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Oldsmobile
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2003
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Silhouette GL
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC P0446: EVAP Emission Control System Vent Control Circuit
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Test Description
Test Description
The number below refers to the step numbers in the diagnostic procedures.
4 -
This test determines if the failure is present or intermittent.