I recently purchased a 2015 chevy silverado 5.3 LT. I can't believe with only 5k miles on it I'm already having issues. When I'm driving from 20-40mph and am decelerating it clunks when getting in and out of gears. Sometimes louder when I'm slowing down and than suddenly step on the gas. It makes a solid clunking noise, sometimes worse than others. Almost can feel like I'm getting lightly rear-ended at times. Anyways I'm extremely pissed off and wondering if anyone had similar issues and if it's a simple fix. Thanks!