HP Tuners GM E66 ECM Service (Global B)

This is a send-in service, which means you must first send us your original ECM. Please read this page in its entirety before purchasing.

Shipping address for send-in E66 ECM service (Global B): HP Tuners (ATT: GM E66 ECM Service [Global B]), 700 Eastwood Lane, Buffalo Grove, IL 60089

HP Tuners is now offering support for the GM Global B E66 ECM found in various 2021+ GM vehicles powered by the 3.0L Duramax engine (LM2 and LZ0 generations, models listed below). This one-time, send-in upgrade service is required to enhance capabilities in VCM Suite (BETA).

Unlock full diagnostics and tuning capabilities for GM Global B vehicles with HP Tuners’ VCM Suite (BETA). This one-time service upgrades your E66 ECM, enabling complete calibration, logging, and scanning via the OBDII port.

Supported 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
• 2022–2025 Chevrolet Silverado 1500 3.0L Duramax LZ0
• 2022–2025 GMC Sierra 1500 3.0L Duramax LZ0

Service Overview:

• One-time, send-in ECM upgrade service for Global B E66 ECMs
• Required for tuning via HP Tuners software
• No IMMO Relearn, Crank Relearn, or “Replace ECM” function needed
• After the upgrade, full access to calibrate, log, and scan your vehicle

Requirements:

• Physically remove your original E66 ECM and ship it to HP Tuners
• Download the latest version of VCM Suite BETA (free)
• Purchase 6 Universal Credits to license your ECM/vehicle
• Compatible with MPVI3 or MPVI4 interfaces only