Product Description
EDGE PRODUCTS 85400-261 EVOLUTION CTS3 WITH LOCKSMITH EVOLUTION CTS3 FOR 2020-2023 GM DURAMAX ECM/TCM UNLOCK CAPABILITIES
The EDGE PRODUCTS 85400-261 EVOLUTION CTS3 WITH LOCKSMITH is Edge’s flagship tuner and gauge package for 2020–2023 GM 6.6L Duramax L5P trucks. It combines a powerful flash tuner, a 5" full-color CTS3 touchscreen, and the revolutionary Locksmith ECM/TCM unlock system, giving you in-cab control over tuning, monitoring, and key drivability functions on your Silverado or Sierra 2500/3500.
Using the included Locksmith device and unlock cables, the 85400-261 can unlock both the ECM and TCM through the OBD-II port, then load Edge’s pre-calibrated, emissions-conscious tunes designed for towing, daily driving, fuel economy, and performance. Once unlocked and tuned, you can monitor dozens of parameters, log data, read/clear DTCs, and customize gauge layouts all from the CTS3 screen.
KEY FEATURES – EDGE 85400-261 EVOLUTION CTS3 WITH LOCKSMITH
- ECM/TCM unlocking in-cab using the included Locksmith tool and cables
- Flash tuning for 2020–2023 Chevy Silverado/GMC Sierra 2500/3500 6.6L L5P Duramax diesel
- 5" capacitive CTS3 touchscreen with customizable layouts and swipe navigation
- Read and clear DTCs directly from the CTS3 display
- Adjustable features including speed limiter, rev limiter, idle-up, tire size calibration, and more (where supported)
- Manual DPF regeneration command and Allison transmission relearn functions (where applicable)
- Performance meter for 0–60, 1/4-mile and other performance tests
- Advanced data logging with export capability to review logs off the truck
- Wi-Fi updateable for the latest firmware and calibrations from Edge
- Integrates with Edge’s Expandable Accessory System (EAS) for EGT, pressure, temp and 5V sensors
Important: Once this device completes VIN lock and ECM/TCM unlock on a vehicle, the unlock process cannot be reversed. The tune can be returned to stock, but the ECM remains unlocked and the device is then married to that VIN. Units that have performed an unlock are generally non-returnable. Edge strongly recommends using a quality battery charger during the unlock/flash process to prevent voltage drop.
FITMENT – 85400-261 EVOLUTION CTS3 WITH LOCKSMITH
This part number is engineered specifically for:
- 2020–2023 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax L5P
- 2020–2023 GMC Sierra 2500HD/3500HD 6.6L Duramax L5P
For earlier L5P and Duramax applications, CPP Diesel also offers other Evolution CTS3 SKUs, such as:
- EDGE PRODUCTS 85400-262 EVOLUTION CTS3 WITH LOCKSMITH FOR 2020-2023 GM 6.6L DURAMAX
- EDGE PRODUCTS 85400-200 EVOLUTION CTS3 FOR 01–16 GM DURAMAX 6.6L
Always confirm your exact year, engine (L5P), and any existing modifications with the application guide before flashing.
HOW THE 85400-261 BENEFITS YOUR 2020–2023 L5P
- Towing: Tow-safe calibrations enhance low-end torque and midrange pull while helping manage EGTs.
- Daily Driving: Sharper throttle response and refined shift behavior improve overall drivability.
- Performance: Aggressive power levels (where supported) deliver strong gains for unloaded driving and fun runs.
- Monitoring: Replace multiple analog gauges with one CTS3 that can display dozens of PIDs on custom layouts.
- Diagnostics: Quickly read and clear trouble codes and log data to help diagnose issues or fine-tune your setup.
RELATED EDGE PRODUCTS (ALL LINKS EDGE-ONLY ON CPP DIESEL)
- EDGE PRODUCTS 84130-3 INSIGHT CTS3 DIGITAL GAUGE MONITOR FOR OBD2 VEHICLES – monitor-only CTS3 for other vehicles in your fleet.
- EDGE PRODUCTS 98620 EAS EGT STARTER KIT DAILY DRIVER/TOW KIT – essential for watching EGT on tuned Duramax trucks.
- EDGE PRODUCTS 98605 EAS UNIVERSAL 5V SENSOR INPUT – add custom 0–5V sensors (fuel pressure, boost, etc.).
- EDGE PRODUCTS 98607 EAS PRESSURE SENSOR 0–100 PSIG
- EDGE PRODUCTS 98608 EAS TEMPERATURE SENSOR -40–300°F (1/8" NPT)
SPECIFICATIONS
| Specifications for EDGE PRODUCTS 85400-261 | |
|---|---|
| Brand | Edge Products |
| Part Number | 85400-261 |
| UPC | 810065212412 |
| GTIN | 00810065212412 |
| Engine | 6.6L Duramax L5P (2020–2023) |
| Vehicle Fitment | 2020–2023 Chevrolet Silverado 2500HD/3500HD & GMC Sierra 2500HD/3500HD 6.6L Duramax L5P |
| Display | 5" color capacitive CTS3 touchscreen |
| Unlock Capability | ECM & TCM unlock via Locksmith device and cables |
| Data Logging | Integrated performance meter and data logger with export |
| Connectivity | OBD-II interface, Wi-Fi updateable |
| Shipping Info | Packaged in Edge retail box; typically ships via CPP Diesel ground service |
| Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
FREQUENTLY ASKED QUESTIONS – EDGE 85400-261
What trucks does the EDGE 85400-261 Evolution CTS3 with Locksmith fit?
This part number is designed specifically for 2020–2023 Chevy Silverado and GMC Sierra 2500/3500 6.6L Duramax L5P trucks. For earlier Duramax applications, CPP Diesel offers other CTS3 SKUs like the 85400-200 and 85400-262. Always verify fitment for your exact year, model, and engine before ordering.
Can this tuner unlock and tune more than one vehicle?
No. The 85400-261 can unlock and tune only one vehicle. Once the ECM/TCM unlock and VIN lock are completed, that process cannot be reversed. You can return the calibration to stock, but the ECM remains unlocked and the device is married to that VIN and is generally non-returnable.
Do I need a battery charger during the unlock and flash process?
Yes, Edge strongly recommends using a stable battery charger during ECM/TCM unlocking and flashing. A voltage drop during the process can cause communication loss and may leave the ECM inoperable. Keeping voltage stable is cheap insurance when tuning a late-model L5P Duramax.
Does the 85400-261 support manual DPF regen and Allison relearn?
Yes, this CTS3 package includes support for manual DPF regeneration command and Allison transmission relearn functions where supported. This can be extremely helpful after service work or when upgrading components on your truck.
What adjustable features are available with this Evolution CTS3?
Depending on the specific calibration and truck configuration, the 85400-261 can offer adjustments for tire size calibration, speed limiter, rev limiter, idle-up RPM, and more. Exact features may vary by model year and strategy, so always refer to the on-device menu and Edge documentation for the most accurate, application-specific list.
Can I use EAS sensors with this CTS3?
Absolutely. The 85400-261 is fully compatible with Edge’s Expandable Accessory System (EAS). You can add EGT, pressure, temperature, and 0–5V universal sensors using accessories like EDGE PRODUCTS 98620 EAS EGT STARTER KIT , EDGE PRODUCTS 98607 PRESSURE SENSOR , and EDGE PRODUCTS 98605 UNIVERSAL 5V SENSOR INPUT .
