I give up...
The passenger seat in my TJ squeaks when going over bumps. Not just a little bit but a lot of squeak. Its loud enough to be heard and annoying over M/T's at 55mph and the radio on full blast.
I've sprayed every joint with lubes galore (JB80, WD40, Lithium grease, Marvels Mystery Oil), and it just makes the cab stink and the squeak does not stop. The only way to stop it is to push on the seat back with your elbow, put alot of weight on the seat (20lbs plus, or have a passenger) or to fold the seat forward.
If anyone knows where this noisy little bugger lives, please let me know. Wherever it is, its not obvious...