You can find the chip tuning file for your GMC Savana 2003 -> 6.6 V8 365hp 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 Savana 2003 -> 6.6 V8 365hp vehicle is the result of a special product by EcuPrime Engineers. In addition, we can increase the power of your vehicle from 365 HP to 390 HP, 894 Torque to 930 Torque.