Question about 1980 Chevrolet Corvette

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The vents on the dash are not working in my 1980 corvette. the fan is working when the heater is on. but can not get the dash vents to blow.

Posted by calvin guidry on


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If you have A/C. When you put the heater on defrost it activates the A/C pump so it will not freeze up from not being used. If you don't care about the pump disconnect the plug that engages the clutch on the pump and use a jumper wire to bridge the plug to itself and your defrost should work

Posted on Aug 25, 2010


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