Cedar PerformanceECU / DME tuning
Photographed Cedar Performance workstation with the bench-patch tool used for OBD unlock service

Dallas ECU access service

GMC OBD Unlock Patches

ECU access via AutoTuner Bench Patch. Performance tuning is sold separately.

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2018-2026GMC Savana6.6i V8 (L8T)2019-2026GMC Sierra3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T)2021-2026GMC Yukon3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87)
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GMC Savana2018-2026 / 6.6i V8 (L8T)GMC Sierra2019-2026 / 3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87) / 6.6 Duramax (L5P) / 6.6i V8 (L8T)GMC Yukon2021-2026 / 3.0 Duramax (LM2) / 5.3i V8 (L84) / 6.2i V8 (L87)