Operation CHARM
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GMC Truck
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2003
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S15/T15 Sonoma P/U 2WD V6-4.3L VIN X
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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Coolant Heater Inoperative
Coolant Heater Inoperative
Coolant Heater Inoperative Step 1 - 6:
