I have done a little research on this website but have not quite found what i was looking for. I have had 2 very similar incidents with my truck within the last month, that i have not had at all until now. I have a 1996 2500 club cab long bed with stock suspension. The other day I was driving south on the grape vine at about 65-70mph when I hit a pothole in the road. Normally this doesnt bother me, but my truck began to shake violently and it took all i could to control it, and move over to the right lane where I slowed to about 35mph when the truck finally stopped shaking. This has happened to me one other time on a local county road, hit a bump, exact same thing. I am now truely scared to take this pickup on any long trips, and I have considered selling it. Does anyone have any idea what this might be?