Thread: '04 trailblazer p0410, secondary air pump
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Old 12-04-2008, 08:10 PM   #2
maxwedge
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Re: '04 trailblazer p0410, secondary air pump
Problem is either a bad check valve/solenoid or a bad AIR pump, it will not affect the operation, but there is no way to stop the CEL. It will fail an emissions test if your state has one.
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