GDP 2020-2023 6.6L Duramax Custom Transmission Tuning Package

GDP 2020-2023 6.6L Duramax Custom Transmission Tuning Package

Package Includes:

• HP Tuners Unlocked T87 TCM
• HP Tuners MPVI3 (Optional)
• 4 HP Tuners Tuning Credits (Optional)
• GDP Transmission Tune

Note

• An HP Tuners MPVI3 & 4 Tuning credits are required to load the transmission tune into the vehicle