I've got a 2007 6.7L mega 4X4 2500 and I am still trying to get over my own amazement since getting it in March of 2007. It is still stock in all essence and just beginning to search for nice simple upgrades such as air shocks on all 4. But before I can even think about that, some indicator on my EVIC started showing up - PERFORM SERVICE. It says clean the egr and egr cooler, and replace the CCIV Filter Element (Now that's a shocking price for an air filter!) Those requirements are so easy but what gets me is how to reset the indicator so it doesn't show-up again in the next 65K miles. Its not in the owner's manual unless I am just really very blind that I passed the short info through my reading glasses. Anybody got a clue???? Really annoying indicator everytime I start my truck!!! H E L P ! ! !