Operation CHARM
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Buick
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1988
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Electra V6-231 3.8L VIN 3 FI
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Repair and Diagnosis
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Relays and Modules
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Relays and Modules - HVAC
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Control Module HVAC
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Diagrams
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Electrical Diagrams
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Automatic Climate Controls
Automatic Climate Controls
Simplified ETCC Circuit Diagram:
