Commander Tune Bundle (2017-2019 L5P Duramax)

The Commander Tune Bundle (2017-2019 L5P Duramax) is built for truck owners who demand real power, control, and drivability. This all-in-one tuning package provides everything needed to unlock, tune, and optimize both the ECM and TCM for the ultimate performance upgrade. Whether you're after better throttle response, smoother shifts, or serious horsepower gains, this bundle delivers.

At the core of this package is The GDP Commander, a powerful tool that handles both ECM and TCM unlocking and flashing, eliminating unnecessary steps and making tuning effortless. With custom DIESELR tune files and expert tuning support, you'll have full control over your 2017-2019 L5P Duramax. Plus, with Shift-On-The-Fly (SOTF) adjustments via the steering wheel, you can instantly switch power levels to match any driving condition.

What’s Included:

✔ The GDP Commander – Unlock and flash both ECM and TCM with a single device. ✔ 20 Universal Credits – Required for ECM and TCM unlocking. ✔ Custom DIESELR Tune Files – Five performance levels built for real-world use:

• Level 1: Stock Power

• Level 2: 50+ HP

• Level 3: 80+ HP

• Level 4: 120+ HP

• Level 5: 180+ HP ✔ Transmission (TCM) Tuning – Refines shift quality, torque management, and performance. ✔ T87A TCM Harness – Ensures proper connection and communication with the TCM. ✔ SOTF (Shift-On-The-Fly) Through the Steering Wheel – Change power levels instantly while driving. ✔ EGR Upgrade Kit – Reduces restrictions and improves engine reliability. ✔ 5" Exhaust + Downpipe – Enhances exhaust flow for better efficiency and lower EGTs. ✔ CAN Bus Plugs – Prevents system errors by replacing unplugged components. ✔ Custom Tuning Support – Expert remote assistance throughout the tuning process.

How It Works:

1. Plug in The GDP Commander – Unlock and flash your ECM and TCM in one step.

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

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

Why Choose the Commander Tune Bundle (2017-2019 L5P Duramax)?

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

Take Full Control of Your L5P Duramax

Factory tuning limits your truck’s capabilities. The Commander Tune Bundle (2017-2019 L5P Duramax) gives you real power, better efficiency, and complete tuning control—all in one package.