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  1. ZachM54

    Modified trans tune, range shift inihibited reverse

    I've been chasing this majority of summer. Running Mark's trans tuning to up the shift points and after driving a while and go to reverse it'll just show range shift inhibited. No codes on insight and no check engine lights. There is a P0742 code on the auocal tho. Clear code and then it'll go...
  2. ZachM54

    2005 Gmc 2500hd

    ZachM54 submitted a new Showcase Item: 2005 Gmc 2500hd Read more about this showcase item here...