DFM Module for Refresh V8 models - 2021-2026 GM SUV and 2022.5-2026 GM 1500 Truck
*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.
- Disables Dynamic Fuel Management (DFM)
- 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 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.
- 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
- Disables Engine Auto Start/Stop
- Smart inline technology integrates seamlessly with the ECM
Application Summary:
| Year |
Make/Model |
| 2021-2026 |
Cadillac Escalade |
| 2021-2026 |
Cadillac Escalade ESV |
| 2022-2026 |
Chevrolet Silverado 1500 |
| 2021-2026 |
Chevrolet Suburban |
| 2021-2026 |
Chevrolet Tahoe |
| 2022-2026 |
GMC Sierra 1500 |
| 2021-2026 |
GMC Yukon |
| 2021-2026 |
GMC Yukon XL |
| Attributes |
| Brand |
Range Technology |
| CARB EO |
D-115-32 |
| Category |
Tuners and Programmers, Tuners and Programmers |
| Color |
Black, Black |
| Connector Gender |
Male, Male |
| Connector Quantity |
1, 1 |
| Connector Type |
OBDII, OBDII |
| Country of Origin (Primary) |
US |
| Emission Code |
7, 7, Legal US |
| Finish |
Black, Black |
| Fuel Type |
Gas, Gas |
| Grade Type |
Performance, Performance |
| Harmonized Tariff Code (Schedule B) |
8512204040 |
| Hazardous Material Code |
N |
| Life Cycle Status Code |
Available to Order |
| Product Type |
Device, Device |
| SDR Required Flag |
N |
| Terminal Gender |
Male, Male |
| Warning |
California Proposition 65, California Proposition 65 |
| Warranty Time |
1 |
| GTIN |
00810065218636 |
