6.6i V8 (L8T)
Chevrolet Express OBD Unlock Patch
ECU access only. Performance tuning is sold separately.
Model years2018-2026
ECU identifiers6.6i V8 (L8T)
PlatformNot listed
ServiceRequest OBD unlock patch
Chevrolet Express OBD unlock patches
2026 Chevrolet Express TCU OBD Unlock Patch
6.6i V8 (L8T) · AutoTuner Bench Patch
2025 Chevrolet Express TCU OBD Unlock Patch
6.6i V8 (L8T) · AutoTuner Bench Patch
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2022 Chevrolet Express TCU OBD Unlock Patch
6.6i V8 (L8T) · AutoTuner Bench Patch
2021 Chevrolet Express TCU OBD Unlock Patch
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2020 Chevrolet Express TCU OBD Unlock Patch
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2019 Chevrolet Express TCU OBD Unlock Patch
6.6i V8 (L8T) · AutoTuner Bench Patch
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6.6i V8 (L8T) · AutoTuner Bench Patch