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2011 Chevrolet Impala Question: this is the 3rd time in 6 months my check engine light has come on the

 

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Impalalemmon, 3.5L V6, Ocala, FL, January 10, 2013, 11:56
 Rookie

dealer keeps telling me its the gas cap. i know i'm putting the gas cap on correctly. what else can it be and why isn't the dealer looking for something else? this is making me crazy.

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  • Answer #1

    January 10, 2013, 12:35
    Profile_thumbnail
     Master

    I will assume the engine code says evap. system leak detected small. One possibility is the gas cap but, any hose or vacuum line break or component issue that has a leak can could throw this code. It is an emission recovery leak and the best way to find it is with a "smoke test". Inform the dealer you need this test performed to solve the issue.

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  • Answer #2

    Greg's Orange Auto (14224 Answers) , Orange, CA - (714) 361-9386
    globalhelper January 10, 2013, 12:50
     Master

    ASK THE DEALER IF THEY DID A SMOKE TEST TO DETERMINE IF VEH HAS A SMALL VAC LEAK TO START WITH

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