I just did 2 tire size changes yesterday morning, one on a 2017 and the other on my 2019 classic. I wrote down and printed instructions just to be sure I followed them to a t. My truck was off about 2.8%, 2 mph at 70. I added 2.8% to the oem setting and programmed it. Had zero faults pop up. When I went to do the initialization, it wouldn't give me that option, on either truck. Cleared rolls information. Cleared the faults on all modules, even tho it didn't have any. Settings took on both trucks, speedometers are both accurate. My tire size was 275/65/20, the other guy was 35/12.50 (set circumference at 2714).
Is it possible that if you change the settings, you may not need to do all the abs stuff? Fwiw, the truck seems to perform better, feels stronger off the line and the shudder I had on take off seems to be gone.