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Chevrolet
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2003
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TrailBlazer 5.3 P, RWD
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System - Self-Diagnostics - 5.3L
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Diagnostic Tests
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DTC P0446: EVAP Vent Control Circuit
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Conditions For Setting DTC
Conditions For Setting DTC
The Fuel Tank Pressure (FTP) is less than -10 in. H2O.
The condition is present for more than 30 seconds.