Well after a couple weeks of padding various elements in the rear of my Z to stop buzzing, and with no apparent success, I came to the conclusion something must be stuck inside the hatch (a bolt) and vibrating due to exhaust resonance at certain RPM. It was definitely a metal on metal buzz from the upper, passenger rear side and I couldn't solve it.

I swing by the body shop and ask if they dropped anything down there while installing my spoiler a few months back and they said they indeed dropped a bolt down the install hole, but couldn't get it out by shaking the hatch or with a long pole magnet. They didn't think it would cause any issues, but it is causing me a goddarned headdache everyday for months b/c the buzzing is annoying. It makes my Z sound like a toy, rather than sportscar.

Anyone have any ideas how to remove this? Their long (antenna-like) magnet couldnt get it out, shaking the hatch doesn't seem to budge it, slamming the hatch multiple times does not dislodge it, using strong magnets where I think the bolt is and trying to drag it to a hole doesn't work, etc.

It is stuck in the interior metals of the hatch! Is my best bet to remove the hatch and turn it upside down and try to roll it out? This would be a two person job, but I think its my only option?! How do I go about removing the hatch? I looked at it quickly this morning and couldn't figure it out. It looks like I can unbolt the airstrut things from the rear, but the top bolts don't look like bolts at all. I'm assuming I need some sort of special tool to remove these or something? Or did I see incorrectly?

I NEED TO GET THIS BOLT OUT. ANY HELP IS HIGHLY APPRECIATED! Ahhhhhhh!

 

Go buy the magnet pole you're talking about. they probably didn't spend alot of time trying to fish it out. Shake the hatch until you can figure out the general area of screw/bolt and start fishing. They make magnet poles that are hinged for hard to reach places.

 

Any clue where I can buy one? It needs to be pretty long (i.e. about 3-4 feet). The bolt fell toward the front of the hatch. The problem with locating is that it doesnt seem to budge when you shake the hatch. It seems to be lodged, but the resonance of the exhaust moves it just slightly enough to make it buzzzzzzzzzzzzzzzzzzzzzzzz like a beyotch.

 

Had the same thing happen when I put my wing on.
What I did was slowly open and close the hatch untill I found out where the bolt was then I took a microfiber cloth and wraped it around a magnet put the magnet to the outside of where the bolt was and slid it to the hole and pulled it out with some needlenose pliers.

 

I'll give it another shot. I already took an industrial strength block magnet and tried to do the same thing. The problem is I think the bolt is "lodged" somewhere between two sheets of metal. It doesn't make a sound when opening closing the hatch, but the exhaust resonance/vibration is enough to move either a) the metal or b) the bolt itself and cause the buzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz, buzzzzzzzzzzzzzzzzz, buzzzzzzzzz sound with acceleration.

Anyone know how to remove the hatch?!

 

Not sure if this would even be feasible, but have you considered maybe filling you hatch with a lightweight expanding insulation? Your focus is on getting the bolt out, which make sense. But if it turns out to be impossible to get it out, perhaps another alternative would be to shoot enough insulation inside of your hatch to prevent the bolt from moving around. I'm thinking like that "Great Stuff" stuff you shoot into crevices around the home to seal things up. Just a thought.

 

that is exactly what i did. i dropped a bolt intsalling my spoiler and it eventually traveled far up the hatch . i drilled a very small hole where i thought the bolt was and used 3m expanding foam. problem solved. it's not possible to get the bolt out. i tried for hours with magnets to pull it out but the ribbing on the trunk lid is way to curved.

 

Cool. I have an idea where it is, so I may drill the hole and try to get it out. Of course I already smashed my back window trying to get this thing out, so maybe I'll even try to live with it, or let someone else do it. Hah. $425 to replace the window makes for one expensive bolt.