Not sure which 2007 Hummer H3 Performance Chips & Programmers are right for you? We have over 7429 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"did a lot of research before ordering the module, and was hesitant about install and outcome, well i was truly amazed on how quick and simple it was to install and how effective this Jet Module performs. My H3 felt sluggish all the time, low idle, and felt like a 10 ton truck, after the module the idle is better, pickup has improved and the fuel mileage has increased on the highway, feels more peppy, highly recommend it, thanks to Jay at AutoAnything for helping with the order! He did an amazing job!" —Rene R from Miami, FL bought a Jet Performance Module for a 2007 Hummer H3, 3.7L 5-cyl. engine.