I have a 2008 GMC Sierra with the 5.3 engine and 33 inch tall tires running the Diablo tune.
I just put 4.10 gears in my truck and started getting the ABS light.
Using my Diablo Predator u1794 running release 9r31, I cleared the code and modified the tune to account for the 4.10 gears. After about 5 minutes of driving with the modified tune the ABS light came back on. I used to see all kinds of posts about the Predator not changing gear ratio. I have that option in my Predator. However, it does not appear to be taking effect. Do I need a custom tune to fix this issue?