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  1. #1

    Default OBD-II port not working

    Hey guys, I have a 2001 Silvy that keeps tripping the CEL every time I fill up. It's a problem with the fuel canister purge valve. I have been using my code reader to reset the light, but now the reader wont power on or self test when plugged into the port. I tried the reader in other vehicles and it seems to work fine, so I'm thinking it may be the port itself.
    I have checked for loose wiring and such.
    Anyone have any insights on this?
    Thanks in advance for any help!

  2. #2
    Jr. Engineer Gmcsuvguy's Avatar
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    Default

    There is a fuse for it... I can't remember which one it is in the fuse box right now...
    Ken Beida
    2010 GMC Sierra Crew Cab 4X4, 5.3L
    2009 GMC Sierra Denali, 6.2L = 403hp, AWD, Full load

  3. #3

    Default

    Thanks for the reply! I thought it may be a fuse issue, but the manual doesn't list a fuse for it specifically. Guess it's time to check each one individually.
    Thanks again

  4. #4

    Default

    I know on a Katrina truck, the OBD-II port didn't work because the power wire in the connector corroded to hell and didn't have a connection anymore. No power equals no OBD worky...
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  5. #5

    Default

    check the cig ltr fuse.

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