HPT GM E93 Global B ECM Upgrade (ECM UNLOCK) (*VIN & Original ECM Required*)

Open the Door to Custom Tuning for Your 6.6L GM HD Truck

Your Silverado or Sierra HD works hard. Give your tuner the calibration access needed to tailor it to your build with the HP Tuners GM E93 Global B ECM Upgrade. Designed for supported 2024–2026 trucks with the 6.6L L8T gas V8, this one-time service prepares your original engine controller for custom diagnostics and tuning through HP Tuners’ VCM Suite.

Whether you are planning a performance build or want a calibration developed around your truck’s specific setup, this upgrade is the starting point. Once your serviced ECM is reinstalled and licensed, compatible HP Tuners equipment lets you scan, data log, read, edit, and write supported engine calibrations through the OBDII port.

Why Choose This Upgrade?

• Enable custom calibration access: Prepare your supported E93 Global B controller for tuning with VCM Editor and diagnostics with VCM Scanner.
• Keep your original ECM: Upgrade the factory controller instead of purchasing a replacement computer.
• No relearns when returned to its original truck: No immobilizer relearn, crank relearn, or “Replace ECM” procedure is required.
• Convenient access after servicing: Perform supported tuning and diagnostic work through the vehicle’s OBDII port.

Vehicle Fitment

• 2024–2026 Chevrolet Silverado 2500/3500: 6.6L L8T gasoline V8 with the E93 Global B ECM.
• 2024–2026 GMC Sierra 2500/3500: 6.6L L8T gasoline V8 with the E93 Global B ECM.

Confirm your VIN and controller before ordering. Not for Duramax diesel engines, Silverado/Sierra 1500 models, or earlier non-Global B E93 controllers.

What You Need

• Your vehicle’s VIN and original E93 Global B ECM. The controller must be removed and sent in for servicing.
• A compatible HP Tuners MPVI3 or MPVI4 interface, sold separately.
• The latest version of VCM Suite BETA.
• 6 Universal Credits to license the ECM, sold separately and not included in the upgrade price.
• A suitable custom calibration developed for your vehicle and modifications.

Important Purchase Information

This is a send-in ECM upgrade service, not a replacement ECM, handheld tuner, credit pack, or preloaded performance tune. The upgrade enables tuning access; it does not add horsepower by itself. Results depend on the calibration and vehicle setup. Transmission tuning, controller services, and licensing are separate where required.

Plan for vehicle downtime while your original ECM is being serviced. The upgraded controller is intended to return to the same vehicle. MPVI, MPVI2, and MPVI2+ interfaces are not compatible with this Global B application.