I just started having the click on my 14 370z at 36k miles. Trying to determine what route to take.
1) Call dealer to see if they will fix for free under the bulletin. Some on the forum said it may be covered under powertrain warranty, others said it isn't. Or even if there is a cost still have dealer fix it. Typically dealer warranties their work for 12 months.
2) Try to grease the axle shaft as per the bulletin
3) Go through the entire process of greasing and installing the kawasaki nut as juld0zer mentioned.
Here is a video of the clicking sound on my Z, rear driver side, when pressing gas pedal or taking foot off gas pedal. Since my z is a manual, i get two clicks as i shift into each gear and have to take foot of gas and apply it again. So does drive me a little crazy.
https://youtu.be/H4Jh3YqF-BQ
attaching the bulletin in case anyone needs it
NTB12-055f CLICKING NOISE FROM FRONT OR REAR AXLE
if i was to do it myself, wonder if i really need to get that molly grease from honda or if i can just use the permatex anti seize lubricant that AARONHL mentioned (i already have that in my garage).