HP Tuners GM E99 ECM Service (Global B)

HP Tuners' one-time send-in upgrade service for the GM Global B E99 ECM. This service is required to enable HP Tuners diagnostics and custom tuning access through VCM Suite BETA on supported E99-equipped Global B vehicles.

This is a send-in service. The vehicle's original E99 ECM must be removed and shipped to HP Tuners for upgrading.

Supported Applications

• 2020–2023 Chevrolet Corvette 6.2L LT2, non-Z06
• 2024 Chevrolet Corvette C8 6.2L LT2, non-Z06
• 2022–2026 Cadillac CT5-V Blackwing 6.2L LT4
• 2020–2023 Cadillac CT5-V 3.0L Twin Turbo LGY
• 2022–2026 Cadillac CT4-V Blackwing 3.6L Twin Turbo LF4
• 2023–2026 Cadillac Escalade-V 6.2L
• 2024–2025 Chevrolet Corvette E-Ray 6.2L hybrid

What You Need

1. This one-time GM E99 ECM Service (Global B).
2. The latest version of HP Tuners VCM Suite BETA.
3. 8 HP Tuners Universal Credits to license the upgraded E99 ECM/vehicle. Credits are sold separately.
4. An MPVI3 or newer device. The latest-generation HP Tuners MPVI4 is available here.

MPVI2+ and older-generation devices are not compatible with GM Global B vehicle support.

Service Notes

• The upgraded E99 ECM is tuned through the OBDII port using compatible HP Tuners hardware and VCM Suite BETA.
• Do not temporarily install and relearn a spare ECM while the original ECM is away for service. Doing so can prevent the upgraded original ECM from functioning when it is returned.
• Once upgraded, the E99 ECM requires 8 Universal Credits for licensing.
• After reinstalling the upgraded ECM, HP Tuners recommends connecting with the latest VCM Scanner and reading/clearing DTCs.
• No other tuning or calibration tools can be used with the upgraded ECM.
• VCM Scanner and compatible dealer diagnostic tools continue to function normally.
• The latest VCM Suite can return the ECM to stock calibration and/or update it to the latest stock calibration.
• No IMMO relearn, crank relearn, or Replace ECM function is required when the upgraded original ECM returns to the same vehicle.
• Processing time does not include shipping time and varies with HP Tuners' current controller-service workload.

Shipping

Send the original E99 ECM to:

HP Tuners, LLC
ATT: GM E99 ECM Service (Global B)
[YOUR ORDER NUMBER]
711 Dartmouth Lane
Buffalo Grove, IL 60089

Customers are responsible for inbound shipping to HP Tuners. The shipping charge associated with the service covers return shipping after modification.

Any additional hardware ordered with this service may be shipped with the upgraded ECM. If other hardware is needed sooner, order it separately.

Important

Controller services are performed at the owner's risk. HP Tuners is not responsible for the vehicle, powertrain, electronics, or how the modified controller is calibrated or used.