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Diablosport inTune i3 Tuner (14-16 5.3L Sierra 1500)

Item S56G14-53
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Our Price

$419.95 (each)

FREE Shipping Market Price $478.99 You Save 12% ($59.04)

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      Video Review & Installation

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Boost Overall Performance, Torque and Horsepower
      • Compact Design w/ High-Resolution Display
      • Pre-Loaded Performance Programs
      • Legal 50-State CARB #D-770 Certified
      • Numerous Application-Specific Adjustable Parameters
      • Detects and Removes DTC
      • OBD-II Data Logging
      • Mac, Linux, and Windows PC Compatibility
      • ‘’Easy Tune’’ Mode Quick Installation
      • Fits All 2014-2016 5.3L GMC Sierra 1500s


      Boost Vehicle Performance. When looking for a tuner that delivers optimal overall performance, increased horsepower and torque, the Diablosport inTune i3 Tuner is a must-have. The handheld tuner also features a high-resolution touchscreen display for better navigation when selecting the preferred adjustable parameter. Furthermore, it is CARB #D-770 Certified to ensure that you pass the Smog Check Program.

      Save on Gas. Once you fit your Sierra 1500 truck with the Diablosport inTune i3 Tuner, be ready to enjoy improved fuel economy. The professionally designed performance tune files enhance the thermal efficiency of your truck’s engine. This attribute boosts your overall fuel economy, saving you hard-earned money.

      Compact Design and Display. The Diablosport inTune i3 Tuner is highly portable thanks to its compact design. Its compact design also features rugged edges for a firm grip. Further, the high-resolution display allows for easy navigation of the tuner.

      OBD-II Data Logging. The i3 Tuners from Diablosport LLC are accompanied by an OBD-II cable in the box. The cable offers secure and fast data logging once it is plugged into your Sierra 1500, enabling you to check and delete diagnostic trouble codes (DTCs).

      Preset Dyno-Tested Tunes. The Diablosport inTune i3 Tuner comes with dyno-tested and professionally calibrated tunes. Together with the preset dyno and street-tested programs, they give your Sierra horsepower gains and enhanced torque.

      Computer Compatibility. Upon installing the Diablosport inTune i3 Tuner, you can connect to your home wireless network for software updating purposes. The tuner is also compatible with Linux, Windows and Mac, allowing for file transfers.

      Application. Diablosport's inTune i3 Tuner fits all 2014-2016 5.3L GMC Sierra 1500 trucks.

      Tuner Adjustable Parameters

      • WOT Fuel Adjustment
      • WOT Spark
      • Idle RPM
      • Rev Limiter
      • Shift Points
      • Shift Firmness
      • Tire Size
      • Cooling Fan Control
      • Electronic Throttle Response

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      Shop All Truck Tuners



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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Tuner
      • (1) OBD-II Cable
      • (1) USB Cable

      Customer Reviews (85)

        Questions & Answers

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        Will It Fit My Sierra 1500

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