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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 >> Knock Retard
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Knock Retard

The scan tool displays a range of 0.0 degrees-16 degrees. Knock retard indicates the amount of spark the PCM removes from the Ignition Control (IC) spark advance in response to the signal from the knock sensors.
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