My wife has a 2007 LT sedan. Started having issues starting up and check engine light came on. Got code P2440 secondary air injection system switching valve stuck open (bank 1). It seems like it's a somewhat common issue (possibly just rusted) and sometimes an easy fix by freeing it up. I am wondering if anyone has a diagram as to where this might be and if anyone has ever tackled this before?
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Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716
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