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[GMCnet] plastic plenum on the pass side firewall [message #112913]

Mon, 24 January 2011 10:44

Gary Worobec

Messages: 867
Registered: May 2005

Karma:

Senior Member

Hi,
On the passenger side firewall right above the batteries is a black plastic plenum with a vaccum assist cannister on it that is pop riveted to the aluminum firewall. If I cut into this with 2 1/2" heater duct will this feed the cabin heat or is this for the windshield defrost.? I took out the OEM heater a while back and now want to add an auxiliary heater back in.

Thanks

Gary and Joanne Worobec
1973 GMC Glacier
Anza, CA
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[Message index]

		[GMCnet] plastic plenum on the pass side firewall By: Gary Worobec on Mon, 24 January 2011 10:44
		Re: [GMCnet] plastic plenum on the pass side firewall By: Ken Henderson on Mon, 24 January 2011 13:47
		Re: [GMCnet] plastic plenum on the pass side firewall By: Gary Worobec on Mon, 24 January 2011 14:33
		Re: [GMCnet] plastic plenum on the pass side firewall By: Ken Henderson on Mon, 24 January 2011 17:16
		Re: [GMCnet] plastic plenum on the pass side firewall By: Larry C on Thu, 27 January 2011 09:01
		Re: [GMCnet] plastic plenum on the pass side firewall By: g.winger on Tue, 25 January 2011 05:59
		Re: [GMCnet] plastic plenum on the pass side firewall By: Ken Henderson on Tue, 25 January 2011 06:32
		Re: [GMCnet] plastic plenum on the pass side firewall By: GeorgeRud on Tue, 25 January 2011 14:05

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