My new Denali HD will be here next week. I know there isn't much out yet aftermarket wise, but I have still been doing alot of reading and research about mods and anything diesel. Today I came across the Magnuson Moss Warranty Act. To make it brief, it basically states that aftermarket parts can not void your warranty and it is mandated by federal law. The only way your warranty service can be denied is if there is direct proof that the aftermarket part is what caused the problem. This is the first I've heard about this so I may be missing the entire picture on this. But people say pretty much anything voids your warranty now days. I'm just curious to see if anyone else has heard of this and what their opinion on it is. I guess I'm just anxious to get my truck so any chance I have to talk about it, I love. But if this Warranty Act is legit then I'd love to see my brand new Denali with an 8'' lift rollin 38s and 20s.. Any input would be great guys.. Thanks!!