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  1. J

    Drivetrain

    Brand new 2012 GMC diesel dually... bought to tow a gooseneck trailer. I broke it in gently for 10k miles. Then when I hooked up and loaded my gooseneck car hauler, it had a violent drivetrain vibration under heavy load. The dealer can't fix it! They say GMC is working on the problem! Meanwhile...
  2. J

    Hi

    Hello everyone! Nice to meet you all)
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