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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Data
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Vehicle Speed
Vehicle Speed
The scan tool displays the speed the vehicle is traveling. The
BCM
uses this data for the automatic rolling door lock and the turn signal reminder features.