HP Tuners GM T46 TCM Upgrade Service - Global B (TCM-GB-T46-U) - 2023-2026 Chevrolet Corvette C8 5.5L
Expand your Corvette C8 tuning capabilities with the HP Tuners GM T46 TCM Upgrade Service. Designed for supported Global B Chevrolet Corvette applications equipped with the Tremec T46 dual-clutch transmission controller, this send-in service unlocks transmission tuning through HP Tuners VCM Suite. Once your factory TCM has been upgraded, you'll be able to create complete ECM and TCM calibration packages, giving you greater control over your Corvette's shifting performance and drivability.
After the upgrade is completed, your original TCM supports advanced transmission diagnostics, calibration editing, data logging, and remote tuning workflows using HP Tuners' industry-leading software and hardware. Compatible exclusively with the MPVI4 interface, this service completes the HP Tuners Corvette C8 tuning ecosystem by enabling both engine and transmission calibration for supported applications. Whether you're optimizing a street-driven Stingray or dialing in a track-focused Z06, E-Ray, or ZR1, this upgrade provides the tools needed for comprehensive transmission tuning.
Features
- Send-in upgrade service for your factory GM T46 transmission control module (TCM)
- Enables transmission tuning support through HP Tuners VCM Suite
- Supports complete ECM and TCM calibration workflows
- Compatible exclusively with HP Tuners MPVI4 interface devices
- Read, edit, and write supported transmission calibrations
- Access transmission diagnostics and data logging
- Calibration editing through VCM Editor
- Advanced logging and analysis with VCM Scanner
- Supports remote tuning through RTD4 and the Tune Delivery Network (TDN)
- Retains your vehicle's original factory TCM
What's Included
- One HP Tuners GM T46 TCM Upgrade Service (Global B)
- Upgrade of your original factory GM T46 TCM
What You'll Need
- Your vehicle's original GM T46 TCM (this is an upgrade service, not a replacement module)
- HP Tuners MPVI4 RTD4 interface
- Latest version of HP Tuners VCM Suite BETA
- Six (6) HP Tuners Universal Credits after the upgrade is completed
Important Information
- This is a send-in upgrade service only. A replacement TCM is not included.
- Your factory transmission control module must be shipped to HP Tuners for modification.
- Compatible only with MPVI4 hardware.
- Once upgraded, the TCM can be licensed and tuned using HP Tuners software.
- This service enables complete engine and transmission tuning workflows for supported Corvette C8 applications.
Shipping Address for TCM Service
HP Tuners
ATT: GM T46 TCM Service (Global B)
711 Dartmouth Lane
Buffalo Grove, IL 60089
Fitment
- 2023 Chevrolet Corvette Z06 5.5L
- 2024 Chevrolet Corvette Z06 5.5L
- 2025 Chevrolet Corvette Z06 5.5L
- 2026 Chevrolet Corvette Z06 5.5L
Additional Supported Applications:
- 2020-2026 Chevrolet Corvette Stingray equipped with the GM T46 transmission controller
- 2024-2026 Chevrolet Corvette E-Ray equipped with the GM T46 transmission controller
- 2025-2026 Chevrolet Corvette ZR1 equipped with the GM T46 transmission controller
Important: Please allow up to 10 business days (plus shipping times) per ECM/TCM for processing once your module arrives at our location for service. (i.e., 2 ECMs = up to 20 business days). This estimate does not include return shipping time.
- Please note this service is required to tune supported 2020-2026 Chevrolet Corvette C8 vehicles equipped with the Tremec T46 TCM.
- This service is an upgrade-only service. Customers must send in their original T46 TCM. No replacement controller will be provided as part of this service.
- The GM T46 TCM Upgrade Service is compatible with MPVI4 devices only.
- All supported vehicles require the latest version of VCM Suite BETA and (6) Universal Credits for licensing.
- Please ensure you are sending ONLY the TCM. Do not include mounting hardware, brackets, fasteners, wiring, or other vehicle components. These items may not be returned.
- TCMs with significant physical damage, broken connectors, water intrusion, or evidence of prior repair attempts may not be eligible for upgrade service.
- This is a one-time upgrade that enables HP Tuners tuning functionality while maintaining normal vehicle operation and serviceability.
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