Legal Notice Class Action Suit in CA against GMC for Engine Knock Noise

Received this in the mail yesterday from The Garden City Group INC:
Starts out:
TO: All California owners and lessees of 1999-2003 Chevrolet Silverados
equipped with 4.8 5.3 6.0 or 8.1 L engines
...
It has to do with that knock ping or slap noise on cold engines that goes away in a few seconds (I get it on mine). The suit claims GMC's unspoken "Engine Knock Noise Adj Program violates California's Secret Warranty law.
They have a web site: girardgibbs.com/silverado
--
"Their line is gone out through all the earth and their words to the end of
the world."
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.