Unleash the full power of your GM V8 engine with the Range Technology DFM Module, engineered specifically for 2021–2026 GM SUVs and 2022.5–2026 GM 1500 trucks. Designed to disable Dynamic Fuel Management (DFM) and keep your engine running in full-cylinder mode, this plug-and-play module restores the consistent power, performance, and exhaust tone your truck or SUV was built for. By preventing unwanted cylinder deactivation, the Range DFM Module eliminates the lag, vibration, and inconsistent throttle response often caused by GM’s factory fuel management systems. Simply plug the module into your ECM and enjoy instant results, no tuning, tools, or permanent modifications required.

Whether you’re towing, daily driving, or just want your V8 to stay a V8, the Range Technology DFM Disabler ensures your vehicle delivers smooth, responsive power every time you hit the gas. Compatible with late-model Chevrolet Silverado 1500, GMC Sierra 1500, Tahoe, Suburban, Yukon, and other Escalade, this innovative device provides the ultimate solution for drivers who want to take control of their vehicle’s performance. Manufactured and tested in the USA, the Range DFM Module offers safe, reliable performance and can be removed at any time to return to stock operation.

Experience the difference that comes from running all eight cylinders all the time. Stronger acceleration, better towing power, and a more aggressive exhaust note, without voiding your warranty or altering your factory tune. The Range Technology DFM Module is the most effective way to disable GM’s Dynamic Fuel Management and Auto Start/Stop system, improve drivability, and maximize your truck or SUV’s true potential.

Now 50-State Carb Compliant with EO # D-115-32

*Some vehicles may still engage 0-cylinder mode while coasting with this product installed. During extensive testing, it was found that completely disabling this function led to undesirable driving conditions and safety concerns. Disabling 0-cylinder mode while coasting resulted in a notable decrease in fuel efficiency, with a loss of 2-3 MPG, as the engine continues to fuel and fire the injectors even during coasting. This fueling also creates an unsettling sensation during deceleration, as it feels like the vehicle is still accelerating slightly, despite 0% throttle input. This requires harder braking, especially in scenarios like towing or descending a long grade, leading to undesirable driving conditions.

Features:

Disables Dynamic Fuel Management (DFM)
Disables Engine Auto Start/Stop
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
50-State CARB Compliant EO# D-115-32 for 2021-2024 model years. 2025-2026 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 2023-2026 truck and 2021-2026 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.
We do recommend removing the DFM Module before performing any GM Over-the-Air updates or visiting the dealer for vehicle updates via OBD-II port
Made in USA

Range

2 products

Range, GM, AFM Disabler

DFM Module GM Refresh

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