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Firebird V6-3.8L VIN K
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Scan Tool Testing and Procedures
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Scan Tool Data Definitions - Powertrain Systems
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18X Crank Sensor
18X Crank Sensor
Scan tool displays
0 to 1200 RPM.
This signal is produced by the
ignition control module
and is fed to the PCM to calculate engine RPM below
1200 RPM.