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Home >> Pontiac >> 1999 >> Firebird V8-5.7L VIN G >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data Definitions - Powertrain Systems >> Knock Retard
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Knock Retard

The scan tool displays a range of 0.0°-16°. Knock Retard indicates the amount of spark the PCM removes from the IC spark advance in response to the signal from the knock sensors.
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