Newbie question(s). I have a child seat blocking my rear view and so I'm very interested in this mod. Seems the first post is directed at folks that have somewhat played with their trcuk's settings already. I have not. Questions: What the heck is FCW and how do I know if I have it? Is it front collision warning? My truck slams on its brakes automatically when approaching an object too fast, so if thats what FCW means, I should have it...right? What is ACC? What is a BCM? These seem like key concepts to understand before ordering anything and I've looked through the thread and nobody is breaking it down. Lots of acronyms in these messages. Acronym list availablle? It appears I need a tool of some type to change computer settings as well. What tool or reader? So although the first post is detailed, I feel like I'm butting in and eavesdropping on a discussion that started before I got there and wasn't invited to.