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Home >> Chevrolet >> 1999 >> Astro Van 2WD V6-4.3L VIN W >> 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

Range 0.0 - 90 Degrees
The KS Retard indicates the amount of spark advance the VCM is removing in order to control spark knock.
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