GMT T1XX / 3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T)
Chevrolet Silverado OBD Unlock Patch
ECU access only. Performance tuning is sold separately.
Chevrolet Silverado OBD unlock patches
2026 Chevrolet Silverado GMT T1XX TCU OBD Unlock Patch
3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T) / GMT T1XX · AutoTuner Bench Patch
2025 Chevrolet Silverado GMT T1XX TCU OBD Unlock Patch
3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T) / GMT T1XX · AutoTuner Bench Patch
2024 Chevrolet Silverado GMT T1XX TCU OBD Unlock Patch
3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T) / GMT T1XX · AutoTuner Bench Patch
2023 Chevrolet Silverado GMT T1XX TCU OBD Unlock Patch
3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T) / GMT T1XX · AutoTuner Bench Patch
2022 Chevrolet Silverado GMT T1XX TCU OBD Unlock Patch
3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T) / GMT T1XX · AutoTuner Bench Patch
2021 Chevrolet Silverado GMT T1XX TCU OBD Unlock Patch
3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T) / GMT T1XX · AutoTuner Bench Patch
2020 Chevrolet Silverado GMT T1XX TCU OBD Unlock Patch
3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T) / GMT T1XX · AutoTuner Bench Patch
2019 Chevrolet Silverado GMT T1XX TCU OBD Unlock Patch
3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T) / GMT T1XX · AutoTuner Bench Patch