Not sure which 2011 GMC Sierra Power Programmers & Performance Tuners are right for you? We have over 2568 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:
"Installed this programmer a couple weeks ago on my 2011 GMC Sierra 1500 4x4 crew cab. Have only used the performance quick tune and disabled speed limiter, but so far very impressed on how well it performs. Haven't calculated how much MPG gain yet... expected 3-4. Other additions include Airaid CAI and TBS(also purchased from this site) and Flowmaster turndowns. Definitely will buy again for future vehicles." —Kody D from Harvey, LA bought a Superchips Flashpaq Tuner for a 2011 GMC Sierra.
"Not sure yet but will let you know after March 3,2012 road trip to Florida and back" —Dean U from South Grafton, MA bought a Hypertech Max Energy Programmer for a 2011 GMC Sierra.
"Gives the power and adjustability I was looking for. Whether pulling a trailer or cruisin arround town, the Bullydog definately make my truck perform." —Reginald R from Beckley, WV bought a Bully Dog Triple Dog GT Tuner (49-State Legal) for a 2011 GMC Sierra.
"Great Product easy to use" —Edward S from Colorado Springs, CO bought a Hypertech Max Energy Programmer for a 2011 GMC Sierra.
"all that i can say is, great product. makes such a difference in the trans (in a good way) and all the little monitors can you have on ( i've got air intake temp, instant MPGs, and oil pressure) number 2 is really great increased my mpgs by 2 and also added more power. i have it at number 4 right now and found out it really kicks in at 3000 rpms and above but im hardly ever up there. and they upgraded my shippment to over night delivery which was nice of them. i'd say its well worth the money" —Zachary Y from Punta Gorda, FL bought an Edge CS Evolution Programmer for a 2011 GMC Sierra.
"Money well spent on adding a little extra power for better mpg and towing. Hypertech delivered exactly what they promised they were selling. Only con I would have is that they need to add more selections for the after market air intakes. Overall I really like it." —Jon W from Magnolia, AR bought a Hypertech Max Energy Programmer for a 2011 GMC Sierra.
"Great item!! Went from around 16-17 mpg right to 20-21.. Plus hauling my 24 ft goose neck trailer is a breeze... I recommend highly!!" —Jarad K from Beavertown, PA bought a Bully Dog Triple Dog GT Tuner (49-State Legal) for a 2011 GMC Sierra.
"Great product love my GT. I hav notice 4-5 mpg improvement also hav notice more horsepower an torque. I hav bullydog cold air intake,Gibson shorty headers, and exhaust system with flowmaster 10 series muffler!! I recommend this product to anybody looking for fuel improvement or to get more power out of their truck.." —Joseph R from Wahiawa, HI bought a Bully Dog Triple Dog GT Tuner (49-State Legal) for a 2011 GMC Sierra.
"Had an Edge on my last truck, an 06 F-150 FX4, this was easier to install. Got an improvement in gas mileage but sure wish it had the shift firmness option for my 2011 GMC Sierra. Hypertech said its available for other years just not the 11. Hopefulluy they will have an update/download at some point here in the near future." —Brian G from Ebensburg, PA bought a Hypertech Max Energy Programmer for a 2011 GMC Sierra.