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Home >> Cadillac >> 1999 >> DeVille Concours V8-4.6L VIN 9 >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Knock Retard

Knock Retard

Display shows knock retard from 0 to 45 degrees. Which indicates the amount of spark advance in degrees that the PCM is removing from the Ignition Control (IC) in response to the Knock Sensor (KS) signal.
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