RA003B AFM/DFM Disabler-Blue

Features:

• Disables AFM and DFM operation
• Keeps engine in full-cylinder mode
• Improves throttle response and drivability
• Reduces V4 to V8 switching
• Plug-and-play OBD-II installation
• No tools or tuning required
• Does not reprogram factory ECU
• Unplugs to restore stock settings
• Compatible with gas V6 and V8 engines
• Works with many 10-speed models
• Disables factory Auto Start/Stop
• Made in the USA
• If you have a 2022.5+ refresh model see link below.

Purchase Link: RA007 DFM Module GM Refresh

Keep Your GM Running The Way It Was Meant To

Nothing takes away from the driving experience quite like feeling your engine constantly switch between cylinder modes when you are trying to enjoy the power of your truck. The Range Technology RA003B AFM/DFM Disabler puts you back in control by keeping your GM engine operating in full-cylinder mode at all times. From pulling a trailer on the highway to navigating stop and go traffic around town, this simple device delivers smoother performance and more predictable throttle response every time you press the accelerator. Additionally, it helps eliminate the annoying transitions associated with Active Fuel Management and Dynamic Fuel Management systems, creating a more consistent driving experience behind the wheel. Many GM owners also choose this upgrade to help avoid common concerns linked to AFM and DFM operation, including rough idle characteristics and lifter related issues. Installation takes only seconds with no tools required, making it one of the easiest upgrades you can add to your truck. Simply plug it into the OBD-II port and enjoy the confidence of knowing your Silverado or Sierra is always ready to deliver the performance you expect.

Advanced Plug And Play Control Without ECU Changes

Engineered specifically for AFM and DFM equipped GM vehicles, the Range Technology RA003B offers a sophisticated solution without permanently altering factory programming. This compact module connects directly through the vehicle's OBD-II port and immediately disables cylinder deactivation while maintaining normal vehicle operation. Unlike traditional tuning devices, it does not reflash or modify the factory ECU, allowing you to remove the unit at any time and return the vehicle to its original settings without leaving a trace. Furthermore, the integrated power management system is designed to prevent battery drain when the vehicle is shut off, providing dependable long term operation. The RA003B also disables the factory Auto Start/Stop system, helping create a more seamless and uninterrupted driving experience. Designed for compatible 2007-2022 GM applications, including many 10-speed equipped models, it delivers broad compatibility for Silverado and Sierra owners seeking improved drivability. Proudly made in the USA, this device combines proven functionality with simple installation for a reliable upgrade that works from the moment it is plugged in.

Fitment: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 GM Silverado/Sierra 1500

Notes:

• Not compatible with 2022.5+ Refresh trucks
• Not compatible with 2021+ GM SUVs
• 2022 trucks require VIN verification
• 12th VIN digit must be 4 or lower
• Designed for gas AFM/DFM vehicles only
• Fits compatible V6 and V8 GM models
• Returns to stock when unplugged
• Does not reprogram the factory ECU
• Not legal for sale or use in California
• CARB 50-state approval is still pending