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No Communication from OBDII OBD II OBD 2 OBD2 Port (Cig fuse is good)

Discussion in 'Chevy C/K Truck Forum' started by mmor101, Jun 17, 2013.

  1. mmor101

    mmor101 New Member

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    Got a Service Engine Soon light and would like to pull the code. I'm getting +12V power from the OBD connector but my scanner can not communicate. All the wiring in the back of the connector looks secure. Any ideas?
    #1
  2. 4x4squared

    4x4squared New Member

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    What year is your truck?
    #2
  3. mmor101

    mmor101 New Member

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    96' with the 4.3L. I wish I could give you the exact production date but the sticker on the door jamb is worn. I know for a fact is it OBDII because of the sticker under the hood.
    #3
  4. Enkeiavalanche

    Enkeiavalanche Moderator

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    How old is your battery? If it is weak your tester might not read the Truck..
    #4
  5. mmor101

    mmor101 New Member

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    I just bought the truck but the battery looked somewhat new. I have over 12v at the OBD port, tested with multimeter.
    #5
  6. Enkeiavalanche

    Enkeiavalanche Moderator

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    did you Load test it?
    #6
  7. 4x4squared

    4x4squared New Member

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    have we tried a different scanner? your scanner might just hate your truck :p
    #7

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