Why does my ford ranger squeak when I hit bumps?

Recently when I have hit bumps with my 2007 Ford ranger it has made a squeaking noise. It does not make it when I hit potholes, just little bumps. I don't hear the noise when I try to push down on the truck. Any ideas on what the noise could be, and how I could fix it?

My guess would be that one of your springs is squeaking.

It may be the stabilizer bushings. They are easy to replace and don't cost very much.