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Cadillac
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2003
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Seville SLS
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC P0326: Knock Sensor Circuit Excessive Spark Retard
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Conditions For Running DTC
Conditions For Running DTC
The engine speed is more than 600 RPM.
The knock detection is enabled.