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  1. #1

    Default Error code P0411

    Hi , I am new to the forum and am in need of information about error code P0411 "Secondary air injector system incorrect flow." . Can I resolve this myself , what part do I need and where is this located on my truck? Thank you for the help.The truck is a 2008 Chevrolet Trailblazer,4.2 L straight 6 (inline 6 cyl) . The options are electric windows , seats , air ,cruise control, towing package and auto trans .
    Last edited by pj08tb; 03-08-2010 at 06:03 AM. Reason: updating information.

  2. #2
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  3. #3


    I just had this same exact problem with my 2008 Chevy Trailblazer 6cyl. 4.2L engine - it was a faulty secondary air injection solenoid - looks like they had to replace a valve and gasket also. Sorry I have no idea how to replace this though. $200+ cost or somewhere around there from the local Chevy dealer.

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