Collection: 2019-2023 Duramax LM2 Cables / Switches

Get Your 2019–2023 Duramax LM2 Tuning Setup Dialed In

When you're upgrading your Duramax LM2, the right accessories make a real difference. DIESELR supplies purpose-built OBDII splitters, SOTF switches, and monitoring cables designed to support clean tuning workflows and consistent data logging. No more unplugging devices or compromising functionality — every piece in this lineup is engineered for seamless integration and long-term durability.

Duramax LM2 Switches and Cables: What’s Available

✅ 5-Position SOTF/DSP Switch (Universal)
A rugged rotary switch built for trucks running shift-on-the-fly calibrations. Clear detents, easy mounting, and reliable operation.

✅ OBD2 Splitter Cable
Allows tuners, monitors, and accessories to run together without disconnecting anything. Plug-and-play fit for all 2019–2023 LM2 trucks.

✅ Edge EAS Replacement EGT Lead – 15 inch
A direct-fit lead for Insight users who need accurate exhaust temperature data for towing and tuning.

NEW: GM E90/T93 Upgrade Kit — Now Available at Dieselr

For LM2 owners preparing for deeper controller access, Dieselr now offers the GM E90/T93 Upgrade Kit — a DIY solution for upgrading E90 ECMs and T93 TCMs without removing any modules from the truck.
This kit is ideal for shops and diesel owners who want a clean, in-bay workflow with no downtime and no send-in service.

Perfect for:

• 2019–2022 GM 1500 trucks running the E90 ECM
• 2019+ Duramax LM2 trucks equipped with T93 TCM
• Users needing full controller access for scanning, logging, and custom tuning
• This kit pairs seamlessly with Dieselr’s LM2 cables and switches, giving you everything you need to build a complete tuning setup.

Why Choose DIESELR for LM2 Accessories?

• Plug-and-Play Fitment: No cutting, splicing, or guesswork.
• Built for Diesel Trucks: Hardware designed for real-world load, heat, and long-term use.
• Durable Components: Proven materials and tight manufacturing tolerances.
• Matches All 2019–2023 3.0L LM2 Platforms: Silverado and Sierra.

Vehicle Fitment

2019–2023 Chevrolet Silverado 1500 3.0L Duramax
2019–2023 GMC Sierra 1500 3.0L Duramax