I have searched the forums and havent found an answer here or in the maintainence section so here goes. How will GMC/Chevy go about cleaning these buggers????????? I know about the regen modes and mainly it being self sufficient, but from waht I read they will require periodical off the truck cleaning. Caterpillar from what I read will have an exchange program until they get machines in dealerships (ie read machines 10000+). I do know federal epa says that the filter must not require off the truck maintenance for at least 100,000 miles or more (in light duty applications. HOwever, w/some hot shot guys or guys hauling rv's who run 100000 miles a year a dpf cleaning isnt so far off. OR I imagine somone runs off road fuel (higher sulfer quicker clogging), or ash 2 stroke oil etc would maybe require a quicker cleaning that jsut plain regens cant handle by itself. My question to the cat dealer was these this cost so darn much waht IF I lived in flordia and I got one exchanged and I got an exchanged one from say MINN or new york etc and it rusted away. The dealers response was UH, well, they are expensive due to precious metals used to make them, and they should be inspected for rust etc before they are sent out to dealerships. I called 2 local dealerships for giggles this afternoon and said ok already to place an order for a new truck , but first how are you gonna clean my dpf when I need maintenance. Both dealerships were what do who , waht, clean your what???? After explaining it to them (both dealers seemed less then knowledgable) that these new trucks have soot traps and will potentially require some maintenace, how will they handle it (have machines, stock exchanges etc etc) they transfered me into the maintenace dept who were again less then helpful. Like i said the caterpillar off vehicle cleaning machine was reported to cost around 10,000 dollars, I cant imagine every chevy dealer having one. Any ideas?