08-07-2015, 10:13 PM | #1 |
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Join Date: Mar 2014
Location: Luray, VA
Posts: 73
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Heater Control Valve
My '72 GMC has what appears to be a replacement heater control valve in the engine compartment. However, the vacuum fitting is not connected to anything, and I can't find any information on this in the service manual. Anyone know what it connects to?
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Bill Shenandoah Valley of Va 1972 GMC 2500 Sierra Grande 402, Custom Camper Package |
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