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I have a 2006 Chevrolet Silverado with the 5.3 and the code reader gave P0447 code. I just passed the mandatory state emissions test less than a month ago. What steps should I take to correct this.

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HI there

This code points to an issue with the vent control valve. Most cases the valve is the issue and once replaced the problem is resolved.

P0447 - Evaporative Emission Control System Vent Control Circuit Open

Read more: https://www.autocodes.com/p0447.html

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