Operation CHARM
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Pontiac
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1998
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Sunfire L4-2.2L VIN 4
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Repair and Diagnosis
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Heating and Air Conditioning
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Air Door
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Description and Operation
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Air Inlet Valve
Air Inlet Valve
The valve allows fresh (outside) air to enter the HVAC module when open. The valve will force the passenger compartment air to be recirculated when the valve is closed.