Door ventilation openings? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kikkegek · 11-17-2010, 04:31 AM

Hi there,

can somebody please explain to me what the function is of these vent openings in the doors:

They are in the front and rear doors and do not seem to be connected to the heating system. Or are they?

When I look into them, it seems like there is something behind it?

can somebody help me with this?

I am making new door panels for my compo speaker set and I want to know what to do with this.

48cj2a · 11-17-2010, 07:54 AM

Pressure relief while shutting the doors.

It works like a one way check valve.

There is a rubber flapper on the inside.

kikkegek · 11-17-2010, 08:14 AM

Quote:

Originally Posted by 48cj2a

Pressure relief while shutting the doors.

It works like a one way check valve.

There is a rubber flapper on the inside.

oke! thanks man! I wonder if this still works in my 25 year old Burb, which drove around in CA for 24 year. The rubber is probably hard as a rock!

But I'll check...thanks!

I was hoping for something like support-vent holes for the heating, because now the heating is only brought into the car by the vent holes in the dash and the vent openings under the dash near the floor in the middle.

Number21 · 11-17-2010, 10:06 PM

For some reason my '73 has plastic covers screwed over those vents. They almost look factory. I have no idea why...

motornut · 11-17-2010, 11:27 PM

my burbs came with that area covered in carpet
some ppl may remove the carpet strip
leaving the plastic

11-17-2010, 04:31 AM	#1
kikkegek Registered User Join Date: Aug 2010 Location: Netherlands, The Hague Posts: 1,518	Door ventilation openings? Hi there, can somebody please explain to me what the function is of these vent openings in the doors: They are in the front and rear doors and do not seem to be connected to the heating system. Or are they? When I look into them, it seems like there is something behind it? can somebody help me with this? I am making new door panels for my compo speaker set and I want to know what to do with this. __________________ My dreamride / project:1977 GMC C15 Suburban In storage: Monster - 1974 GMC Suburban 25hundred Sold : Chevrolet Suburban K20 Silverado 1986 Guide: real HID projectors for 4x6 headlights link: DIY LED TAILLIGHTS

11-17-2010, 07:54 AM	#2
48cj2a Registered User Join Date: Feb 2010 Location: Central, IL Posts: 599	Re: Door ventilation openings? Pressure relief while shutting the doors. It works like a one way check valve. There is a rubber flapper on the inside. __________________ 03 Suburban Z71 Z71 98 GMC Yukon SLT 4x4 Yukon 86 M1009 CUCV Project Milverado 48 Willys CJ2A 48CJ2A

11-17-2010, 10:06 PM	#4
Number21 Registered User Join Date: Aug 2009 Location: Oregon Posts: 611	Re: Door ventilation openings? For some reason my '73 has plastic covers screwed over those vents. They almost look factory. I have no idea why... __________________ '73 K20 Cheyenne Super Camper Special 350/TH350/NP205 sittin' on 33's. You can set my truck on fire and roll it down a hill, and I still wouldn't trade it for a Coupe de Ville.

11-17-2010, 11:27 PM	#5
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: Door ventilation openings? my burbs came with that area covered in carpet some ppl may remove the carpet strip leaving the plastic __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350



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