I have a code PO 410

2005 CHEVROLET TRAILBLAZER
54,000 MILES
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DENNIS CASE
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I know the code is secondary air intake valve so I replaced the valve new also the relay took the pump off to check out ran a jumper wire it ran like a top . I can here the pump come on and cut off each cold start up . .
Oct 8, 2011 at 10:49 AM
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DAN_K
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This is from a manufacturer service message (#PIP3530):

If diagnostics do not isolate the cause of a P0410 DTC, there is no sign of dirt or water in the AIR pump or relay, and proper AIR check valve operation is noted, replace the position 1 O2 sensor.
Oct 8, 2011 at 11:44 AM