Yeah, I just hit 27k and I notice a slight rattle underneath and also something banging around on the left side in the rear when I go over bumps. I am certain it is coming from under the truck as I have checked and secured my spare and any other loose items in the back. I think it must be my exhault or the heat sheilds. I hope to creep under there soon and get a fix on what is causing the noise. Its very annoying.

Bart