2024-2026 Duramax L5P Motor Ops HP Tuners 10 Speed Transmission Tuning

Fits

Note: All 2024-2026 L5P Duramax pickups are compatible regardless of trim level.

Get the most out of your 2024+ L5P Duramax by adding transmission tuning to efficiently put power to the wheels, improving driveability and performance. This calibration optimizes the Allison 10-speed to handle increased horsepower and torque while ensuring your 6.6L L5P stays on top of the turbo for crisp, reliable throttle response. Engineered for diesel enthusiasts who demand durability, this tune transforms your heavy-duty hauler into a more responsive and capable machine.

*The factory TCM must be sent to HP Tuners for a physical T93 TCM Unlock Service (Global B)

• Increased Transmission Line Pressure
• Revised Shift Schedule Logic
• Optimized Turbo Spool Band
• Improved Precision Shift Timing
• Redesigned Torque Converter Lock-up
• Direct Engine-to-Wheel Power Transfer

• TCM Service Required: The factory TCM must be sent to HP Tuners for a physical T93 TCM Unlock Service (Global B).
• Hardware Required: Flashing requires an HP Tuners RTD4 or MPVI4 device. (Sold Separately)
• Licensing: Requires (4) HP Tuners Universal Credits to license and flash the TCM.

• Click here to view Tuning Instructions