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Philbar71 · 12-05-2011, 08:41 PM

More than likely its piston slap. My dads 3100 Malibu did it in cold all the time. He also had a LS1 Camaro that sounded like a diesel in the cold because of piston slap.

12-05-2011, 08:41 PM	#4
Philbar71 GL Member Join Date: Jan 2010 Location: Suffolk, Virgina Posts: 609	More than likely its piston slap. My dads 3100 Malibu did it in cold all the time. He also had a LS1 Camaro that sounded like a diesel in the cold because of piston slap. __________________ 01 Alero 2.4 - Just minor mods...