Commander Tune Bundle (2020-2023 L5P Duramax)

The Commander Tune Bundle (2020-2023 L5P Duramax) is built for truck owners who demand real power, better efficiency, and complete control over tuning. This all-in-one package includes everything needed to unlock, tune, and optimize both the ECM and TCM, delivering maximum performance for daily driving, towing, and high-output applications.

At the core of this bundle is The GDP Commander, a powerful tuning device that simplifies the process by handling ECM and TCM unlocking and flashing with ease. Paired with custom DIESELR tune files and expert tuning support, this package lets you fine-tune your truck for stronger performance and smoother operation. With Shift-On-The-Fly (SOTF) adjustments via the steering wheel, switching power levels to fit any driving condition has never been easier.

What’s Included:

✔ The GDP Commander – Unlock and flash both ECM and TCM in one step. ✔ Custom DIESELR Tune Files – Five power levels built for real-world performance:

• Level 1: Stock Power

• Level 2: 50+ HP

• Level 3: 80+ HP

• Level 4: 120+ HP

• Level 5: 180+ HP ✔ Custom Tuning Support – Full remote tuning assistance from industry professionals. ✔ SOTF (Shift-On-The-Fly) Through Steering Wheel – Change power levels instantly while driving. ✔ 20 Universal Credits – Required to unlock and flash the ECM. ✔ Transmission (TCM) Tuning – Refines shift quality, torque management, and overall drivability. ✔ T93 TCM Harness – Ensures proper communication with the TCM for seamless tuning. ✔ Exhaust + Downpipe – Increases airflow, reduces backpressure, and enhances engine efficiency. ✔ EGR Upgrade Kit – Boosts reliability and reduces engine restrictions. ✔ CAN Bus Plug – Prevents system errors by replacing unplugged components.

How It Works:

1. Plug in The GDP Commander – Unlock and flash your ECM/TCM effortlessly.

2. Select Your Power Level – Towing, daily driving, or max output—adjust as needed.

3. Flash and Drive – Experience stronger power, improved shifting, and better efficiency instantly.

Why Choose the Commander Tune Bundle (2020-2023 L5P Duramax)?

✔ Complete Tuning Package – Everything needed for tuning, exhaust, and ECM/TCM unlocking. ✔ No Guesswork – Includes all required components in one bundle. ✔ SOTF Adjustments – Switch power levels in real-time using the steering wheel controls. ✔ Stronger, Smoother Shifting – TCM tuning keeps up with increased horsepower. ✔ Trusted Performance Gains – Backed by expert tuning support.

Unlock the Full Potential of Your L5P Duramax

Factory tuning limits your truck’s capabilities. The Commander Tune Bundle (2020-2023 L5P Duramax) gives you real power, better efficiency, and total tuning control—all in one package.