DIESELR MPVI3 E66 (Global B) Tune Files (2021-2025 Duramax LM2 & LZ0 3.0L)

The DIESELR MPVI3 E66 Tune Files (2021–2025 Duramax 3.0L LM2 & LZ0) are engineered to give GM truck and SUV owners a proven way to improve drivability, throttle response, and fuel efficiency. Built on the HP Tuners platform, these calibrations are tailored for vehicles running the E66 ECM (Global B) and provide a reliable solution for the modern 3.0L Duramax lineup.

Compatible with both LM2 and LZ0 engines, these tune files work across a wide range of models, including the Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon, and Cadillac Escalade. Whether you’re running the 2021–2026 LM2 engine or the updated 2023+ LZ0, these files ensure safe and consistent performance.

Requirements

• Unlocked E66 ECM (Global B): Must be sent to HP Tuners for unlocking (sold separately).
• 6 Universal Credits: Required from HP Tuners to flash your tune (sold separately).
• MPVI3 Device: Required for flashing via HP Tuners VCM Suite.

Key Features

• Designed for GM’s E66 ECM Global B architecture
• Three power levels included
• Enhanced throttle response and efficiency
• Optimized for both LM2 and LZ0 engines
• Coverage for Silverado, Sierra, Tahoe, Suburban, Yukon, and Escalade

With the DIESELR MPVI3 E66 Tune Files (2021–2025 Duramax 3.0L LM2 & LZ0), you get a straightforward tuning package backed by Dieselr’s trusted support and tested calibration process.