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Old 07-15-2012, 11:20 AM   #1 (permalink)
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Trouble Code P0411

My Impala is back with a code P0411, Secondary Air Flow

This is six times it's been back at the dealer and they keep replacing the air pump and valve. Obviously throwing new parts at it isn't fixing the problem.


Anyone else having this issue?

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Old 07-15-2012, 03:19 PM   #2 (permalink)
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Not having the issue, but the GM shop manual has a very detailed troubleshooting procedure for this code, involving checking air pressure and measuring resistances of components. Suggest the dealer may want to have a deeper look into things.

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