Operation CHARM
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GMC Truck
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2000
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Safari Van AWD V6-4.3L VIN W
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Repair and Diagnosis
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Relays and Modules
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Relays and Modules - Powertrain Management
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Relays and Modules - Computers and Control Systems
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Body Control Module
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data Definitions
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Outputs
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Courtesy Lamp Relay
Courtesy Lamp Relay
The scan tool displays the commanded state of the
courtesy lamp relay
. The scan tool displays ON when the
BCM
allows the courtesy lamp relay coil to go to ground to activate the courtesy lamps.