Advice on how to stop the trunk rattling

[BigMikeQ 10+ year member]

It's mainly the trunk lid. I applied dynamat twice and foam and it only helped about 50%. Any ideas on how to make the trunk lid stop rattling.

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[rtillaree 10+ year member]

less deebeez...

 

[ThatChevyGuy 5,000+ posts]

hey 50% is pretty good...

 

[NASTY08IMPALA 5,000+ posts]

Change box to subs forward port side ..helps some but u will never get rid of trunk rattle i got 3 layers and foam as well..nature of the beast

 

[NASTY08IMPALA 5,000+ posts]

Or turn box around and seal off trunk

 

[CJL 10+ year member]

What vehicle?

 

[skylineTT 10+ year member]

deaden the license plate if it hasn't been already. Also apply some extra weather stripping. Other than that, Idk what would rattle.

 

[inferno1985 10+ year member]

most trunk lids have 2 layers there the actual trunk itself and then has somekind of brace that is welded to the underside of it. my buddy had some serious sounds in his trunk and layered it like hell and foamed it. and still rattled like crazy. he ended up taking all the mat off the lid and spot welding the 2 layers in a few inch increments and then layering it again with dynomat and had the trunk lid repainted and made a hell of a difference. but he was a welder and sprayed his own lid. but thats bout the only way to really calm it down without sealing off the trunk.

 

[FamousMassacre 10+ year member]

What car do you have?

 

[VWBobby 10+ year member]

Also try to deaden or insulate the areas that the lid contacts the trunk opening. Sometimes you can replace the rubber feet if they are missing. Most older cars have adjustable trunk lid feet that have rubber cups on them. Try adjusting the trunk lid up a little ways so it is not banging metal on metal. Replace the seal if it is missing.

 

[Fi-brations 10+ year member]

back in my old car, my friend noticed that if he pushed down on the trunk it reduced the rattling a lot, so the latch must have been worn out, maybe that's a common problem

 

[jteske88 10+ year member]

I applied almost 4 layers through out the trunk, lid got 4. Still rattled. I listened to it for a min and found that my third brake light in my spoiler was the culprit. The board in there was shaking in side the plastic. There was really any way to get to it. So I took a fine drill bit and drove it in between the board and plastic. Filled the hole with some sealant now almost all gone. My sunroof is the issue now. Every time you fix something, there will be another noise posit you off more.

 

[Tenacious]

Turn up the volume so it's inaudible from the inside //content.invisioncic.com/y282845/emoticons/up2something.gif.dd110ecf3ae4b76050d87598f2f8de7c.gif

 

[k_schutte 10+ year member]

Don't pressurize the trunk... only real way to get rid of it.

I am pretty sick of it myself in my CTS so I am building a 4th order with the port coming up through the rear deck where the factory sub use to be. **** sure shouldn't have any trunk rattle after that! LOL

 

[BigMikeQ 10+ year member]

It's a 2012 Buick Regal and I have lowered the latch 1", licenses plate is good, lights are good. I did find that when my friend seat on the trunk lid it stopped, now if I could just keep him there I'll be good.. Lol

Anymore advice please? The Buick symbol is about to fall off.