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    htaylorallen's Avatar
    htaylorallen Posts: 10, Reputation: 1
    New Member
    		  
    #1

    Apr 30, 2012, 09:25 PM
    Error code po442 on 2007 chevy hhr
    What steps do I take when I just got an check engine light code PO442 on my 2007 chevy hhr
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
    		  
    #2

    May 1, 2012, 05:33 AM
    Are you having a hard time starting the vehicle? There have been problems with the electrical system but GM also recommends an update for the Engine Control Module (ECM).
    P0442 normally indicates a small leak in the Evaporative Emissions Sysytem (EVAP) that could be as simple as a worn fuel fill cap gasket not sealing properly.
    Check or just replace the gasket on the fuel cap and make certain it is tightened after each fuel fill.
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