OBD II Delete Tuning Package | GM/Chevy Duramax LM2 3.0L | 2020-2022

GM/Chevy Duramax LM2 OBD II Delete Tuning Package

This all-in-one tuning kit for LM2 Duramax 3.0L includes everything you need to flash proper delete tuning to through the OBD-II port. No hunting for separate hardware and no surprise credit requirements—just a clean, ready-to-run setup built specifically for 2020–2022 Silverado and Sierra 1500 trucks with the LM2 engine.

Made for off-road applications, this package lets you read your factory (stock) file, get a delete calibration built from it, and flash the updated tune straight to your ECM—without bench flashing.

What’s Included

OBD2 Flash Tuning Interface (Hardware)
Plugs into your truck’s OBD-II port to read your stock file, flash tuning, and support data logging. You get direct ECM access without pulling the ECU.

LM2 Delete Tune File (2020–2022 Sierra/Silverado)
A custom calibration created from your original stock file for smooth, clean operation—avoiding common issues like fan problems, warning lights, and drivability quirks.

6 Tuning Credits (Included)
All required credits are included in the bundle, so you can flash immediately with no extra purchases.

Tune Levels Available

Choose one power level, or get all available levels together (not switch-on-the-fly).

• Stock Optimized – +0 HP (factory-like power with improved drivability)

• Tow – +20 HP (added torque for confident towing manners)

• Street – +40 HP (stronger acceleration and sharper throttle response)

• All Levels Bundle (includes all levels in one package; not SOTF switching)

Vehicle Fitment

• Chevrolet Silverado 1500 – 3.0L LM2 Duramax

• GMC Sierra 1500 – 3.0L LM2 Duramax

• Model Years: 2020, 2021, 2022

Benefits & Features

• Flash through the OBD-II port — no ECU removal required

• Tune is built from your original stock file

• Clean, stable operation without typical delete-related headaches

• Improved throttle response and stronger torque delivery

• Proper torque modeling for smooth shifting behavior

• Credits included for immediate flashing

• Data logging support for diagnostics and performance review

Emissions & Legal Use Disclaimer

For off-road use only. Not legal for use on public roads. Always confirm local and federal emissions regulations before purchasing or installing this tuning package.

Complete, No-Guesswork LM2 Tuning

If you want a simple, professional solution for Tuning LM2 Duramax 2020–2022, this OBD II Delete Tuning Package bundles the hardware, the custom file(s), and the required credits in one ready-to-use setup.