I find that something under the passenger seat really rattles over rough road when there is no one sitting in it but it goes away if I push down on it. Does anyone have a diagram of the underside of the seat where they can show me what I need to do to correct this? I can't seem to locate where it's coming from.

 

Thanks for all the replies...I appreciate it
Anywho....I found the source of the rattle...I took off the plastic cover on the front of the rail that the passenger seat rides on and underneath it was the bolt that holds the seat in place. It was loose so I took a socket wrench and tightened it...no more rattle. Yay me!