GM Duramax LM2 - CAN BUS Plug Kit (2020-2022)
Type: Accessories | Fits: GM Duramax
Essential upgrade for smooth delete tuning.
The Duramax LM2 CAN BUS Plug is specifically engineered for 2020–2022 Chevy Silverado 1500 and GMC Sierra 1500 LM2 diesel trucks. It ensures proper communication between your ECM and modified components when emissions systems are removed. By preventing error codes, limp mode, and signal mismatches, this plug is crucial for reliable performance after tuning modifications.
Vehicle Compatibility
- 2020 Chevy Silverado 1500 LM2 Diesel
- 2021 Chevy Silverado 1500 LM2 Diesel
- 2022 Chevy Silverado 1500 LM2 Diesel
- 2020 GMC Sierra 1500 LM2 Diesel
- 2021 GMC Sierra 1500 LM2 Diesel
- 2022 GMC Sierra 1500 LM2 Diesel
Specifications
| Feature | Details |
|---|---|
| Modules Replaced | NOx modules (x3) + DEF tank plug |
| Integration | Works with aftermarket exhausts and delete pipes |
| ECM Communication | Sends closed signal back to ECM for smooth operation |
| Extra Plug Included | Covers variations in engine bay NOx module compatibility |
Key Features
- Delete-Tuning Ready: Required when removing DPF/DEF systems to maintain ECM stability.
- Aftermarket Integration: Seamlessly pairs with aftermarket exhaust systems or delete pipes.
- Signal Management: Replaces NOx and DEF modules with closed-loop signals for proper function.
- Flexible Fitment: Comes with 3 NOx plugs and a DEF plug, providing options for different module setups.
Benefits
- Prevents limp mode and error codes after emissions removal
- Ensures ECM and engine systems communicate correctly
- Provides plug-and-play convenience with no wiring modifications
- Maintains smooth performance during and after tuning
Installation
Professional installation is recommended for optimal results. If your truck’s engine bay NOx module uses different plugs than those provided, leave the factory one connected and only replace the two modules under the truck. If all modules match, you can replace all three with the provided plugs.
Important Notes:
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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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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.
