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Duramax Chip 03-19-2008, 10:03 AM I will be going to the dealer for a state inspection. I have noticed references to several ECM flashes or updates in other threads. Do you have to ask for them by name or number, or will the dealer know which are available and needed when they hook up to the truck's computer? 06Dmaxpwr 03-19-2008, 11:28 AM They will know the latest upadates available! kgt 03-19-2008, 10:09 PM Don't update for the sake of updating, some updates are for just one type of concern and if you do not have that concern it can lead to a issue that you will be stuck with. LKELLY 03-22-2008, 10:30 AM Can we update the ecm ourselves with EFI live? I have OS 12604138 and there are not many modified tunes available. | ||