GDP Tuning Package (17-23 GM Duramax L5P 2500/3500)

Includes

• GDP Support Package Tuning
• HP Tuners Unlock Tool
• HP Tuners MPVI3
• 8 tuning credits.

Fitment

2017-2023 6.6L Duramax

Note

Tune files are built to order and are typically completed within 24-48 hours, however depending on the current order volume of the tuners please allow up to 1-3 business days to ensure your files are completed by when you need them! Highly modified vehicles have longer wait times due to their complexity, wait times on these applications can be 1-5 business days.

Can bus connectors are required when tuning an L5P Duramax, they can be purchased below

Works with L5P and L5D trucks.