GM Duramax LM2 - CAN BUS Plug Kit (2020-2022)
The Duramax LM2 CAN BUS Plug for 2020-2022 Silverado 1500 and Sierra 1500 LM2 diesel trucks is an essential upgrade for anyone performing delete tuning. It ensures proper communication between the ECM and modified components, preventing common issues like error codes or limp mode after removing emissions systems.
Why You Need It
This kit is designed for trucks equipped with aftermarket exhaust systems or delete pipes. When removing the DPF/DEF systems it replace the NOx and DEF modules. It sends a closed signal back to the ECM to ensure proper vehicle operation. Unlike some others that only supply two NOX plugs, we supply 3 NOX plugs and a DEF tank plug. Your specific truck may use a different NOX module in the engine bay and the provided plugs will not fit. In this case you will leave the factory module plugged in and only remove the two NOX modules located underneath the truck, leaving you with an extra NOX plug. If your truck's engine bay NOX module uses the same plugs as the ones underneath, you can use the CAN plug in the engine bay as well.
Key Features:
-
Compatibility: Perfectly engineered for 2020-2022 Silverado 1500 and Sierra 1500 LM2 diesel trucks.
-
Delete Tuning Requirement: Vital for vehicles undergoing delete tuning, ensuring smooth ECM operation after emissions system removal.
-
Aftermarket Ready: Seamlessly integrates with aftermarket exhaust systems or delete pipes.
-
ECM Signal Management: These plugs replace NOx and DEF modules, sending a closed signal back to the ECM for optimal function.
The Duramax LM2 CAN BUS Plug provides a hassle-free solution for maintaining vehicle performance when modifying exhaust systems. It's crucial for ensuring that your truck runs smoothly, even without the factory emissions components.
For the best results, install the kit professionally, especially if you are new to tuning or emissions modifications. This prevents check engine lights and communication errors between the ECM and your truck's modified systems.
Note:
- Off-Road Use Only: Product is intended for off-road use only. They may not be legal for use on public roads where emissions or safety laws apply.
- Check Local Laws: Before buying or installing any parts, check your local laws to ensure the modifications are legal.
- Professional Installation Recommended: We strongly recommend professional installation. These parts are designed for users with advanced mechanical knowledge. Installation instructions are not included unless stated on the product page. Some adjustments or modifications may be required. We do not offer returns or refunds for installations that can’t be completed.
- Warranty Notice: Installing these parts may void your vehicle’s warranty. Please check with your manufacturer.
- No Liability: JS Speedshop is not responsible for any damage or issues caused by the use of these parts.
- Product Images: Images shown are for reference only. Actual products may differ in color, branding, or design.
- No Performance Guarantees: These parts are intended to improve performance, but results may vary and are not guaranteed.
- Please Review: Make sure to read our Terms & Conditions, Shipping Policy, and any known issues before purchase.
Hurry Up! Only 82 items left in stock!
Copy link:
Share:
Ask a question
Shipping
We strive to provide fast and reliable shipping options for all our customers. For detailed information about our shipping rates, delivery times, and policies, please visit our Shipping Page.
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.

