Emission Deletes & ECU Tuning for GM Duramax Trucks (USA Market)

Supported ECUs: ACDelco E41, E42, E66, E46

If you're running a Duramax-powered GM truck, and looking for emissions delete and performance tuning solutions, AUTO-REMAP offers a proven service designed for diesel enthusiasts, fleet operators, and tuning shops across North America. We support all major GM diesel ECUs, including:

✅ ACDelco E41 & E42 – 6.6L Duramax L5P / L5D

✅ ACDelco E66 – 3.0L Duramax LM2 / LZ0

✅ ACDelco E46 – 3.0L Duramax LM2 (2023+)

🛠️ ACDelco E41 & E42 – 6.6L Duramax L5P / L5D

Found in:

• Chevrolet Silverado 2500HD / 3500HD
• GMC Sierra 2500HD / 3500HD
• Chevrolet Express / GMC Savana 4500
• Medium-duty and commercial chassis

Supported OS numbers:

• 12690762, 12690763, 12692043, 12697840, 12697841, 12698093,
• 12698595, 12699524, 12704854, 12708075, 12708517, 12709842,
• 12709843, 12709844, 12710937, 12714514, 12718488, 12720289,
• 12723939, 12725870, 12728644, 12729375, 12730511, 12730512,
• 12731638, and many others.

Services available:

✅ Full DPF, EGR, and SCR/DEF deletes

🚫 Speed limiter removal

🔄 Raised RPM limit (factory 4000 → up to 5500 RPM)

🧰 Stage 1, 2, 3 tuning (hybrid turbo support)

📂 Damos file support for all OS versions (on request)

🛠️ ACDelco E66 – 3.0L Duramax LM2 / LZ0

Found in:

• Chevrolet Silverado 1500 / Tahoe
• GMC Sierra 1500 / Yukon
• Cadillac Escalade (3.0 Diesel)

Supported OS numbers:

12716399, 12728650, 12737066, 12739182, 12742974, 12742975, and more.

Available tuning options:

✅ Emission deletes (DPF, EGR, SCR)

⚙️ Towing optimization / fuel economy tuning

📈 Boost, torque, and injection mapping

🛠️ ACDelco E46 – 3.0L Duramax LM2 (2023+)

The latest ECU platform for the 3.0L diesel generation.

Supported OS numbers:

24001963, 24000425, 24000072, 12725101, 12714133, and others.

Services include:

✅ Full emissions delete package

🔧 Improved drivability and throttle response

📊 Custom torque and turbo mapping

📊 Proven Results, Real Performance

Our calibrations go beyond simple deletes. All tuning files are:

✔️ Dyno-developed and tested

✔️ Safe for transmission and drivetrain

✔️ Designed to increase usable torque and power

✔️ Compatible with aftermarket upgrades (intake, exhaust, turbo)

🧠 Damos Support for Tuners & Developers

For advanced users, we offer Damos packages for:

• E41 / E42 — all L5P / L5D variants
• E66 — 3.0L LM2 / LZ0
• E46 — LM2 2023+

🔍 These include full map definitions (torque, injection, air/fuel, turbo, diagnostics, limiters) and are available on request.

All models you can find in the list when creating a new order. Examples below:

⚡ Fast Delivery: 30 Minutes to 3 Hours

Need fast results? We deliver modified files in as little as 30 minutes, with guaranteed delivery within 3 hours.

🎯 Just upload your stock file via our secure system:

👉 https://fs.auto-remap.com

👨‍🔧 Trusted by Diesel Pros Across North America

AUTO-REMAP partners with:

• Diesel performance shops
• Fleet maintenance centers
• Off-road builders
• ECM/TCM tuning specialists
• Enthusiasts doing their own tuning

We deliver custom-tailored tuning, not generic files. Full support, fast turnaround, proven results.

📞 Contact Us

✅ Ready to unlock the full potential of your GM Duramax truck?

🌐 File service: https://fs.auto-remap.com

📩 Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

⚠️ Disclaimer

All emissions-related modifications are intended for off-road, race, or export use only. These solutions are not street legal in the United States where emissions laws apply. Use responsibly and in accordance with local regulations.