Well, after hoping things would get better, the piston slap in my $38000 2002 LS1 is still knocking. Not just at startup (usually dont hear it) but when its warm. Just had the oil analyzed and the report was "Excessive Steel" found. It has 24000 miles and the oil have been changed every 3000 miles. Im going to try my dealer next and I bet with no luck. May have to have a borescope done to look for damage. Anyone dealt with this problem yet???