Not sure which 2007 GMC Yukon XL 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:
"I added new tires and rims to my Yukon XL. It was driving awful until I used the Cortex Programmer. It allowed me to set tire height and choose the 87 Octane tuner as well. I took the speed limiter off too. It shifts smooth and gets better gas mileage than it did before I put the larger tires on. It has much more power and really drives much better. Thank you Autoanything and Superchips. Without it, I would have went broke putting gas in the vehicle or would have had to sell the new rims and tires." —Christopher T from Charleston, WV bought a Superchips Cortex Programmer for a 2007 GMC Yukon XL, 5.3L V8.