Reviewed By justin s (ARVADA, CO) Reviewed for a 2002 GMC Sierra —11/20/2013 9:35 PM
Kind of hard to install but I got it too where it will work just fine. Great product besides that. Would recommend this to anyone that needs one.
Reviewed By Bob J (Springville, UT) Reviewed for a 2002 GMC Sierra —5/17/2013 6:10 AM
I've long been skeptical of the tunes you might get from the simple programmers but relented to try it out on my GMC 6.0 gas it worked flawlessly, easy to use, simple and straight forward. I had the info in and its never run as smooth and started as fast, a 1 second crank and its running no hesitation, most of all the tires now match the speedo. I'm a believer. Bob J.
Reviewed By Richard C (Temple, TX) Reviewed for a 2002 GMC Sierra —3/16/2013 7:35 PM
This programmer really "wakes" my Duramax up! The Extreme setting gives you the performance. Tow mode allowed me to pull my 35' 5th wheel TT at 75 - 80 with out a strain, getting 10+ per gallon. Enconomy mode boosts mileage an easy 5 to the gallon, if you can keep from playing with the wanna bees, cause even the economy mode wakes the engine up! Making this purchase was one of the best automotive moves I've made since I bought the truck in '02.