Operation CHARM
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GMC Truck
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1993
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Typhoon V6-262 4.3L Turbo
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Repair and Diagnosis
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Heating and Air Conditioning
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Air Door
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Air Door Actuator / Motor
Air Door Actuator / Motor
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Description and Operation
Testing and Inspection
Symptom Related Diagnostic Procedures
With A/C
Airflow Only From Floors and Defrost Vents, In Any Position
Incorrect Airflow With Control In One Position
Without A/C
Component Tests and General Diagnostics
Service and Repair
Air Inlet Valve Assembly Replacement
Plenum Side Vent Actuator Replacement
Diagrams
Part 1 0f 3
Part 2 0f 3
Part 3 0f 3