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Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

My CEL keeps coming on and giving the code P0404 which says something like Exhaust Gas Recirculation open performance. I changed EGR valve and it still came on I had it cleared today and it came on again within 10 miles can anyone help please?... JOIN NOW TO REMOVE TRACER

CEL-code P0404

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Old 06-20-2013, 08:21 PM
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Default CEL-code P0404

My CEL keeps coming on and giving the code P0404 which says something like Exhaust Gas Recirculation open performance. I changed EGR valve and it still came on I had it cleared today and it came on again within 10 miles can anyone help please?
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Old 10-23-2013, 09:20 PM
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Is your vacuum pump working good? Where did you get the EGR valve from?
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