Does correcting the pinion factor for 35" tires affect the transmission in any way. I can live with the speedo being off a bit but if the transmission needs the correction then I will have it done.
The reason I ask is a freind with a Duramax swears the allison transmission must be programmed for the right size tires or the shift points are off.
The reason I ask is a freind with a Duramax swears the allison transmission must be programmed for the right size tires or the shift points are off.