On mine I have/had plastic squeaking noises coming from the right strut cover. It's the large plastic piece with the round turrent shape. If I grab the piece any try to move it back and forth, then it would make the noise. It doesn't appear to be loose, but I guess it's loose enough to make those sounds.

The drivers side cover doesn't make a sound.

Now that the weather has gone from cold to hot in the Northeast, the sound has mostly faded away probably due to the plastic expanding.

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Pete
2008 Meteor Grey CS, PASM, Chrono, Sport Seats, Sport Shifter, Sport steering wheel, Xenon, Fire Extinguisher, Auto Climate and clear bra!
2007 Blue Slate Infiniti G35s 6-speed