This just happened to my co-worker as well, I had her describe the sounds her truck was making and told her it sounded like the shackle. She didn't believe me so I went out and took a look, sure enough, it was the shackle. I took a look at her passenger side too and that's on its way to breaking too. She's got a 97 Ram 1500 reg can with the 360, 143k. I