I have a 93 f150 4x4. When going over road bumps, I get a clanging sound from back, underneath the truck. When I step on the brake, the noise stops. Is there some sort of anti-rattle clip on the back brakes that I am missing?

 

No anti-rattle clips, but try crawling under the truck and checking for loose parts. Make sure the spare tire is tight. If you can't find anything, it won't hurt to take apart the rear brakes and make sure you don't have a broken spring.