: Sound deadening under rear seat *pics*

07-14-05, 08:26 PM
Torx T45
15mm socket
10mm wrench
7mm socket w/ extension, or nut driver
small screwdriver

Remove rear seat bottom by pulling the front of the cushion back and up
remove carpeting
http://img115.imageshack.us/img115/6421/underseat2xu.th.jpg (http://img115.imageshack.us/my.php?image=underseat2xu.jpg)
crawl into the trunk and use the 10mm wrench to remove the 4 upper nuts.
http://img115.imageshack.us/img115/3825/topbolts1xu.th.jpg (http://img115.imageshack.us/my.php?image=topbolts1xu.jpg)
use the small screwdriver to pop the middle seat belt buckle free.
use the 15mm socket to remove the 4 bottom bolts, and remove the seat back. ***it is VERY HEAVY** may want to have help
http://img115.imageshack.us/img115/6641/bottombolts6qj.th.jpg (http://img115.imageshack.us/my.php?image=bottombolts6qj.jpg)
http://img115.imageshack.us/img115/996/seatout27ks.th.jpg (http://img115.imageshack.us/my.php?image=seatout27ks.jpg)
http://img115.imageshack.us/img115/6851/seatout3ia.th.jpg (http://img115.imageshack.us/my.php?image=seatout3ia.jpg)
vacuum out the junk under there (i really like the red and green ribbons)
http://img115.imageshack.us/img115/4674/junk25ck.th.jpg (http://img115.imageshack.us/my.php?image=junk25ck.jpg)

at this point I removed my broken driver side sail panel, loosened the passenger side one, and removed the black side trim pieces. Curled up the carpet a bit, exposing the wiring back there.
Use the 45 torx to remove the rear seat belt, unclip the plastic bit from the sail and gently slide the seat belt assembly through the hole in the sail.
http://img115.imageshack.us/img115/4385/sail2zr.th.jpg (http://img115.imageshack.us/my.php?image=sail2zr.jpg)http://img115.imageshack.us/img115/4884/threading8ig.th.jpg (http://img115.imageshack.us/my.php?image=threading8ig.jpg)

part 2 coming...

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07-14-05, 08:39 PM
I further removed all the trunk trim and carpet...in anticipation of doing it soon.
http://img115.imageshack.us/img115/8571/trim1lv.th.jpg (http://img115.imageshack.us/my.php?image=trim1lv.jpg)

I bought 2 rolls of Peel and Seal from Lowes, around $12. Home Depot had nothing comparable. It's 6" x 25' of standard foil-backed asphault material.
**Prep the metal surface with soap/water, acetone, alcohol, or your degreaser of choice. I used cheap wal-mart purple degreaser. I wore deerskin gloves and used my utility knife to cut the PeelSeal. The South Texas sun heated it up nicely and it was STICKY. It WONT come off if you put it on the wrong spot.
http://img115.imageshack.us/img115/8996/peelseal7tq.th.jpg (http://img115.imageshack.us/my.php?image=peelseal7tq.jpg)
The keys, from what I've read are getting all the bubbles out and having no gaps. You could buy a wooden roller, but i used the butt-end of the utility knife. Worked great. Just pushing hard w/ the gloves worked great too.
http://img115.imageshack.us/img115/118/donepeel2wf.th.jpg (http://img115.imageshack.us/my.php?image=donepeel2wf.jpg)
Almost done in this pic, still some gaps.
Finished....I used 2 rolls, almost 25 square feet, often double-layering.

Then I used 2 full cans of Dap expanding-foam ~$3-4 to squirt along the wiring, into the holes the side trim pieces hook to, any other place that looked like it could use some. Sprayed the Dap also around the wiring to keep it from rattling. There is at least 1" distance from the trim to the metal, so there is alot of room for foam under there.
One "gotcha" is I covered the holes the side trim pieces went back into, had to hunt for them, lol.

Reinstalling was breeze. Get your seat belts back on, sails on, side trim, bottom carpet, rear seat backs, and bottom cushion.

Difficulty on my scale: 3. hardest part, those damn christmas tree things holding the side trim on.
Beers: 3
Time: 4 hours, including 2 trips to Lowes (buy 2 rolls the first time)

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07-14-05, 08:47 PM
Impressions: OMG holy moly....what a difference. NO, it's not stock quiet but damn it really did knock down that B&B a bit. I took the second trip to Lowes with everything out, no rear seat, no trunk trim. Shockingly loudest was road and tire noise, not the exhaust. The wheel wells were screaming...so I hit them with 3 layers, and the trunk portion I'll hit with extra coats. I am doing this in anticipation of my X-pipe coming...wanting the extra 7HP, but also wanting a happy wife. As you could see, GM didn't really deaden the rear seat area at all....
Added weight, maybe 4lbs.

Next project: trunk.
Bought 1 gallon of Second Skin Audio Spectrum $39.
Going to paint the trunk with it, top to bottom, as many coats as I can. Wondering if I have any left, if i can do the underside, near the actual x-pipe.
Goal: make the x-pipe tolerable in the family-truckster :D Has nothing to do with the stereo at all, but it'll help that too. Got that damn sail trim fixed too LOL

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07-14-05, 09:07 PM
Nice job Urb. The only negative to peel and seal is ........the smell. When that stuff gets hot in the Texas heat,..............let's just say..........you'll know it's there.:o


07-14-05, 09:10 PM
Nice job and great write-up! :thumbsup:

I'm having my car done next week by one of my friends who owns a stereo shop. He's going to use HushMatt in the trunk, under the rear seat and in all four doors. Then I'm upgrading all the speakers, adding an amp with a JL Audio CleanSweep and a custom sub box. They're going to have it for 5 days. I can't wait! The factory stereo has been driving me nuts every since I got the car. I use to do all this stuff myself like you did but now that I have a 4 year old and a 2 year old it's hard to find time to do things like this anymore. Now days it would probably take me 5 weeks instead of 5 days.

07-14-05, 09:21 PM
Nice job Urb. The only negative to peel and seal is ........the smell. When that stuff gets hot in the Texas heat,..............let's just say..........you'll know it's there.:o

i know, that's what the vinyl sound deadening vendors say...the smell. I'll see how it goes. I went for the cheap stuff under the seat...but I got the big guns for the trunk :) Without a monster stereo I felt no need to get pricey stuff.

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07-14-05, 10:27 PM
that is the best idea yet, two thumbs up..:thumbsup:

07-14-05, 11:23 PM

You need to post some serious pics and let us know how it goes. The complete stereo is one of my next mods.


The good news, it only takes about six months for the smell to go away:cool: