I have a 2015 2D that I installed aftermarket wheels and tires on. They are 33" and after several weeks I started getting a very annoying rattle! The spare tire carrier, and the tailgate hinges seemed snug. I opened the tailgate, and tried to lift it up and down. I got just a very small amount of play, but I decided to adjust the black plastic piece below the striker on the door jam. There is two bolts that let you adjust the bracket. It took me three times, but the noise is gone!!!!

 

In which direction did you adjust the black stabilizer? I adjusted mine to the front of the car and it did not solve the problem.

 

My mistake, I adjusted it towards the rear so that the tailgate is more snug in the stabilizer. Should I also do a tailgate striker adjustment?

 

I know this is an old thread, but this worked on my 2017 JK.

Had an annoying rattle and tried removing the storage tray, and then the jack with no love.

Moved the black plastic piece as far forward (toward the front of the jeep) as it would move and tightened it down.
Rattle gone, now I can hear all the quieter rattles lol. Easy fix.

Thanks

Craig