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Home >> GMC Truck >> 1999 >> C 3500 Truck 2WD V8-5.7L VIN R >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> A/C Relay

A/C Relay

(ON/OFF):
The scan tool indicates whether the A/C relay control circuit has been commanded ON by the VCM. The A/C relay provides power to control the A/C compressor clutch. It will indicate YES when the relay is commanded ON.
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