2024-2026 Duramax AMDP HP Tuners Transmission Tuning

Fits

Note: This is a standalone transmission tuning file ONLY, expertly calibrated via the HP Tuners platform. If you are looking for the tune file and a device, Click Here!

Elevate your L5P’s driving experience with AMDP’s custom transmission tuning, designed to transform the sluggish factory logic into a crisp, performance-oriented powerhouse. Whether you're hauling heavy equipment or daily driving, this calibration optimizes line pressure and shift timing to ensure your Allison handles increased torque with ease and reliability. Experience smoother engagement and superior holding power that keeps your Duramax in the sweet spot of the powerband.

IMPORTANT: 2024-2026 models require an Unlocked T93 Global B TCM via HP Tuners send-in service. Click Here!

We do not support lope tunes or smoke tunes.

Part Number: 24-L5P-T / 24-L5P-T-C

• Crisp, Firm Shifts: Eliminates sluggish factory shifting with faster, more positive engagement for improved drivability and reduced heat buildup.
• Enhanced Holding Power: Increased line pressure to securely handle added torque from engine tunes or modifications, extending transmission life.
• Customized Shift Points: Tailored for stock or larger tires, preventing lugging and optimizing throttle response.
• Better Towing & Efficiency: Firmer lockup, refined patterns, and removed unnecessary limits for confident hauling and potential fuel economy gains.

• Digital Transmission Tuning File

• Requires an Unlocked T93 Global B TCM (via HP Tuners Send-In Service).
• Requires AMDP HP Tuners RTD4/MPVI4 hardware.
• Requires 4 HP Tuners Credits for installation.
• Tuning is loaded exclusively via the TDN App.

Click here to view MPVI Flashing instructions