I have a 1997 chevrolet blazer and while I was driving today there was a loud clanking noise. Started off not so loud and then it got really loud. Eventually while turning a corner it felt like the whole bottom collapsed. As I drove to the side of the road it felt like I was driving over huge boulders. I parked and looked under truck and nothing was dragging, but as I was parking my truck up hill on the right side of the road the whole truck was shaking and banging so bad also like I was driving over huge boulders that we couldn't even barely get it to move. Once put in park it started to roll backwards, so we put the emergency break on.