Bosch T93 TCU Tuning
Transmission controller used in 11 supported models from 3 makes.
Cadillac with the Bosch T93
All Cadillac tunes- Cadillac CT62020+2.0T, 3.0 V6, 3.6 V6, 4.2 V8 TT, 4.2 V8 TT (CTS-V)AutoTuner
- Cadillac Escalade2020+6.2i V8 (L87)AutoTuner
- Cadillac XT52016+2.0TAutoTuner
Chevrolet with the Bosch T93
All Chevrolet tunes- Chevrolet Express2018+6.6i V8 (L8T)AutoTuner
- Chevrolet Low Cab Forward2021+6.6i V8 (L8T)AutoTuner
- Chevrolet Silverado2019+GMT T1XX · 3.0 Duramax (LM2), 5.3i V8 (L84), 6.2i V8 (L87), 6.6 Duramax (L5P), 6.6i V8 (L8T)AutoTuner
- Chevrolet Suburban2021+3.0 Duramax (LM2), 5.3i V8 (L84), 6.2i V8 (L87)AutoTuner
- Chevrolet Tahoe2021+3.0 Duramax (LM2), 5.3i V8 (L84), 6.2i V8 (L87)AutoTuner
GMC with the Bosch T93
All GMC tunes- GMC Savana2018+6.6i V8 (L8T)AutoTuner
- GMC Sierra2019+3.0 Duramax (LM2), 5.3i V8 (L84), 6.2i V8 (L87), 6.6 Duramax (L5P), 6.6i V8 (L8T)AutoTuner
- GMC Yukon2021+3.0 Duramax (LM2), 5.3i V8 (L84), 6.2i V8 (L87)AutoTuner
About Bosch T93 tuning
The Bosch T93 transmission control unit is supported in 11 models from Cadillac, Chevrolet, GMC. We read, modify, and flash it with AutoTuner, then verify the result on our Dynojet 424xLC2 in Jenison, MI. Transmission tuning sharpens shift timing, firmness, and torque limits to match your power.
Don't See Your Vehicle?
These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.