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  1. R

    CEL - Error Code P1409

    I just got done changing the plugs in my 2001 LS (thanks for all the info on the site, couldn't have done it without you) but now I have a CEL with a code P1409 "EGR Vacuum Regulator circuit malfunction". I called my local dealer, but they didn't want to help, unless I wanted to waste $90 for...
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