2000 silverado "supercharger" whine - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-06-2014, 08:40 PM   #1
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Default 2000 silverado "supercharger" whine

At an idle, under acceleration, any time the pickup is started, I have a whine. I've thought power steering pump, but not 100% sure. Anyone else had this problem? I have flowmaster super 44s on it, and the whine is almost louder than the exhaust and I can not stand it.
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Old 05-06-2014, 09:06 PM   #2
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Is the power steering fluid full? Does the sound change when wheel is turned or when rpms change? You other thread was removed due to it being posted in wrong section.
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Old 05-06-2014, 09:09 PM   #3
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Yes, the fluid is full, sound doesn't change, just gets louder under acceleration. I apologize for the wrong section. Pretty new to the forum.
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Old 05-06-2014, 09:13 PM   #4
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Its ok. Usually if its the power steering pump it will change especially when the wheel is turned all the way to either side. You could try taking the belt off and see if it still makes the noise.
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Old 05-06-2014, 09:18 PM   #5
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Just checked it. All the way to the stops, it goes from the loud supercharger whine to a lower pitched, kinda "grinding" noise.
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Old 05-07-2014, 10:00 AM   #6
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Bearings in the power steering pump are shot.
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Old 05-07-2014, 10:01 AM   #7
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Noise gone when the belt is removed?
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Old 05-07-2014, 10:25 AM   #8
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I didn't remove the belt. I'm unsure how.
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Old 05-07-2014, 11:38 AM   #9
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Don't need to remove the belt. Now that we know the whining increases and sounds worse when turning the steering to the stops we know the problem is the power steering pump.
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Old 05-07-2014, 12:03 PM   #10
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Anything I can do other then getting a need pump? I've heard Lucas, granny fluid, etc. just haven't tried anything and I'm tired of the whine
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