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P0446 Diagnostic Trouble Code Discussion for November 2009

EVAP Vent System Performance

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Trouble Ticket Help Requests for DTC P0446
Help Request Posted
2001 Chevrolet Suburban 1500 LT 5.3L MIL Lamp on VIN: 1HJ5231578
P0446: EVAP Vent System Performance. ... code P0446. Being that this code is normally the purge solenoid I replaced it. The code came back. I smoke tested the system and there are not any leaks. The lines do not have any kinks in them. I vacuum tested the system and it does not leak. I replaced t...
November 27, 2009