Welcome to GT Kraft's Hummer H3 Tuning Specifications page. Here, you can select your Hummer H3 model and generation to access the finest ECU tuning files on the market.
Our engineers are dedicated to developing tuning files that push the boundaries of performance while ensuring the utmost safety. We prioritize quality and reliability, making us the go-to choice for many Hummer H3 owners.
Our services include fast file service for stage 1 & 2, Pop & Bang, stage 3 and 4 projects, and much more. We also specialize in gearbox/TCU tuning for Hummer and other brands. Register now and experience the GT Kraft difference in your Hummer H3.