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Pontiac
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2000
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Firebird V8-5.7L VIN G
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data Definitions - Powertrain Systems
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Knock Retard
Knock Retard
The scan tool displays a range of
0.0 degrees-16 degrees
. Knock Retard indicates the amount of spark the
PCM
removes from the IC spark advance in response to the signal from the
knock sensors
.