Rattling doors on bumps

[interbrood]

When i go over bumps with my 2004 ext the drivers door and back door on same side seem to rattle as if they are loose.It doesn't seem to do this on the right side.The carproof report said this truck has never been accidented.Anyone have any ideas?
Thanks

[maxwedge]

Make sure the door and tailgate close properly, have someone ride in the rear to try and pinpoint the source, there is no way that we can pinpoit this without driving and checking these things onsite. MY 2002 does not exhibit this problem at 105k.

[interbrood]

No need to verify the source,with my arm on my door while going over bumps i can feel the door moving(shaking)up and down.same as the back one when i reach behind and hold my hand on the door.Anyone else have this problem?
thanks

[maxwedge]

If you look at the door latch and striker unless one component is loose, there is no way the door can be moved vertically to cause this, now if the strikers are misadjusted horizontly the door could be loose against the opening, look at these issues.