Hello All:
I just ordered my Pro Tuner (Haven't received it yet) and curious where I should start reading to fix my first issue with my 2004 Silverado 2500HD 4X4 with a 6.0
I swapped out the stock 245 70 16's for 295 70 16 BFG Mud Terrains and want to have an accurate speedometer and proper shifting.
I hope this is a good point to start playing with the new toy.
Thanks