The 2020, 2021, 2022 and 2023, 2500 and 3500 HD Silverado/Sierra's equipped with the 10-Speed Allison transmission are known for their great performance while towing. While this transmission is in many ways an improved version of the 6-speed Allison. There is still a bit to be desired when it comes to shifting in high performance senarios. With custom TCM tuning we can decrease the time between shifts as well as improve the clutch holding capacity by increasing line pressure electronically. This will not only make a more durable, better feeling, and better driving transmission. It can also help keep the engine in the ideal RMP range to utilize all of its potential power.
The Pre-Tuned TCM Replacement is designed for users that already own an HP Tuners MPVI2, MPVI3, or RTD+ Flash tool. The flash tool is still required for transferring trim files to the pre-tuned TCM. 10-Speed transmission tuning can also be utilized with and without the RatioTek shift kit installed on the vehicle. If you don't own one of the HP Tuners flash tools listed then you will need to purchase the REPLACEMENT T93 & TCM TUNING FOR 2020-2023 (L5P) ALLISON TRANSMISSION W/ HP TUNERS HARDWARE AND CREDITSAllison 10-Speed Transmission Tuning
The 10-Speed Allison found in your 2020-2023 L5P Duramax is known for its smooth shifts and great performance while towing. However, it still leaves a bit to be desired when it comes to shifiting in high performance senarios. It can fall behind due to its drawn-out shifts and its weaker clutch holding strength. Changing the factory calibration is especially important when you modify your truck and/or install ECM Tuning. Custom TCM Tuning gives you quicker shift changes, smoother operation, and an overall better driving experience.
This package requires the use of an HP Tuners MPVI2, MPVI3 or RTD+ Flash Tool. If you do not already own one of these flash tools then you will want to purchase the REPLACEMENT T93 & TCM TUNING FOR 2020-2023 (L5P) ALLISON TRANSMISSION W/ HP TUNERS HARDWARE AND CREDITS tuning package.
What’s the difference between Mild and Aggressive Transmission Tuning?
Smooth Shift Points is the best choice for you if you . . .
Want a similar feeling shift schedule to stock
Have a near-stock truck with stock tire size and stock turbo.
Installed a Box Tuner
Are an “Everyday Diesel Guy”
Use your truck as a daily commuter
Looking to get the best fuel economy possible
Aggressive/Elevated Shift Points is the best choice for you if you . . .
Have an upgraded turbocharger
Run 35”+ size tires
Prefer higher RPM operation or holding the gear longer
Installed custom engine tuning
Why do you need TCM Tuning?
Works with any ECM Tuning to provide smooth shifting and superior driveability
Torque converter lockup strategy helps you put power to the ground when you need it the most
Improve clutch holding capacity with increased line pressure
Makes your truck feel more powerful
Prevents short-shifting in performance applications
Ensures that your engine is operating within its preferred rev range
TCM Tuning is especially important for trucks with:
Any ECM Tuning, Box Tuner, or Throttle Booster
Larger tires (35”+)
Modified turbo(s)
Built transmission
Any modification that impacts operating RPMs
Towing & Performance
Use the wider torque curve provided by ECM Tuning
Keep your truck in its power band when lugging up a grade
Quicker shifts mean less time between gears and more time putting power to the ground
Optimize your aftermarket performance parts
