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  1. S

    2011 6.7 4x4 not engaging

    My bad, auto correct. Yes, it works with the hubs locked. The lines are all connected. Where is the vacuum pump location and what would be a good way to test it when you're in the middle of no where with limited tools haha. Might be stuck manually locking them till I get done with this job.
  2. S

    2011 6.7 4x4 not engaging

    Engageso with hubs locked. Lines are on to the hubs and not broken
  3. S

    2011 6.7 4x4 not engaging

    Yeah he tried saying that my headlights blew the body control module because it messed with the voltage. He must not have saw the relay harness
  4. S

    2011 6.7 4x4 not engaging

    So the tech was full of it when he said that even if I lock them manually, it won't make a difference because it's vacuum operated?
  5. S

    2011 6.7 4x4 not engaging

    The dash says it's in 4x4 and I hearit shift into it from under the truck it sounds like but the front tires have nothing. I'm told possibly vacuum line issue but where do I look? Ford won't touch the truck because it's tuned.

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