The issue of “piston slap” is finally getting some action in court this week. The defect occurred in some GM GenIII V8s built between 1999-2002 and causes a ticking or knocking sound (usually during ...
Q: I have a 2003 Pontiac Vibe with 135,000 miles on it. This past winter it would knock for a minute or so on a cold start. A GM tech told me that it has a cold piston slap and it will go for a long ...