Has anyone found a reputable dealer that can perform an accurate pinion reset on a 2006 Liberty CRD? Or, does anyone know of an aftermarket scan tool that could be of some help?

My local dealer charged me $50 to change the wrong one. I tried to bring them in an email I got from Sir Sam, and he gave me fuss. I am going to try another dealer soon. I would like my speedo to be more accurate to better make use of my custom tow tune.

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2006 Sport, GDE FT Eco Tune, Custom Trans Tune
2015 Ram 1500 Big Horn EcoDiesel, GDE Hot Tune