'97 t100 3.4L auto 4x4:

Usually when driving and hit a shallow 'pot hole' i hear a what sounds like a thin metal hitting thin metal. I've checked under the truck and I don't see anything that stand out.

This hasn't affected driveability, but I think something is going bad.

Is there a way to replicate the occurance with the front end raised ?

Open to any and all suggestions/ideas !