We make the best performance chips for Hummers! Vertex adds power and saves you gas everyday! We have the best Hummer performance modules available. Our chips are guaranteed to work with your vehicle and are engineered to improve your Hummer’s engine performance. You will love your new Vertex Hummer Performance Module. Vertex is one of the only suppliers and manufacturers of Hummer Performance Chips in the USA. Our power modules will enhance your vehicle's overall feel when driving. The reason our Hummer Performance Modules are the best is because we manufacture them ourselves, in house, proudly in the U.S.A! We carry chips for all Hummer models! We guarantee our chips will be the best upgrade you could do to your vehicle!