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Chevy Truck
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2000
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Express 1/2 Ton Van V8-305 5.0L VIN M SFI
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Repair and Diagnosis
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Powertrain Management
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data, Normal Values and Definitions
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Scan Tool Data Definitions - Powertrain Systems
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Spark Control
Spark Control
ADVANCE/RETARD:
The spark control parameter indicates whether the
VCM
is advancing or retarding spark.