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 ËReturn 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 iluminate 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