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Discussion Starter #1
Hi, I have just found out that a used 2003 GMC Sierra I purchased doesn't have a cabin filter. That is a big problem!!! I work in the country and dust is an issue. Does anyone know of a way to change/modify the airbox to add the filter??? TXS Chris
 

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Just for some input...

I have a 2005 1500 Extended Cab. I installed the filters
in my truck.

I saw in the thread that everyone was concerned about a cover.

I cut the hole length 1/4 inch less than the filter and also
back from the front edge a quarter inch. The width of the hole
was wide enough to fit the filters without snagging them.

Had to angle the filter and bow it a bit to install.

First one went in, pushed it to the back. Fits snug like it is
seated in place with no wobble. Second one was installed the same
way and once in place, the corner edges sit on each side of the ledge
from the hole so it will not drop down unless you grab and pull.

For a cover... I used a couple of strips of the old reliable duct tape.
Reasoning is.. filter is in place, just want to make sure hole is sealed,
easily removeable when time to change filters, not a cosmetic issue
because there is the plastic kick plate/cover that hides the whole
fan assembly.

:grd:
4wheeln
 

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What'd you cut the hole with? Got pix?
Thanks,
Lar
 

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Your dealer can order you a cover for the hole for a few bucks. Cut the hole with a Dremel. They build the air conditioning units where I work.
 

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Hey slip one out in your lunch box, like Johnny Cash's song, "One piece at a time." ;) Just kidding, are there scored lines or some guide where to cut, pix maybe? I don't recall on my '01 where exactly the slot was.
Thanks.
Gup
 

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Bac To The Future
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Guppy,

See the link in post #2. Pics on second page.
 

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Thanks Bac, missed that link.
 

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Bac To The Future
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No prob, Guppy. You thinking of cutting into your truck? I'd like to have the filters too, but I'm not experienced enough with a dremel to try it.
 

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Especially now w/ your HANDicap. You get one of those little blue parking passes?):h ):h
 

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That is too kewl! On to my next project! I will do the wifes Yukon XL too!!! Thanks Desert Diesel for the link!!!
 

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Oh boy, another convert! My dad put the filters in his 03 Dmax. Carving up his new truck probably caused him some concern but they are in and ready to keep the interior dust free. He found crap & corruption in the duct when he opened it up, leaves & stuff. Dust free interior even with the vent open - - - I'll never figure out why GM dropped that idea!
 

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Now....who wants to go out to their '02 and measure the slots in the ductwork for me? I think from looking at the pics that the slots run up about 2 inches and back about 4 inches.
 

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Hey Tom...I see a "work on our trucks" day coming up soon!:cool2:
 

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Bac To The Future
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Heh Heh Heh.....I see beer in our future......:lol:
 

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Now....who wants to go out to their '02 and measure the slots in the ductwork for me? I think from looking at the pics that the slots run up about 2 inches and back about 4 inches.
Lemme see what I can do about a detailed picture..............

:cool:
.
.
.
 

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I don't have the pics of the actual cutting procedures but you should get an idea of the project. The length of the hole in this case is about 1/4" narrower than the filters, but its and easy squeeze to fit the filters in place. First one in, slide it towards the firewall, next one is held in place by the "shoulder" on the front of the duct. BTW, the screw over the transmission hump is a real pain to get to. In this case a 9/32, (7mm) 1/4" drive with a very short extension is the best. Sorry for the delay with the pics. Hope this helps.
 

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8 pic limit.... now for the finale
 

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Thanks Mitch, now I have a weekend project!
 

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Its not much, maybe about an hour.
 
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