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2014 Chevy Silverado
Platform: Truck, GMT 400, 800, & 900

Strange Noise?

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Old Oct 15, 2012 | 8:45 PM
  #11  
hockemap's Avatar
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That makes sense.
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Old Oct 16, 2012 | 6:34 AM
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Could it be something between the throttle body and MAF maybe a crack in the bellows,will it do it if you disconnect the brake booster line?
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Old Oct 16, 2012 | 4:52 PM
  #13  
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Well the plot thickens...The noise disappeared this AM on the way to work. Pre-ign is still present. already tried the booster line. I guess at this point I'll just drive until it takes a dump or shows a code???

Regards
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Old Oct 16, 2012 | 7:28 PM
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crazy,maybe there not related and the knock sensor is bad but not throwing a code
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Old Oct 17, 2012 | 5:36 PM
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I have personally never seen a knock sensor go bad that did'nt code. I went to Advance Auto and scanned it and there were no codes,real or phantom...

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