On Monday I took my truck to get my free oil change and my friend there told me there was a update flash he could run if I liked. So I did and my truck runs about 250 rpm lower know at any fix speed (cruise control). Lower rpm = higher mpg

 

What was the TSB #

 

I dont have my paper work with me

 

When you get that number please pass it along

 

Were you in a different gear when comparing speed & rpm? Possibly the flash changed the shift points?

Don't know what else it could have done. Assuming the torque converter was locked, gears are gears and won't be changed electronically.

 

We're waiting.