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1999 GMC Sierra Power Programmers & Performance Tuners

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Latest Customer Reviews

Hypertech Max Energy Programmer Reviews


hypertech max energy programer

Reviewed By james b (CHAPMANSBORO, TN) Reviewed for a 1999 GMC Sierra —3/12/2016 12:49 PM

dose every thing it said it would . I can really tell a difference in performance!

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DiabloSport inTune i2 Tuner Reviews


i2 tuner

Reviewed By John J (LOCKPORT, IL) Reviewed for a 2012 GMC Sierra —12/5/2016 12:21 PM

This was my first time using a tuner and it was very easy to use and certainly made a difference in performance.

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


Buy it.

Reviewed By Michael P (Chehalis, WA) Reviewed for a 2006 GMC Sierra —9/23/2016 6:58 AM

After a month of solid research i decided to go with Bully Dog. Very easy install, excellent graphics, produces the best information from your vehicle. The Tow tune turned my sluggish truck into a sports car like feel to the drivetrain, great shifting, and perfect use of the 5.3 power band. If you have the chevy trucks made between 2000 and 2007 (classic) you should have this tuner.

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