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Rear deck grilles (coupe)

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Old Feb 25, 2002 | 10:46 PM
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Default Rear deck grilles (coupe)

On my 75 coupe with a/c I noticed that the grilles behind the rear window have no drainage holes or any functionality. I have been looking at other cars not same year and they have openings with a some type of vent. Does anyone have this type of setup like I have? Or can someone explain why this might be. Thanks :confused: :confused:
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Old Feb 25, 2002 | 11:42 PM
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Default Re: Rear deck grilles (bl75vette)

There is a drain on mine in the interior, drains into the wheelwells.

Tom
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Old Feb 26, 2002 | 12:21 AM
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Default Re: Rear deck grilles (Tom McCabe)

These vents are part of the astro ventilation. They are only functional on Non AC cars. There is a vacuum actuator to open and close these vents that is controled by the heating/ventilation control on the console.
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Old Feb 26, 2002 | 01:59 AM
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Default Re: Rear deck grilles (bl75vette)

I have the same setup on my 75, grills that lead to nowhere :crazy: Have to remove them every time I wash the car to get the water out :chevy
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Old Feb 26, 2002 | 02:05 AM
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Default Re: Rear deck grilles (Chevyguy)

There's a little black rubber hose that drains into the wheelwell somewhere.
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Old Feb 26, 2002 | 02:12 AM
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Default Re: Rear deck grilles (bl75vette)

Mine's got 'em too. :cry

It's astro-ventilation. There's a little lever on the early sharks on the shifting console to open/close the vents. On '75s, it's non-functional(no levers). No drainage holes either. I think in '76 they went away. Not sure why they stopped with the vents though. The bolts are starting to rust on mine, so looks like i'll be making a run to home depot for some stainless.

If it's holding water and being completely useless, then it's working right :yesnod: :chevy
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Old Feb 26, 2002 | 02:12 AM
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Default Re: Rear deck grilles (bl75vette)

Vents are decoration only. Use a shop vac for the water.
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Old Feb 26, 2002 | 09:26 AM
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Default Re: Rear deck grilles (bl75vette)

If your '75 has A/C then the grills are "functioning" correctly, they store a small pool of water for the birds to drink from. In '76 they got rid of the grills completly.
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Old Feb 26, 2002 | 01:37 PM
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Default Re: Rear deck grilles (KenSny)

If your '75 has A/C then the grills are "functioning" correctly, they store a small pool of water for the birds to drink from. In '76 they got rid of the grills completly.

:lol: :lol: :lol: :lol: :lol:

Or bats,
Tom
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Old Feb 26, 2002 | 02:22 PM
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Default Re: Rear deck grilles (KenSny)

If your '75 has A/C then the grills are "functioning" correctly, they store a small pool of water for the birds to drink from. In '76 they got rid of the grills completly.
A mobil birdbath..you guys crack me up!! :lol: :lol: :lol: :lol: :lol:
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Old Feb 26, 2002 | 05:48 PM
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Default Re: Rear deck grilles (Silvr77)

Thanks for the info guys. I figured I would have to remove the grilles to clean each time. I like the shop vac idea. Were the bottoms of the (fake vents painted black or the car color? Mine were painted black before the new paint.
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Old Feb 27, 2002 | 09:54 AM
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Default Re: Rear deck grilles (bl75vette)

Flat black.

FWIW: I just put a corner of a towel in the grill opening, and let the water "wick" up to the towel. Only takes a couple of minutes.


[Modified by KenSny, 8:56 AM 2/27/2002]
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