Evolution CTS3 with Locksmith Evolution CTS3 for 2020-2023 GM Duramax - ECM/TCM Unlock Capabilities - Edge Products - 85400-261

GM 2020-2023 L5P Diesel Evolution CTS3 K. It is strongly recommended that a battery charger be used during the ECM/TCM Unlock to ensure no voltage drop interrupts the process leaving an ECM in-operable.

Evolution CTS3 with Locksmith Evolution CTS3 for 2020-2023 GM Duramax - ECM/TCM Unlock Capabilities!

The Edge Evolution CTS3 is the ultimate performance upgrade for 2017-2023 Chevy Silverado and GMC Sierra 6.6L L5P Duramax trucks, combining powerful flash tuning with the industry's best in-cab monitor.

This all-in-one device includes the revolutionary Edge Locksmith tool, which unlocks the ECM and TCM through the OBD-II port, giving you access to preloaded emissions-friendly calibrations designed for daily driving, towing, fuel economy, and performance. Simply flash your truck, unplug the tool, and enjoy safe, reliable power gains you can feel every time you drive.

The CTS3's 5-inch high-resolution touchscreen provides unmatched visibility and control, letting you track critical parameters, log performance data, and customize gauge layouts.

Beyond tuning, the Evolution CTS3 gives you access to an impressive range of adjustable features including tire size recalibration, speed limiter adjustment, remembering tow/haul and exhaust brake settings, and more.

With its intuitive swipe interface, built-in diagnostics, and Wi-Fi update capability, the CTS3 sets the standard for modern diesel tuning and monitoring.

The Evolution CTS3 also made history as the first to market with 10-speed transmission tuning support, unlocking smoother, stronger shifting on 2020+ L5P trucks.

Now, it's once again leading the way as the first to offer direct OBD-II flash tuning for 2017-2019 6-speed transmissions, eliminating the need for bench flashing or third-party hardware.

Backed by Edge's 20+ years of diesel tuning expertise, the Evolution CTS3 for L5P Duramax is the go-to choice for owners who want big power gains, better fuel economy, imrpoved drivability while towing and advanced features, and the most powerful monitor in the industry, all in one sleek package.

A PC and our downloadable Update Agent software will be required in order to complete this tune process


Device can unlock and tune only one vehicle.

Once the ECM is unlocked and flashed, the flash can be returned to factory settings, but the Unlock process can not be reversed. If VIN lock and ECM Unlock has been completed, device is non-returnable


In-vehicle ECM/TCM unlock

Adds up to 125hp/275tq to the tires at Peak RPM's

Monitor displays important data like Soot, Miles Since Last Regen, EGT's, Boost and Fluid Temperatures

10-speed transmission tuning included, with choice of four calibrations to fine tune your experience (Economy, Tow, Performance, Extreme)

Throttle Boost feature allows user adjustable pedal sensitivity

Economy (50hp/100tq), Towing (75hp/160tq), Performance (90hp/180tq), Extreme (125hp/275tq) Peak RPM Gains

1.3 seconds faster in the 1/4-mile, gained 8mph!

Remember last button setting for drive mode, exhaust brake, tow/haul, and grade braking

Calibrate speedometer for tire sizes 26-38 inch

Command manual DPF regeneration cycle

Allison Transmission Relearn

Adjust speed and rev limiters

Read and clear DTC's

Adjust Idle Up feature for 600-1800rpms

Great for daily driving and towing performance

Tuning has passed all in-house emissions testing with CARB EO submissions being processed

Calibrations developed to offer clean, efficient DPF friendly performance

Does NOT support the removal of emissions equipment