2012 Nissan Titan Pro 4x with 6 inch pro comp lift kit. Has 1500 miles on it and I have a loud rattling noise when I approach 20 miles per hour or make a turn in either dirrection. I am thinking its some kind of a heat shield but not sure which one consideing Nissan puts about 300 on this truck. Anyone else having this issue? Taking it to the dealer in the morning. Thanks