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Home >> Cadillac >> 1971 >> Eldorado 2D Convertible, Not Available Trans >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Automatic Temperature Control >> Control System Components & Functions >> Control Vacuum Valve
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Control Vacuum Valve

A nine-port rotary vacuum valve located on the control panel base plate and controlled by the mode selector lever. Vents or interconnects the vacuum hoses connected to it so that various vacuum functions of the system may be accomplished.

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