2000 Silverado ABS and Parking brake lights

[coreystallings]

I have a 2000 Silverado CAI, Flowmasters, no cats, DIABLEW TUNED on 305 40 22's, keep getting the abs and parking brake lights on the dash. Any suggestions or help will be much appreciated!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[06MonteSS]

you need to set the tire size correctly...

it's already changed in the custom tune to the same value you had before... but maybe that's not the correct value...

modify the custom tune, change the tire size, and reinstall it with your change and see if that fixes it...