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  1. Help! DTC Codes, troubleshooting

    06-07 LBZ & LLY Duramax Powertrain
    :help:confused: Hey all, I just entered the weird zone yesterday. I changed the oil, every thing was fine, no problems before this. Just after the oil pressure came up, it started running crappy. Figured out it had gone into limp home mode. I replaced injector #4 about a month ago. Showing...
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