Range Technology DFM Module GM Refresh: GM V8 2021 – 2025 (Dynamic Fuel Management)
DFM Module for Refresh V8 models – 2021-2024 GM SUV and 2022.5-2025 GM 1500 Truck
Disables Dynamic Fuel Management (DFM) and Engine Auto Start/Stop systems
Smart inline technology integrates seamlessly with the ECM
Allows a true ‘Return to Stock’ status when removed with no trace for worry free dealer services
All-time V8 mode means better power on demand, a more consistent driving experience, reduced engine and valvetrain wear, and improved long term engine reliability
Enjoy that V8 rumble and avoid unpleasant exhaust notes and drone from running in cylinder deactivation mode
Plug-and-play installation can be completed in minutes
49-State Emissions Compliant, 50-State CARB EO Pending
First to market product for Global B and Refresh model support
To confirm your 2022 model truck is compatible with this unit, check your VIN. The 12th digit in a Refresh model must be a ‘5’ or higher
This device is compatible with ALL 2023-2025 truck and 2021-2024 SUV models with the 5.3L and 6.2L engine
Some applications may still encounter 0-Cylinder Mode while coasting when 0% throttle input is detected at the ECM
We do not control the in-cab Auto Start/Stop switch on the dash, so it will still illuminate on/off with the button being pressed as it factory, even though the system is always disabled with our module installed at the ECM.
Made in USA
This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.