rattling

So it's a been few months since this noise has been goin off everytime I start the engine and I don't know what it could be I'm thinking it could be the starter or maybe even the timing chain but that's probably rubbish I've searched for this sound problem and some say it's because the oil won't...

I have a stock Rubicon JLU and the tailgate has started rattling when I drive over bumps. It's driving me crazy. Anyone else have this problem? I had someone sit in the back to try to pinpoint the noise while I was driving and all we could tell is the noise is coming from the latch area...