Operation CHARM
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Hummer
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2007
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H3 L5-3.7L
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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
>>
Coolant Heater Inoperative
Coolant Heater Inoperative
Coolant Heater Inoperative
Step 1 - Step 6:
