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  1. V

    2008 GMC Brake Issues

    I missed the year of your truck originally. Yes there is no H0101 in LMM tunes. In that case I would check H0136, revolutions per mile.
  2. V

    2008 GMC Brake Issues

    Check your pulses per mile, H0101 in the speedometer section of the tune and make sure they aren't wacko. Very easy to overlook especially when running a script. Guess how I know.