Its a GM thing. Just ask any guy looking for a Duramax from 2000-2010. First thing to check when you look at one on a lot or a private seller is the brake lines, rocker panels, fenderwells,frame. Northern born trucks are worse but I've seen them just as bad on southern trucks that seldom see road melt agents. I know of 3 replaced in the last year. Go stainless and never look back.
