Thread: C-7 Engine Noise
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Old 02-24-2014, 12:17 PM   #2
MMC

 
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Drives: CGM 2SS/RS, 1987 & 2014 Silverado
Join Date: Oct 2010
Location: Spencerport, NY
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Just a thought, may be the high pressure mechanical fuel pump for the direct inject fuel system.
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