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  1. #1

    Default Overdrive Tiggers, The Check Engine Light to Come On.

    Recently every time my Sierra goes into overdrive it triggers the check engine light to come on. I have plugged it into the computer at my familys garage and it's coming up evap valve. I took the valve off and blew it out with an air hose and reinstalled it and reset the code. The light stayed off for a few days until today driving back from work I passed someone and as soon as the overdrive kicked in the light came on. I am going to plug it back into the computer and see what it reads. I'm just curious if anyone else has had this issue.
    Last edited by EthanP89; 06-17-2013 at 08:01 AM.

  2. #2

    Default

    Welcome to the club Ethan, it's great to have you aboard. I have not had that problem but I did have the coil on mine go out.


    2002 Chevrolet Silverado Extended Cab SportSide: See Mods in My Garage

  3. #3

    Default

    ****Thread Moved****
    To The
    General Chevy/GM Tech Section


    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










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