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Air pressure in cabin

Air pressure in cabin

Postby hunter58 [OP] » Mar 30 2012, 5:37pm

Does anyone have a cure from interior cabin pressure when opening windows. On my truck, (2001 silverado extended cab) when you open the back windows you get a pulsating pressure that hurts your ears. Does anyone else have his problem? Any fixes?
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Re: Air pressure in cabin

Postby Damion » Mar 30 2012, 7:13pm

Alot of cars with a sunroof will do this also ( if they dont have a wind deflector ) Id guess the air passing over the open window causes a low pressure vacum which is greater than the amount of air coming in.

I used to open a window a crack to get rid of it. if you have a SRW, sliding that open a touch should help too. It dont have to be open much not much more than 1/4 inch.
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Re: Air pressure in cabin

Postby hunter58 [OP] » Mar 30 2012, 7:50pm

First of all I have a correction. 2011 Silverado, not 2001 Silverado.
Yes, opening the window a crack works but if you open them enough to get a decent air flow the pressure increases. Has anyone seen any benifit from adding window/vent visors?
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Re: Air pressure in cabin

Postby c0j0nes » Mar 30 2012, 9:26pm

I installed a sunroof visor. It eliminated the issue.
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Re: Air pressure in cabin

Postby scottja » Mar 30 2012, 10:17pm

hunter58 wrote:. Has anyone seen any benifit from adding window/vent visors?

Nope it will still do it.
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Re: Air pressure in cabin

Postby firefighter3215 » Mar 31 2012, 12:04am

I know what you mean with it hurting your ears... I wonder if a rear slide down window would do the trick??? I have not found any solution other than rolling up the windows and turning on the A/C
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Re: Air pressure in cabin

Postby Damion » Apr 01 2012, 1:34am

Opening the window just enough so it dont buffer and the window dont whistle is all ive found to work. Ive got vent visors on all windows.
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Air pressure in cabin

Postby 509Silverado » Apr 01 2012, 4:12am

Damion wrote:Opening the window just enough so it dont buffer and the window dont whistle is all ive found to work. Ive got vent visors on all windows.


On my work truck I just open the back passenger window as much as I can without it buffering, then open the front window on the same side. The more you open the front, the more airflow inside you get. Just an option.
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Re: Air pressure in cabin

Postby 11 Silverado » Apr 01 2012, 3:52pm

All of the vehicles that I have owned for the past several years have done this. If I open the rear windows a bit, I always open the front passenger side a little too. This stops that pulsating, and extremely annoying air pressure noise. Years ago, none of my vehicles did this. I guess that it is just a byproduct of the shape of today's vehicles? I installed the in-channel window visors recently, and now I can open the three windows a bit without worrying when it is raining also.
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Re: Air pressure in cabin

Postby BuxCamper » Apr 03 2012, 6:58pm

I've got the same thing with the Silverado and the Envoy. If the back windows a open a bit, I crack the front ones too. The pulsing doesn't physically hurt my ears but is damned annoying.
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