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Home >> Chevrolet >> 2000 >> C Tahoe 2WD V8-5.3L VIN T >> 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 >> Air Pump Relay
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Air Pump Relay

The scan tool displays ON or OFF. The scan tool displays ON when the PCM grounds the AIR pump relay control circuit. The scan tool displays OFF when the PCM disables the ground circuit.
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