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Thread: Which fuse is for the diagnostics port?

  1. 04-30-2008 #1
    umbrae
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    Which fuse is for the diagnostics port?

    I dont have power at my diagnostics port? Which fuse in the panel controls that? I check the manual, but it doesnt list anything specifically. 2004 Sierra 2500HD

    Im sitting in the truck on the wireless connection.
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  2. 04-30-2008 #2
    umbrae
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    If any one else has this problem, its the cigarette lighter fuse.
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  3. 04-30-2008 #3
    Texsrt4
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    yeah, sorry. could have told you that. my father's truck continues to pop those things. one of these days im going to have to hunt down the short
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