I HAVE A 2005 2500 HD CREW WITH 56,000 MILES I HAVE OWNED IT A MONTH, I TOOK IT TO THE DEALER SHIP WHERE I BOUGHT IT, THEY CAN'T TELL ME WHY IT SMELL LIKE SULFER, IT IS A STOCK TRUCK AND NONE OF THE OTHER TRUCKS I HAVE LOOKED AT HAVE THIS SULFER SMELL. I DONT KNOW IF ANW THING IS WRONG WITH IT OR NOT NONE OF THE WARNING LIGHTS ARE ON AND THERE ARE NO CODES