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Knock in front dash

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Old Oct 29, 2015 | 06:00 AM
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Knock in front dash

Yesterday my front passenger and i noticed a front knock eminating from the front passenger side dash. It seems almost totally random and it would do it from 5 to 30 seconds. It varies in loudness but is always noticable nd the ac was on. does anyone happen to know what this mayne?
 
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Old Oct 29, 2015 | 09:24 AM
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Does it stop with the HVAC off? Does it change if you change temperatures on the HVAC? My guess would be blend door.
 
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Old Oct 29, 2015 | 04:11 PM
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Its not as prevalent with the hvac off but every now and again it will with it off
 
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Old Oct 29, 2015 | 05:23 PM
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Does it do that when you are stopping / starting or turning quickly? Could still be the door flopping around. What about if you change temp?
 
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Old Oct 29, 2015 | 10:23 PM
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It happens with the truck on but it can be in park and not in motion with the hvac off or on
 
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Old Oct 30, 2015 | 04:42 AM
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Well then that's not it.
 
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