GM Duramax LM2 3.0L - OBD2 Power Tuning Package (2020-2022)
Type: Tuners
One bundle. All the power. No guesswork.
This all-in-one LM2 delete tuning solution includes the OBD2 flash tuning hardware, the custom delete tune file, and all required tuning credits. It’s the fastest and cleanest way to unlock the performance potential of your 2020–2022 GMC Sierra or Chevrolet Silverado 3.0L Duramax.
Stop piecing together separate hardware and tune components. This package delivers everything in one proven solution: the interface, the tune, and the credits you need to activate it. No compatibility questions. No hidden costs. Just plug in, flash your file, and drive.
Click here for OBD2 Flash Tuning Interface Instructions
Vehicle Fitment
Compatible Vehicles
- 2020–2022 GMC Sierra 1500 3.0L LM2 Duramax
- 2020–2022 Chevrolet Silverado 1500 3.0L LM2 Duramax
All tuning credits are included for these model years. No additional purchases required.
Specifications
| Component | Description |
|---|---|
| Hardware | OBD2 Flash Tuning Interface with USB and OBD2 cables |
| Tune File | LM2 Delete Tune (custom-generated from stock read) |
| Tuning Credits | 6 credits included in bundle |
| Software | Download links and instructions included |
| Flashing Method | Laptop with Windows OS required |
| Estimated Install Time | 1–2 hours depending on experience level |
Tune Levels Included
| Tune Type | HP Gain |
|---|---|
| Stock Optimized | +0 HP |
| Heavy Tow | +12 HP |
| Light Tow | +24 HP |
| Sport | +36 HP |
| Performance | +40 HP |
Each file is pre-configured and tailored to your vehicle based on your original ECM read. No fan speed bugs, glitchy torque management, or error codes.
What’s Included
- OBD2 Flash Tuning Interface (hardware device + cables)
- Custom-built LM2 Delete Tune ECM file (with 5 power levels)
- 6 tuning credits (enough for 2020–2022 applications)
- Software download link and installation instructions
Benefits
- Eliminates confusion: everything you need in one box
- Write the tune immediately—no waiting on parts or credits
- Performance gains customized to your driving style
- Diagnostic scanning, live logging, and flash control in one device
- Firmware safeguards built in: overheat protection, limp-mode backup
- Pre-tested files reduce the risk of post-flash issues
Important Notes:
Hurry Up! Only 36 items left in stock!
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TARIFF NOTICE:
While we ship with all required USMCA/CUSMA paperwork, U.S. Customs or carriers may still apply duties or fees at delivery. For details, see U.S. Customs & Border Protection
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Return Policies
Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
