vacuum ports on a/c-heat controls - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jk396 · 02-27-2009, 04:02 PM

wanting to know what the one on the drivers side goes to cant seem to find in my asm.manual there are 3 ,1 goes to vacuum can,2 goes to kickpanel,fresh air valve,heater valve, and the 3rd i dont know any help please?

mrein3 · 02-27-2009, 04:36 PM

Plug it with a short piece of hose and a sheet metal screw. Some of the factory assembly manuals show them to do just that.

**john** · 02-27-2009, 05:50 PM

this might help.

02-27-2009, 04:02 PM	#1
jk396 Registered User Join Date: Aug 2007 Location: alton,mo Posts: 17	vacuum ports on a/c-heat controls wanting to know what the one on the drivers side goes to cant seem to find in my asm.manual there are 3 ,1 goes to vacuum can,2 goes to kickpanel,fresh air valve,heater valve, and the 3rd i dont know any help please?

02-27-2009, 04:36 PM	#2
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,253	Re: vacuum ports on a/c-heat controls Plug it with a short piece of hose and a sheet metal screw. Some of the factory assembly manuals show them to do just that. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

02-27-2009, 05:50 PM	#3
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: vacuum ports on a/c-heat controls this might help. Attached Images __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/



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