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Code po410 Pump running new valves

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Oct 2, 2016 | 1:46 PM

edcorsaro

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Joined: Aug 2007

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Code po410 Pump running new valves

I am trying to smog my 01 Silverado. I was showing the code for bad check valve. I replaced both of the secondary air check valves, now I have a code po410. The air pump is blowing to the check valves at start up...What am I missing?

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