Hummer H2 P0449: Vent Valve Solenoid – Circuit Malfunction | Drivetrain Resource
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Hummer H2 P0449: Vent Valve Solenoid – Circuit Malfunction | Drivetrain Resource
A somewhat common issue with the Hummer H2 is the P0449 code. This code references a number that is given to you when you plug it into a OBD2 scanner. P0449 deals with the evaporative emissions control (EVAP) system. It often appears with, or is related other codes, such as P0420, P0446, and very often
Dec 19, 2018
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