There is a factory service bulletin (23-024-08) about lubing the door latches and strikers.
It's your Transfer case shifter knocking. Go here and fix it. http://www.4x4xplor.com/T-CaseTSB.html It's an easy fix and only takes about a half hour. Good luck and let me know if that was it ;)
Rattle.
Nothing! It;s just a cool little costume.
Input shaft bearing is probably bad, especially if it is noisy in every gear but 4th
Heat shield on your exhaust system?
From what I can tell, the rattle is most likely coming from your alternator, Take It In!
I had the same rattle when I hit bumps on my new rubicon. It turned out to be my door latch wasn't centered. Take turns going over speed bumps with different doors open. When it stops rattling with a certain open door, that latch is the culprit. My dealer fixed it in an hour. It's under warranty.
Please ask this question again describing the noise (clunk/rattle/squeak/rub/rumble/groan/usw.) and type of vehicle (year/make/model/notcolor.)
I would dig them out. They may not be a issue other than an annoying noise as they rattle around but they may get into something and cause a problem.
the substrate inside is breaking up,your cat-con is shot!!
The possessive form for "the rattle of the snake" is the snake's rattle.
Because there is something wrong with the accelerator. Is the rattle coming from the tire? It could be that you just broke your wheel studs and your tire is hardly holding on! Do not drive this car!!!