Check Engine Light and Trouble Filling Gas Tank: GMC Sierra 2500 Muffler & Exhaust

Problem overview

The GMC Sierra 2500 is known to have issues with the EVAP system, a part of your emission control system.

The EVAP canister vent valve or valve solenoid wiring may fail causing illumination of the check engine light, setting code P0446, and problems filling the tank with fuel.

To correct the issue, the EVAP canister vent valve, solenoid, and wiring must be inspected. The most common fix is replacement of the wiring connector or replacement of the vent valve assembly.

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GMC Sierra 2500 vehicles with this problem

1 model year affected

2004 GMC Sierra 2500

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Check Engine Light and Trouble Filling Gas Tank on GMC Sierra 2500

Problem overview

GMC Sierra 2500 vehicles with this problem

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