The 2017-2023 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. These PreTuned TCMS are the perfect solution!

NO CORE CHARGE - If you'd like to return your Stock TCM for STORE CREDIT, you will get $200 for the T87A and $250 for the T93.

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

What’s the difference between Standard and Elevated Transmission Tuning?

Standard Shift Points is the best choice for you if you . . .

1. Want a similar feeling shift schedule to stock
2. Have a near-stock truck with stock tire size and stock turbo.
3. Installed a Box Tuner
4. Are an “Everyday Diesel Guy”
5. Use your truck as a daily commuter
   
6. Looking to get the best fuel economy possible

Elevated Shift Points is the best choice for you if you . . .

1. Have an upgraded turbocharger
2. Run 35”+ size tires
3. Prefer higher RPM operation or holding the gear longer
4. Installed custom engine tuning

NOTE: For 2020-2023, This package requires the use of an HPTuners MPVI3 Flash Tool. If you do not already own one of these flash tools then you will want to purchase the MPVI3 or use a friends. You can Purchase one HERE