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What is this part called?

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Old May 25, 2006 | 09:29 PM
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Default What is this part called?

What is the vacuum and heater cable operated switch that sits on top of the heater box, under the passenger side dask? Not the one under the hood.

Mine has broke and I cannot find out what the part is called in my manuals to order a new one.


Thanks for the help.
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Old May 25, 2006 | 09:38 PM
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3859356 Switch assembly vacuum, This is for a 67. I dont have the number for the sharks here.
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Old May 25, 2006 | 11:11 PM
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Thanks for the reply
This is for a 77.
I should have stated that to start with.
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Old May 25, 2006 | 11:38 PM
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Don't know if they make them anymore..I by-passed mine...no heat...78 SA.
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Old May 26, 2006 | 12:05 AM
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Talk to the used parts guys like Gary Gruhala in DeSoto, MO, or put an ad in the "C3 Parts" section. I'm sure someone has a useable one around.
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Old May 26, 2006 | 12:39 AM
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They have been available from GM. I cant get to my parts books tonight, but if you give that part number to your GM parts guy, he can get the group number and thus look up the correct part for the sharks.
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Old May 26, 2006 | 01:36 AM
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I still have a complete heater box I could remove the parts you want off, shipping should be a couple of dollars, not too bad
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Old May 28, 2006 | 03:22 AM
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Rihwoods; I can get away with that for this summer. But sometimes, ya just gotta have the heat on. Especially when the girlfriend is cold.

He is the picture of it



TT: That is a generous offer.
Do you have this part and what would your shipping be over the pond?
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Old May 28, 2006 | 04:17 AM
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Originally Posted by supercalvin
What is the vacuum and heater cable operated switch that sits on top of the heater box, under the passenger side dask? Not the one under the hood.

Mine has broke and I cannot find out what the part is called in my manuals to order a new one.


Thanks for the help.
Try Bowden cable assembly. It's a combination of cable, switch and vacuum ports so it operates off a mechanical cable as well as vacuum.
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Old May 28, 2006 | 05:25 AM
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I'll have to look if that is on my heater box, I don't recall seeing anything that resembles that, are the later heater boxes different?
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Old May 28, 2006 | 08:44 AM
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I have a 76 and just changed the heater core. Mine didn't have anything like that.
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Old May 28, 2006 | 09:02 AM
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DrRebuild has it in the catalog, part #2771405 but You have to bring
along 57.60 plus shipping. Might want to try to find a used one !
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Old May 28, 2006 | 11:05 AM
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The task of this valve is to shut off the coolant going through the heater core so the AC operates better.It controls the water shutoff valve under the hood on the right side of the motor in the heater hose. ----vacumn shut off valve ecklers part # 23191 $24.99
look under air conditioning for 68-82 my cataloge page is 343 item 14 in diagram
Roger

Last edited by ...Roger...; May 28, 2006 at 12:05 PM.
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Old May 29, 2006 | 03:27 AM
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Default Thank you Corvette Forum

Thank you dwncchs you really made my day.
First beers is on me if
I looked through Ecklers website but never found it. That part # sure helped. Now I getta go through their catalog again and see what else I need to order. Cause ya just cann't order one thing at time.


For everybodys info here is the description.

1969-72 Windshield Wiper Arm Control Valve & 1977-82 Air Conditioning Vacuum Shut Off Valve
Mounts On Firewall/Wiper Arm Presses On 1969-72
Mounts Under Dash On Heater Box For 1977-82
Item# 23191
In Stock
$24.99 ea.
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Old May 29, 2006 | 01:58 PM
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"Rihwoods; I can get away with that for this summer. But sometimes, ya just gotta have the heat on. Especially when the girlfriend is cold."

Maby you're not warming the girl friend up the right way!
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