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2003 GMC Yukon Performance Chips & Programmers

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Latest Customer Reviews

Bully Dog Triple Dog GT Tuner (49-State Legal) Reviews


2003 yokon 5.3

Reviewed By William L (Superior, WI) Reviewed for a 2003 GMC Yukon —9/10/2015 5:58 PM

WoW! I went from 12.5 to 16 in the city, using 91 oct on performance mode, shift points firm. Versus 87 oct in stock. It's how you drive it that matters. The driving coach is way cool. And it's fast too!

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Hypertech Max Energy Programmer Reviews


I'd buy it again

Reviewed By joe k (Davison, MI) Reviewed for a 2003 GMC Yukon —4/21/2014 8:17 PM

I like the Hypertech it was a little tricky to install the program but once I got it figured out....its well worth it...def noticed a difference.

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Jet Performance Module Reviews


Amazing, Inexpensive Real Power!

Reviewed By Robert L R (VALLEY, NE) Reviewed for a 2000 GMC Yukon —2/12/2016 9:15 AM

This is by far the first, best upgrade I've made to my Denali! Fairly easily installed (no thanks to GMC) and my 5.7 Vortec started right up with no codes. I experienced immediate increases in throttle response and overall power and drivability. Unbelievably, after a week or so of driving the vehicle, the power and responsiveness approved again! Puts me in mind of the old EPROM chips. I highly recommend this product to anyone looking for low dollar extra horses and low-end torque !

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