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  1. #1

    Thumbs up OBD1 Trouble codes

    Good source for info on DTC OBD1
    http://www.troublecodes.net/GM/


    Getting 34
    MAP sensor(voltage low)
    MAF sensor


    I found the oil pressure sending unit, but can't reach it (6'2, 250).
    Last edited by unplugged; 10-22-2009 at 06:20 AM. Reason: add title

  2. #2

    Default

    I have the same problm, exactly.

  3. #3

    Default

    check your egr valve that could be worng some time that give that code

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