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Home >> Chevrolet >> 1976 >> Luv Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Catalytic Converters >> Testing >> Vacuum Switching Valve

Vacuum Switching Valve

With valve removed from vehicle, apply 12 volts to connector terminals and listen for clicking of solenoid as it moves inside valve. If no clicking is heard, select a new valve and repeat check.