My 2001 Malibu V6 knocks for about the first 10 minutes when cold. I think it is called Piston Slap.
Can anyone please tell me more about the problems this creates and what can be done to minimize any damage.
I learned from somebody in a NG about piston slap just after our Malibu went out of warranty. Apparently it is something that occurs on 2001 and newer 3.1L V6 engines due to GM using skirted pistons.
I heard rumor that GM was extending the warranty to 6yr/100,000mi. Is this true?
I would like to learn more, especially how to make this engine last as long as possible, or if GM is doing anything about this problem.
Thank you for any insight you can provide! - Duane