wondering if anyone had a good trans tune stock trans 275/65 r 20 tires shift points are off kinda searches any help would be appreciated TIA 2012 silverado 4.8 4l60E
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wondering if anyone had a good trans tune stock trans 275/65 r 20 tires shift points are off kinda searches any help would be appreciated TIA 2012 silverado 4.8 4l60E
Blue cat, gear tire wizard and it would help if you post in the GM transmission area not the GM Diesel area.