When my Blazer was hit in front of my house it was totaled. It was winter and I was in scoop, so in a rush I used the insurance money to purchase a 2002 GP GTP (it was the one stolen). The 02 GTP looked ok on the outside (no rust), I failed to look under the car. when I did I found it pretty rusty and it needed new break lines. So I know what you mean!