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  1. R

    2013 2500 DEF fluid problems

    I am having a problem with the check engine light coming on and dealership saying it is bad DEF fluid. First time they cleared check engine light and it came back on in a couple of weeks. Second time they said it was contaminated DEF fluid, that they needed to drain tank and flush lines but...
  2. R

    2013 2500 DEF problems

    I am having a similar problem with the check engine light coming on and dealership saying it is bad DEF fluid. First time they cleared check engine light and it came back on in a couple of weeks. Second time they said it was contaminated DEF fluid, that they needed to drain tank and flush...
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