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  1. #1
    Junior Member
    Join Date
    Jul 2009
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    Lawrenceville GA
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    14

    Red
    1999 Trans Am

    unplugged my computer !!!

    i unplugged the computer on my 99 ws6 to get under it,well when i plugged it back in and started her the engine light came on.now the low idle code is popping and of course its idling low what the heck ???

  2. #2
    Veteran pajeff02's Avatar
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    Feb 2009
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    Mansfield, PA
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    22,146

    Black & Blue
    '02 WS.6 / '07 Suburban

    Same effect as unhooking your battery. The PCM has to re-learn a few things before it will steady out. As to your lights, is the harness plug fully seated in the PCM?

  3. #3
    Junior Member
    Join Date
    Jul 2009
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    Lawrenceville GA
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    Red
    1999 Trans Am

    i think i got them in nice and tight but i will recheckem.

  4. #4
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
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    22,554

    98 Formula
    06 duramax

    have the code read at a parts store (free) and see what the code is and then go from there. Could be a number of things. Check all wires and make sure you didn't leave something unplugged or something along those lines.

  5. #5
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
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    Richmond VA
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    2,415

    LS1.com Sponsor
    GM Tuner

    you didn't pull it's harness and replace it with the battery still hooked up did you?

  6. #6
    Junior Member
    Join Date
    Jul 2009
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    Lawrenceville GA
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    Red
    1999 Trans Am

    Thanks everyone. like pajeff said the computer relearned itself. I got advance auto to clear the code and it still hasnt come back.

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