Not sure which 2008 GMC Sierra Power Programmers & Performance Tuners are right for you? We have over 5642 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:
"Have had this product for a few months now and love it. Have seen a little change in my MPG. You can feel the power behind you when you take off. Would recommend the edge evolution for all trucks. Installation won't take long at all." —Eduardo D from Sugar Land, TX bought an Edge Evolution Programmer for a 2008 GMC Sierra, 5.3L V8.
"I think that the Edge is definitely the next step in programmers. I have used several plug-in chips in the past and the Edge's interface is so much more usable. Different driving styles and needs can be configured and the vehicle optimized. I would like to see more downloadable data from the Edge. I have several upgrades planned, and if the Edge allowed more downloads, then I could compare and contrast each upgrade with the different settings. Otherwise, I really like it." —Stephen W from Nashville, AR bought an Edge Evolution Programmer for a 2008 GMC Sierra, 5.3L V8.
"Ease of installation was real easy and could be done in about 15 minutes - had to call to get the right dash plate for my vehicle, but was promptly sent - free. The correct dash plate was a base grey and interior is the dull black/gray so had to paint to match. No big deal.
Programming is simple enough and guides you right through without any problems. Takes just a couple minutes each time you change programs.
Have tried each of the performance levels and have since left it on 4 (most aggressive). It definately changes shift points with pretty reasonable gains. Although advertised as up to 40+ hp, for my GMC gains are more like 20-22hp (if you go to their vehicle specific charts, you can see what yours will be). It didn't change my truck to a race car and throw you through the seat, but is a nice upgrade. Most folks seem to see the best fuel improvement at 3, but I'll say that so far on 4 that it also is improving 1-2mpg. I really can't say the true effects for feel and economy yet as I just bought my truck and only has 1,000 miles on it, so it's not even broke in. But if considering, I would say you won't be disappointed." —Dustin A from Garden City, MI bought an Edge Evolution Programmer for a 2008 GMC Sierra.
"Noticeable power difference, 0-60 time is much faster now. This device comes loaded with features. It only improved gas milage slightly though." —Trent S from Jensen Beach, FL bought an Edge CTS Evolution Programmer for a 2008 GMC Sierra, 6.2L V8.
"I was very pleased with the customer service in answering my questions,and shipping was very fast. When I bought the programmer it came with a free update to the full featured Max Energy programmer,however there was no instructions on Hypertechs website on how to go about getting the free upgrade other than a promo commercial that was not helpful. I eventually figured out how to upgrade it and flashed the ECM.
I have quite a bit more midrange power and have also picked up 1-1.5mpg. I am very pleased with how the programmer works and will do business with AutoAnything again." —Dustin D from Winder, GA bought a Hypertech Max Energy E-CON for a 2008 GMC Sierra, 8.1L V8.
"This is the second programmer I have owned by Hypertech and the results just keep surprising me. Product offers a variety of options and is great if you have larger wheel diameters than a stock set up." —Kevin W from Shelby Township, MI bought a Hypertech Max Energy Programmer for a 2008 GMC Sierra, 5.3L V8.
"The egde evolution is very nice. Works well, but because i have the 2500 6.0 6 speed, i cannot do the custom tune mode. So that really stinks. But besides that everything works well and looks great" —Garrett D from Hillsborough, NJ bought an Edge Evolution Programmer for a 2008 GMC Sierra, 6.0L V8.
"THE EDGE WAS A TOTAL SURPRISE TO ME. I WAS EXPECTING AN UPGRADE IN GAS MILEAGE WITH THE ECONOMY MODE. BUT EVER SINCE I WENT AND PURCHASED SOME PREMIUM GAS AND A BOTTLE OF OCTANE BOOSTER BECAUSE COSTCO GAS APPARENTLY DOESN'T HAVE VERY GOOD QUALITY GAS. THE GAS MADE MY 5.3L PINGED SO BAD WHEN I PROGRAMMED MY 08' GMC SIERRA TO EXTREME MODE. SO AFTER I PUT IN SOME OCTANE BOOSTER MY 5.3L BEAST CAME TO LIFE AND I COULDN'T BELIEVE HOW MUCH MORE HP IT HAD. I KNOW ITS ONLY LIKE 35HP BUT WOW IT MAKES ALL THE DIFFERENCE...I HAVE HAD IT IN EXTREME MODE WASTING EXPENSIVE PREMIUM LIKE ITS GOING OUT OF STYLE EVER SINCE...I WOULDN'T HAVE IT ANY OTHER WAY. I LOVE THE EDGE EVOLUTION AND THE NEW ENGINE BOOST IT HAS GIVEN ME. MAYBE SOMEDAY I WILL KNOW WHAT ITS LIKE TO GET GAS MILEAGE OUT OF IT. BUT FOR NOW I WILL KEEP IT IN EXTREME MODE. GOOD THING THAT I HAVE ROYAL PURPLE PROTECTING MY ENGINE BECAUSE I AM PUSHING THE ENGINE TO THE LIMIT FROM NOW ON...ONE OF THOSE I DON'T CARE WHAT IT COSTS I JUST WANT TO SEE HOW FUN IT COULD BE TO DRIVE WITH IT PURCHASES. THANK YOU EDGE. LOVE IT!" —Jake P from St George, UT bought an Edge Evolution Programmer for a 2008 GMC Sierra, 5.3L V8.
"easy intsall works great,easy to use and you can feel i big difference in hp" —Kristy B from Rome, NY bought an Edge Evolution Programmer for a 2008 GMC Sierra.
"the Edge, added a subtle power increase that was most noticeable when the trans didn't downshift on inclines I drive regularly. I bought it for towing, but I'll expect mileage to improve, as well." —Robert C from Colorado Springs, CO bought an Edge Evolution Programmer for a 2008 GMC Sierra, 6.0L V8.
"I installed this programmer on my 2008 GMC sierra and have been completely satisfied by the results. This is my second edge product and recccomend this product other as well. Keep up the good work... And autoanything is awesome!!!!!!" —Matt D from Browning, IL bought an Edge Evolution Programmer for a 2008 GMC Sierra, 5.3L V8.