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Old 04-07-2009, 10:48 AM   #1
Strodder
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Join Date: Aug 2008
Location: Hesperia, Ca
Posts: 4,499
2006 Engine noise on acceleration

I just bought a 2006 Silverado 2500HD with a 6.0 engine. I didn't notice it when I test drove it, but on acceleration it knocks under load. I searched the web and found there is a piston slap caused by carbon. But that knocks while idling, not on acceleration. Has anybody had this problem? It doesn't seem like a gas ping. I put high test gas in it to make sure. Any input here?
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