





DieselTok
2004.5-2005 Chevy GMC Duramax LLY Key Lock SOTF Switch
- High-quality components with crisp detents, built for rugged truck environments.
- Ultimate flexibility to manage everything from max-effort racing to daily fuel economy.
- Change between 5 EFI Live tunes instantly while driving—no need to stop or reflash.
- Lock your tune in place to prevent unauthorized switching by valets, mechanics, or other drivers.
- Protect your build by locking the switch in safe "Tow" or "Valet" modes when others drive.
- Specifically engineered for 2004.5-2005 GM 6.6L LLY for 100% DSP5 compatibility.
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