Deadening a spoiler

[smashedz28 110]

Getting terrible rattles coming from a stock spoiler in a 2008 Grand Prix. What's the recommended treatment here? My first thought is taking it off and drilling a small hole to shoot expanding foam in. Unsure how the expanding foam really works and if it has any negatives.

[S.DeYoung 968]

Isnt the spoiler fiberglass? It probably makes noise mostly because of how it is attached. Maybe figure out a way to strengthen how it is attached to the trunk

[smashedz28 110]

It is Fiberglas but hollow inside.

[Sencheezy 689]

You have to attach it better to the trunk. I would suggest unbolting it, then adding like, some kind of soft weather proofing in that joint between the spoiler mounting feet and the trunk.

[Quentin Jarrell 671]

Unbolt it. Put a bead of caulk on the mounts. Let it cure and reattach

[ohio45113 24]

Unbolt it. Put a bead of caulk on the mounts. Let it cure and reattach

I used silicone but im sure this works too

[Fi 4 life 0]

Or just take it off completely like i did with my rear windshield wiper on my blazer?

[Sencheezy 689]

Or just take it off completely like i did with my rear windshield wiper on my blazer?

sure?

[smashedz28 110]

We thought about removing it. Looks like we'll take it off and see about making it more solid. Thank you guys!