I have a '16 AT with 9K miles. The only rattle I have is the simple armrest release button. The dealership says there is no fix and another replacement would just do the same. Not a big deal. As for the hatch not opening (without 2 button presses) you'll have to deal with it. I've added 2 nickels to each spring-boot and that worked for a week. I then removed the nickels and glued a rubber washer to the frame to build up the little springs at contact (another member said it worked for him). It worked for 2 days. I've also removed the 5 lb weight in the hatch (under plastic cover). In the end, there really is no fix from Nissan. This has been an issue since the 2009 model. I have a feeling the trunk roll-cover may play a role in keeping the hatch down. I've made my piece with it. Overall I'm happy with the lack of rattles/issues.

How did the dealership fix the squeaking rear bumper? My dealership said there was nothing they could do.

Had the same issue with my shifter at high RPM. So annoying. Took it to the dealership. Lucky for me the Nissan Tech also owns a Nismo 370z. Turns out it was a spring inside the shifter and it wasn't completely tight. Took apart the shifter and boot, tightened it, done! No rattle!

On my car i thought i had a hatch rattle too, i spent a ton of time trying fix it but nothing would work, then finally i figured out that it was the GPS wires that were buzzing and sound was traveling back and bouncing, once you get it to buzz, press on the headliner bump where the antena is and see if it stops.