Spoiler Rattle...04-08

I'm trying to get my spoiler to stop rattling when shutting/opening the trunk. I want it to sound more solid. Like its quality...And not made of plastic.

Has anyone tried using any of these foams from Home Depot?? I'm going to fill my spoiler up with foam....

Other thoughts,
I've bolted everything down. The only thing I can think of that's rattling is...the cable that goes to the brake light.

**More can relate to this....

It wont rattle if you turn it down

Let me explain more,

When you pop your trunk, you will hear it make a noise(burnmpt*). I want that noise, gone. The noise is also their when you shut the trunk...it sounds cheap. I want my car to sound solid. Like the doors.


*noise effect

What year/model GP is this? Popping the trunk open using the key or keyfob? Obviously one sound will be the trunk release solenoid.

Its a 2004 GT 1....Im going to snag a video of it and post it soon...