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- USA
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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
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For Your Every Summer RSVP, with Code: SUMMER15
Description
LLY Duramax Stock File 2004–2005 | Unlocked EFI Live OEM Tune100% Stock OEM calibration file unlocked and fully compatible with EFI Live hardware & software. Ideal for restoring your LLY Duramax back to OEM factory calibration. Works with all EFI Live FlashScan & AutoCal devices. Unlocked for full editing, logging, and custom tuning flexibility. Direct fit for 2004. 52005 GMC Sierra & Chevy Silverado 2500HD 3500HD equipped with the 6. 6L LLY Duramax. Digital Delivery Your unlocked stock file will be sent
💻 100% Stock OEM calibration file — unlocked and fully compatible with EFI Live hardware & software.
✅ Ideal for restoring your LLY Duramax back to OEM factory calibration.
✅ Works with all EFI Live FlashScan & AutoCal devices.
✅ Unlocked for full editing, logging, and custom tuning flexibility.
✅ Direct fit for 2004.5–2005 GMC Sierra & Chevy Silverado 2500HD / 3500HD equipped with the 6.6L LLY Duramax.
⚡ Digital Delivery – Your unlocked stock file will be sent directly to your email after purchase within 1 business day
🛡️ 100% Authentic | Backed by Piston Twistin | Unlimited Support
Tags / Meta
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LLY Duramax stock file EFI Live
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2004.5–2005 LLY stock tune
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Chevy Silverado LLY stock tune unlocked
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GMC Sierra LLY stock file EFI Live
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Unlocked OEM LLY EFI Live file
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy