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Squealing when accelerating at low speeds

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Old July 28th, 2021, 4:40 PM
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Default Squealing when accelerating at low speeds

02 Silverado 1500HD 4x4 automatic
There is a squeal from the engine compartment when accelerating at low speeds (25-45 range). If I let off the gas, the sound stops. If I press the pedal harder, the sound stops. Of I hit 50mph, the sound stops. It started as a soft squeal, but has gotten significantly louder over the last 2 days. Any help is greatly appreciated.
Old July 29th, 2021, 10:52 AM
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Welcome from Florida. I would check your serpentine belt and also the tensioner and idler pulleys.
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chem_man (July 29th, 2021)
Old July 29th, 2021, 3:07 PM
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Don't just check belt deflection. Clean them. If they're dirty they will squeek (and and also deteriorate much faster)
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