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GMC Sierra DiabloSport Power Programmers & Performance Tuners

Powerful and efficient, your GMC Sierra is the ultimate vehicle when it comes to heavy-duty towing. Make your tough truck’s performance even more legendary by adding one of AutoAnything’s GMC Sierra DiabloSport programmers. These high-quality programmers allows you to custom-tune those factory settings and increase your ride’s power and fuel economy.
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Latest Customer Reviews

Range Active Fuel Management Disable Device Reviews

2014 GMC Sierra SLE 4.3 V6

Reviewed By Gary W (READING, PA) Reviewed for a 2014 GMC Sierra —12/7/2017 3:43 PM

I've only had it installed for 5 days so far but it is working as advertized. No more annoying V4 or the vibration that comes with it. Very happy with Range so far. I hope it keeps up, I don't see any reason why it would change.

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

Can tell a difference

Reviewed By Damon S (HENRYVILLE, IN) Reviewed for a 2009 GMC Sierra —11/22/2017 5:50 AM

Missed out on AutoAnything $50 rebate by 4 days:(! Make sure to have battery booster just in case. Bullydog updater not compatible with Mac, took multiple attempts to get the new download to the microSD card or for the pc to recognize the card.

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DiabloSport inTune i2 Tuner Reviews


Reviewed By Bobby M (Murfreesboro, TN) Reviewed for a 2014 GMC Sierra —11/2/2017 6:59 PM

Easy to use.Improves throttle response. Great for recalibration of speedometer.

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About GMC Sierra DiabloSport Power Programmers & Performance Tuners

Though your GMC Sierra already boasts unrivaled hauling abilities and a great ride, further enhance its functionality by equipping it with one of AutoAnything’s GMC Sierra DiabloSport tuners. The high-resolution, full-color touchscreens ensure convenient, easy use, and these programmers provide all the top power applications in one place. They’re pre-loaded with tunes for gas and diesel vehicles alike, and they also maintain a copy of your Sierra’s factory data for future restoration. DiabloSport tuners tap into your tough truck’s internal computer through the OBD-II port and use it to calibrate the most precise tunes, and each programmer includes all the necessary equipment for installation. Choose from AutoAnything’s unbeatable selection of DiabloSport programmers and tuners and enjoy our Free Shipping and 1-Year, Lower Price Guarantee with each purchase.