2017-2023 Duramax L5P Tune File Tipo_Only This one-time

This one-time

and long-term reliability whether you’re daily driving

Larger tires (35”+)

and performance use

Possible Fitment Modification Required:

2017-2023 Duramax L5P Tune File Tipo_Only This one-timePerformance Levels Southern Diesel Supply custom calibrations include size selectable power levels designed for everything from stock like operation to aggressive performance. Level 0: Stock Output Level 1: +30 HP Level 2: +80 HP Level 3: +135 HP Level 4: +160 HP Level 5: +210 HP With Shift On The Fly enabled, power levels can be changed instantly using factory steering wheel controls, allowing on demand adjustment without stopping or reflashing.