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.

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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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