You can find the chip tuning file for your GMC Sierra 2014 - 2016 4.3 V6 285hp vehicle on our site. These files are created especially for you and handed to you. All our Tuning files are extensively tested on Dynometer. The development of the tuning file for your GMC Sierra 2014 - 2016 4.3 V6 285hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 285 HP to 305 HP, 413 Torque to 440 Torque.