GM E66 ECM Service (Global B)

E66 ECM Tuning Service for 2021+ GM 3.0L Duramax LM2 by ZackTuned

Unlock unparalleled performance for your 2021+ GM vehicle with ZackTuned’s E66 ECM Tuning Service. This send-in service enhances your E66 ECM, enabling advanced tuning and diagnostics via VCM Suite (BETA). Maximize power, efficiency, and drivability for a superior driving experience.

Supported GM Vehicles

• 2022-2022.5 Chevrolet Silverado 1500 3.0L Duramax LM2
• 2022-2022.5 GMC Sierra 1500 3.0L Duramax LM2
• 2021-2023 Chevrolet Suburban 3.0L Duramax LM2
• 2021-2023 Chevrolet Tahoe 3.0L Duramax LM2
• 2021-2023 GMC Yukon 3.0L Duramax LM2
• 2021-2023 Cadillac Escalade 3.0L Duramax LM2

For other Global B applications, explore additional compatibility options.

Upgrade Process

1. Remove your E66 ECM and ship it to ZackTuned for expert upgrading.
2. After the upgrade, your ECM will support full calibration, logging, and scanning via the OBDII port.

No Additional Steps Required

• No IMMO Relearn
• No Crank Relearn
• No “Replace ECM” Function in VCM Scanner

This hassle-free process minimizes downtime and simplifies installation.

Why Choose ZackTuned?

• Full Tuning Support: Unlock advanced features for enhanced performance.
• Professional Service: Expertly upgraded for seamless tuning integration.
• Simplified Installation: Ready-to-use ECM with no extra steps required.

Upgrade your 2021+ GM 3.0L Duramax LM2 vehicle with ZackTuned’s E66 ECM Tuning Service and unleash its full potential for power and efficiency.