2010 Suburban Whistle/Boiling Kettle Noise Engine Area

chocostar

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Hi, I noticed an intermittent whistling/boiling kettle noise from the engine compartment. This usually happens after a few minutes of driving and is mostly initiated by pressing on the gas pedal. The noise also happens when I rev the vehicle.

Please find the videos here:

Suburban Whistle 1

Suburban Whistle 2

I've tried spraying the belts with water - it doesn't help the issue

I tried listening to the alternator pulley with a long screwdriver - no issues

I had the serpentine belt, tensioner, and idler pulley replaced a year back

Thank you in advance
 

zora

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Use a section of rubber hose to act as a stethoscope to pinpoint the source of the noise.
 
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