There's a problem with rattling for some Stingers near the tailgate area and a technical service bulletin was released in December. The issue number is SA322 and apparently the first TSB fix didn't really work. So now there's a second TSB issued since the first attempt didn't work. Can't seem to get my hands on that document to post here, but it's a good idea to bring your Stinger in for a checkup if you hear rattling.