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Chevy Truck
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1999
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Tracker 2WD L4-2.0L VIN C
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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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Initial Inspection and Diagnostic Overview
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Vehicle On-Board & Scan Tool Diagnostics
>>
Engine Scan Tool Data Definitions
>>
Spark
Spark
The scan tool range is
-1
to
+60 degrees
. This displays the
PCM
controlled value that is being used to control the spark timing.