This is an amazing upgrade for your vehicle! It fits GMC and Chevrolet HD models from 2001 to 2019 with a 6.6L Duramax engine. You can upgrade from Single or Multi - Tune to SOTF using an EFI - Live device already connected to GDP. Part Number: GDPGMUP - GRD.

Using this upgrade is easy. First, make sure your EFI - Live device is already connected to GDP. Then, follow the prompts on the device to upgrade from Single or Multi - Tune to SOTF. When using it, always ensure your vehicle is in a safe and stable condition. For maintenance, keep the EFI - Live device clean and store it in a dry place. If you encounter any issues, don't hesitate to contact our customer service.