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Chevy Truck
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1999
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C 1500 Truck 2WD V6-4.3L VIN W
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data, Normal Values and Definitions
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Scan Tool Data Definitions - Powertrain Systems
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Air Pump Relay
Air Pump Relay
ON/OFF:
The scan tool indicates the state of the Air Pump Relay. The relay will be on only during closed loop.