2008 Dodge Ram 2500 Pickup Owner Manual Diesel - Page 428

426 MAINTAINING YOUR VEHICLE To achieve these emission standards, your vehicle is equipped with a state of the art engine and exhaust system. The engine and exhaust aftertreatment system work together to achieve the EPA Heavy Duty Diesel Engine Emissions Standards. These systems are seamlessly integrated into your vehicle and managed by the Cummins௡ 6.7L engine Powertrain Control Module (PCM). The PCM manages engine combustion to allow the exhaust system's catalyst to trap and burn Particulate Matter (PM) pollutants, with no input or interaction on your part. Additionally, the overhead console in your vehicle has the ability to alert you to additional maintenance required on your truck or engine. Refer to the following messages that may be displayed on your Electronic Vehicle Information Center (EVIC): WARNING! A hot exhaust system can start a fire if you park over materials that can burn. Such materials might be grass or leaves coming into contact with your exhaust system. Do not park or operate your vehicle in areas where your exhaust system can contact anything that can burn. Perform Service The 6.7L Cummins௡ engine utilizes a Closed Crankcase Ventilation (CCV) system, EGR valve and an EGR cooler. This system filters and recycles gasses produced in the crankcase during the normal combustion process. "Perform Service" will be displayed on the overhead console of your vehicle if the CCV filter, EGR valve and EGR cooler are due for required maintenance. The CCV filter is