i have a 2007 mega-cab with 5.9. it has 165,000 miles. just developed a front end rattle, but it is not a heavy metal sound. it sounds like thin metal. took it to shop and we cant figure it out. any advise would be greatly appreciated. thank you

 

Also the front end does not seem to have any steering play and the truck drives straight and does not knock when turning or over any rough roads.