New member to this site...so hello all! I just purchased a 2008 Z71 LTZ with a 5.3L and 3.73s. I went to a local shop today to get an estimate on a 4-6" lift on 35s and was told that I will also have to purchase a programmer as well as change the gears. I have never lifted a truck before and really don't know if this is correct or not. Is this overkill and them just trying to up sale me on more products, or is this necessary to do? I do not want to tear this truck up by adding the lift/tires, but also don't want to spend 7k to get the look I am trying to achieve. Thanks for any input/suggestions ahead of time!!