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2014 Chevy Silverado
Platform: Truck, GMT 400, 800, & 900

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Old 10-13-2010, 09:35 PM
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Default p0404

I felt a few tug on my way home from camp going up a hill and just didn't seem to have it's normal power even on the flat. I see I have a P0404 code and a random cylinder misfire code. The P0404 that mean I should replace my EGR valve? Any advice on this thread would be great.
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Old 10-13-2010, 11:14 PM
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It could be possible that your EGR is stuck open which could set the code. It might be the EGR valve or it could be stuck open due to carbon build-up. If you can pull it and see if it's clogged up.
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Old 10-14-2010, 07:20 PM
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Default P0404

Thanks! My buddy has a AAMCO trans shop and hooks me up. Next week she's gonna have one of her guys try and clean the egr valve before we put a new one on.
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