Need help with sound deadeners??
 

click here

^^its the sound deadener showdown. it will give you great information on multiple types / brands of deadeners

RE: Need help with sound deadeners??
 

Thats a good link. i need to deaden my truck asap. now i have a list of manufacturers. thinking of going with Fatmat.

how would you go about reducing the vibrations of the little black plastic filler panels on the upper rear corners of a second gen blazer, whenever my subs hit they vibrate like the trunk on a mexican's civic. would some sort of spray foam work?

im not exactly sure which panels you are talking about

'Mexican's Civic'? I'll choose to just dismiss this....

I think he's talking about what would be considered the 'D' pillar, or the plastic pieces that are to the immediate left and right of the rear glass.

Mine rattle too, but it sounds like its coming from the inside, not the external plastic itself.

Nice article. I have all the carpet and original sound deadening out of mine for "repairs" to the floors. I was just gonna get some cheapo matting I may need to rethink this now.

i only hear the vibration when im standing outside of the car. but then again, in order for it to vibrate its gotta be rather loud in the car. i was told to stick matchbooks in the cracks to find otu where its vibrating against and then when i find it pop the panel and find some sorta foam and wedge it in there

There is a vent inside each of those panels, when u remove the panel, you can see the vent. The flaps on the vent move and thats what makes the vibration. I tied a piece of rubber band around each flap and they don't vibrate anymore. Pretty easy fix.

thanks dude, ill give it a shot

that vent allows air to escape your vehicle when you close your doors. you dont wanna seal it off