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GMC Truck
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1999
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C 1500 Truck 2WD V8-5.3L VIN T
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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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A/C Relay Command
A/C Relay Command
The scan tool displays On or Off. This parameter displays the
PCM
commanded state of the A/C clutch control relay. When the scan tool displays ON, the A/C clutch should be engaged.