Operation CHARM
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Pontiac
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1991
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Grand Prix L4-138 2.3L DOHC QUAD 4
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Repair and Diagnosis
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Heating and Air Conditioning
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Testing and Inspection
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Component Tests and General Diagnostics
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System Operation Check
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System Check - Blower Controls
System Check - Blower Controls
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Use the System Check Table as a guide to normal operation.
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Even though one or more checks may not give the normal result, complete the entire System Check to reveal all symptoms which may exist.