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Old 04-13-2009, 02:08 PM   #7
67ChevyRedneck
Hittin E-Z Street on Mud Tires
 
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Join Date: Nov 2004
Location: Greenville, SC
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Re: Yukon knocking noise?

"Piston Slap" was supposedly eliminated by 2003. It shouldn't last more than 30 secs to a minute or so. 5 minutes is a long time. Mobil One really seems to quiet mine down in the winter and it's not audible in the summer in the warmer temps.
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Last edited by 67ChevyRedneck; 04-13-2009 at 02:10 PM.
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