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1999
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Catera V6-3.0L VIN R
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Powertrain Management
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Scan Tool Data Definitions - Powertrain Systems
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Knock Retard Cyl. #3
Knock Retard Cyl. #3
0 - 191 DEGREES
This parameter displays the degrees of spark advance the
ECM
removes from the cylinder in response to the signal from the
knock sensors
.