GM T93 TCM Service (Global B) - Upgrade Only

Add transmission tuning to your Global B GM. The Global B T93 transmission computer, used with GM's 10-speed automatic, has to be upgraded before it can be tuned. This one-time HP Tuners send-in service upgrades your original TCM so you can calibrate, data log and flash it through the OBDII port.

This is a send-in service. Your TCM has to come out of the vehicle and ship to HP Tuners, so the vehicle will be down while it's away. Please read this whole page before ordering.

Will it work on my vehicle?

This service is for Global B vehicles with the 10-speed automatic and the T93 TCM, including:

• Cadillac CT5-V, CT5-V Blackwing, CT4-V Blackwing and Escalade-V
• Refreshed (2022 and newer) Chevrolet Silverado 1500 and GMC Sierra 1500
• 2021 and newer Chevrolet Tahoe and Suburban, GMC Yukon, and Cadillac Escalade
• 2024 and newer Chevrolet Silverado and GMC Sierra 2500HD/3500HD 6.6L Duramax (L5P) with the 10-speed

Check the label before you order. HP Tuners supports Global B T93 TCMs with service numbers 24049788 and 24056863, which covers every Global B T93 known to date. The service number is printed on the label of the TCM. If your label shows a different number, your TCM is not yet supported. Older, non-Global B T93 TCMs (2019-2022 Silverado and Sierra 1500, 2020 and newer Camaro, 2020-2023 HD trucks) don't need this service at all. They upgrade through the OBDII port at no charge.

What else you'll need (sold separately)

• 4 Universal Credits to license the T93 TCM.
• An HP Tuners MPVI3 or MPVI4. Global B vehicles do not work with the MPVI2 or MPVI2+.
• The latest VCM Suite BETA software (free from HP Tuners).

How it works

1. Confirm your vehicle is covered and place your order.
2. Our team emails you the order number and the HP Tuners shipping form.
3. Remove the TCM, pack it carefully with the completed form inside, and write the order number on the outside of the box.
4. Ship it to HP Tuners with any carrier. Shipping to HP Tuners is the customer's responsibility; the shipping charged at checkout covers the return trip.
5. HP Tuners upgrades the TCM and ships it back.
6. Reinstall it, license it with 4 Universal Credits and start tuning.

Ship to:
HP Tuners, LLC
ATT: GM T93 TCM Service (Global B)
[Your order number]
711 Dartmouth Lane
Buffalo Grove, IL 60089

Wait for our email before you ship. Please don't send your TCM until you have the order number and shipping form.

Before you ship: important

• This service is for your original TCM going back into the same vehicle.
• Do not install and relearn a spare TCM while yours is away. If you do, your upgraded original will no longer work in the vehicle.
• After reinstalling, connect with VCM Scanner and read and clear codes first.
• Once upgraded, other tuning or calibration tools can't be used on the TCM. Factory service tools and scan tools keep working, and you can return to stock any time with VCM Suite.