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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7
or building a higher horsepower truck
without removing it from the vehicle
or exchange of the TCM unlocking
This ECM upgrade kit enables read
2024-2026 Duramax L5P Transmission Tuning Package Tuning Packages or building a higher horsepowerThe 2020 2026 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
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