Okay this fix is quite easy, I could only take pictures of the climate control unit itself because I had a spare, but maybe you could find a tutorial on how to take out the radio which is the first part of this tutorial.
Okay first you need to pry off your center console, to do so you:
1) Unscrew the two screws in the felt area under the ash tray
2) Pull parking brake
3) Remove trim around the gear selector
4) Start by carefully prying off the wood section in front of the arm rest
5) As soon as you have the bottom half lifted pull the panel towards you and it should pop off. CAREFUL OF CRACKING THE UNIT!!
6) Remove the one harness that connects the cigarette lighter and ash try light. Now would be a good time to replace the ring light that lights up the cigarette lighter or the ash try light. Also would be a good time to polish this piece, use rubbing compound and Maguire’s Scratch X. Not to many people are aware that these panels have a plastic coating over the wood, so the only way to get a nice shine is to polish it like the head liights.
7) Carefully place this panel somewhere you won't crack it or scratch it. Its real wood, (LS Models).
Okay Second, Radio removal
1) Make sure you have your radio code if it's a stock unit
2) look under the radio, you'll see two Philips screws that are #10 bolts (I think) make sure you get a Philips head that’s big enough and long enough to give you enough leverage to remove the bolts, or else you should bust out your socket set and remove the bolts.
3) Carefully pull the radio out and disconnect the harness and Antenna wire
Third, is the actual center vent removal you made it this far, great! Not that much more to go... almost there.....
1) Now that the radio is out of the way, you should look up and see two regular Phillips screws. These hold the center vent in. Unscrew those
2) CAREFULLY pry out the center vent. It's old and plastic, prone to cracking, be warned. There are actually a number of ways I discovered on how to pry out the vent, you can start by pushing it out from the bottom are inside of the console, and getting a putty knife or something flat and pry out the sides as well as the top.
Fourth, now we have the center vent out, we have to remove the climate control unit from the vent.
1) Unscrew the two top screws on the climate control unit that screws it into the center vent
2) Remove the plastic pins that clips onto the metal bracket
3) Now you have the unit apart from the vent.
Last thing to do, remove the fan from this box, now that you have the climate control unit out, you might as well think about replacing the bulbs for the controls, they will go out at some point. If you want to do this, pick up a set of them at the dealer and install them, make sure you clean the contacts with alcohol and use a small standard screw driver to remove and install the bulbs. Also this is a good time to pick up some epoxy to help re-enforce the center vents to help percent those nasty common cracks we all get. Just apply this to the trim around the vents and it should harden and then cross your fingers. Moving on:
1) If you look at the unit from the top, on the left you'll see this metal cylinder thing that looks like this:
Remove the left end screws on this bracket
2) Now unplug the fan unit from the Climate control and pull the fan out from the tubing
This is how it should look after the fan removal
3) Now remove the two remaining screws from the top of the fan unit. Be careful not to strip the screws, make sure your Phillips head is big enough. Also be careful a few nuts are going to fall out, those were holding those screws in.
4) After removing the remaining screws you can go ahead and take off the metal cover of the fan and separate the unit in four
a) Fan cover
b) Fan blade
c) Fan Base
d) Fan mount
Now the fun stuff. Get your can of air and silicone spray handy.
1) Blow all dust away from this unit, you might also want to blow the dust out from the vent area and tubing on the control unit
2) Spray silicone on the mental area of the fan base, Fan Cover and the tips of the fan itself.
Now you’re done! Wrap everything up and install it. And the noise should be gone. It's been a year since I did mine and no buzzing coming from my vents. Sorry this was really mediocre, but hope it helps --=Keith