Operation CHARM
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Buick
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1994
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Park Avenue Ultra V6-3.8L SC VIN 1
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Repair and Diagnosis
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Heating and Air Conditioning
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Description and Operation
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Circuit Operation
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Electronic Air Conditioning
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Blower Switch
Blower Switch
The blower switch, mounted in the heater and A/C control assembly, controls blower speed. Blower switch lever position determines whether current flows to the blower resistors or the high speed blower relay.