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Home >> Chevrolet >> 2000 >> Lumina V6-3.1L VIN J >> 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 >> Knock Retard
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Knock Retard

Scan Tool Displays 0.0 degrees to 25.5 degrees. Indicates the amount of spark the PCM is removing from IC spark advance in response to the signal from the knock sensors.
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