08 Silverado Ring And Pinion Change Questions

[dlewis1111]

I am 99.9 percent sure that I am going to swap out my 3.42's for 3.90's. The actual mechanical process is no biggie. How about the electrical side of the house in respect to speedometer, ABS functionality, traction control, tranny shift points? I have a BlackBear tune, so I plan on shipping the modules back to get Justin to reflash for the new gearing, speedometer, and shifting. Has anyone that has already done this had any trouble with any other systems as a result, and what did you have to do to correct it? Thanks.

[brims]

I'm pretty sure Justin can type any number he wants into the software and program the computers with that.