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Home >> Chevrolet >> 1977 >> Vega Base, 2D Hatchback, Automatic Trans >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Automatic Temperature Control >> Components & Functions >> Control >> Control Vacuum Valve

Control Vacuum Valve

Located at the forward edge of the baseplate is a nine-port rotary valve which interconnects or vents the vacuum hoses attached to it to perform various functions required in the system.

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