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Thread: po340 help

  1. #1

    po340 help

    i have a 99 tahoe and the ses light keeps coming on reading po340. i replaced the sensor and still, same code, same problem missfiring. how to i fix this problem? i checked the wires, nothing wrong, i reset the code with a scan tool(a cheap autozone tool but it serves most of my small diy needs) but the light still comes on. any advice? thanks

  2. #2
    Senior Member DYNO OPERATOR
    Join Date
    Feb 2009
    Take the light out.

    Might have to give up women if you did that,LOL.

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