Description
GM T93 TCM Unlock & Programming Service – Global B (10L80 / 10L90)
2021 and newer GM Global B vehicles use the T93 transmission control module. It cannot be unlocked through the OBD-II port — the module has to be removed from the vehicle and sent in for a one-time upgrade before any transmission calibration can be written. This is that service. Once it comes back you have full read, write, log and scan access through the OBD-II port with HP Tuners.
Supported Vehicles (T93, 10-speed, Global B)
- 2021–2026 Chevrolet Silverado 1500 / GMC Sierra 1500 (10L80)
- 2021–2026 Chevrolet Tahoe & Suburban, GMC Yukon / Yukon XL
- 2021–2026 Cadillac Escalade & Escalade ESV
- 2022–2026 Cadillac CT5-V Blackwing (automatic)
- 2023–2026 Cadillac Escalade-V
- Other GM Global B models with the 10L80 / 10L90 10-speed — send us your VIN and we will confirm before you buy
How It Works
- Place your order. Enter your VIN in the box on this page and check the box confirming the TCM is the original module out of that vehicle.
- Shipping instructions are emailed to you once your order is complete — do not ship anything until you receive them.
- Remove the T93 TCM from your vehicle (follow your service manual) and package it safely.
- Write your order number on the outside of the box and ship it to the address in your shipping instructions email.
- The unlock is performed by HP Tuners. The module is upgraded, tested and shipped back to you.
- Reinstall it, license the TCM with 4 HP Tuners Universal Credits, then read/clear DTCs in VCM Scanner and start tuning.
Important Notes
- You must send in the original TCM from the vehicle it is going back into — not a spare.
- While your TCM is out, do not install and relearn a spare TCM. Doing so will keep the upgraded module from working when it returns.
- Global B tuning requires an MPVI3 or MPVI4 interface. MPVI2+ and older devices are not compatible.
- Licensing credits (4 Universal Credits) are not included in this service and are purchased separately.
- One-time upgrade. Factory dealer diagnostics and VCM Scanner keep working normally, and you can return to the stock calibration at any time.
- Processing time does not include shipping time.
- Off-road and competition use only.
Need the Tune Too?
We tune these platforms every day — see our Cadillac Escalade tuning, Cadillac V-Series tuning and GM, Chevy, GMC & Cadillac remote tuning pages. Add transmission tuning to your tune order and we will calibrate the 10-speed once your T93 is back in the truck.
Ship To
N2 Speed
1461 SW 30th Ave Bay 16
Pompano Beach, FL 33069
(954) 406-8550 · sales@n2speed.com
