Just installed a lift kit, 4,88 gears and 36 inch tires plus an HP tune where I also calibrated the tire and gear settings.
Now ABS light comes on and when watching wheel speeds with Tech2 front and rear wheel speeds are different by 2 mph which is what turned the abs light on.
I fixed the problem by chaning the tire size in the abs module using the Tech2 until the front and rear wheel speeds agreed.
Is this a bug or do I have to do this any time we change gears and tires?