rattling sound when cold [Archive] - GrandAmGT.com Forum


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02-12-2007, 11:17 PM
When i run my GA and it hasn't warmed up yet I can hear a clunking kind of rattle sound that sounds like it might be coming from the wheel well area. It goes away when the car warms up. Anyone have any idea what might me causing this and is there a way to stop it?

02-12-2007, 11:55 PM
Going to abbirivate every post after this one.

This is called piston slap. There's a solution but its really involved and requires replacing all the pistons with coated-skirt pieces. ALOT of money and effort to fix a nuisance problem. Not worth it.

GM calls it "piston-slap", some will call it "lifter-tick". Many engines (including my old 3100) have gone for 80k+ miles making this noise with no ill effects.

02-13-2007, 09:18 AM
mine did that at 8,000km all new piston at 14,500km......warranty, well for me it was.

heres a thread. http://www.grandamgt.com/forum/showthread.php?t=55902