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Old 08-13-2013, 05:04 PM   #1  
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Default Rumble from blower motor on high speed

2003 Chevy Truck Astro Van AWD V6-4.3L VIN X Automatic Transmission

With the A/C on it sounds normal, yet when you select HIGH it gets much louder and a low - rumble sound comes from the passenger side/glove box area.

The A/C has worked fine for years and never done this before until out of the blue a week or two ago.
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Old 08-13-2013, 05:29 PM   #2  
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Sounds like the squirrel cage is off balance.
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