopefully will get to deal with it soon. Intermittent at this point.
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Old June 9th, 2022 | 4:59 PM
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Belt or pulley noise would do it when stopped and idling. HIgh pitched noise when driving could be the brake pad wear sensors letting you know it's time for new pads.
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Old June 9th, 2022 | 6:35 PM
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…we are due for brakes as well. I have not heard the noise when idling so thanks for that thought.
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Old June 22nd, 2022 | 10:55 AM
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Originally Posted by KX5
…we are due for brakes as well. I have not heard the noise when idling so thanks for that thought.
Following up. I switched out the rotors and brake pads and the noise has disappeared.
Thanks again for your help here.
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