E46 20-22 DMAX LM2 ECM UNLOCK SERVICES

Unlock the Full Potential of Your LM2 Duramax

The 2020–2022 LM2 3.0L Duramax comes from the factory with a locked E46 ECM, preventing tuning access. Our ECM Unlock Service provides a safe and effective way to unlock the E46 control module, allowing you to flash custom calibrations using HP Tuners or EFI Live.

This service is essential for anyone looking to tune their LM2 for improved power, drivability, or fuel economy. Whether you're installing performance upgrades or dialing in your setup for towing, unlocking the ECM is the first step toward full control of your Duramax engine.

The ECM must be removed and shipped to our facility, where it’s professionally unlocked and returned ready for flashing. Turnaround time is fast, and every ECM is tested before being shipped back to ensure integrity.

Compatible with all 2020–2022 Chevrolet Silverado and GMC Sierra 1500 models equipped with the 3.0L LM2 Duramax and E46 ECM.