Range Technology RA003B AFM/DFM Disabler-Blue | 2020-2024 GM Silverado/Sierra 1500

Features:

• Maintains full V6 or V8 power
• Disables AFM and DFM instantly
• No ECU reprogramming required
• Preserves factory warranty intact
• Plug-and-play through OBD-II port
• Eliminates Auto Start/Stop function
• Leaves no trace when removed
• Compatible with most 2020–2024 GM trucks
• Works with 5.3L and 6.2L engines
• LED color is cosmetic only
• Made in the USA
• EPA Tampering Policy compliant

Keep Your Truck Running At Full Strength

If your GM truck doesn’t feel like it’s giving you everything it’s got, the Range Technology RA003B AFM/DFM Disabler might be exactly what you need. This simple plug-and-play device locks your engine in full-cylinder mode, so your V6 or V8 delivers maximum performance every time you step on the gas. No more laggy throttle or awkward transitions from four to eight cylinders, just consistent, full-power response whether you're towing a trailer or cruising through town. Unlike tuners or reflash tools, this disabler doesn’t reprogram your ECU, which means your factory warranty stays untouched. It works through your OBD-II port and begins operating the moment it’s plugged in, making installation a true no-brainer. You'll also enjoy the added bonus of eliminating the Auto Start/Stop system, so your engine stays on when you want it to. For daily drivers, weekend warriors, and anyone who just wants their truck to feel more alive, this is one of the easiest upgrades you can make. And with no permanent changes to your vehicle, you can unplug it at any time to go right back to stock settings.

Full Cylinder Control Without Touching Your ECU

The RA003B from Range Technology uses patented onboard technology to disable both Active and Dynamic Fuel Management systems without rewriting your truck’s factory programming. It’s fully compatible with most 2020–2024 GM Silverado and Sierra 1500 models running V6 or V8 engines, including popular 5.3L and 6.2L applications with 10-speed transmissions. Once connected to the vehicle’s OBD-II port, the unit actively keeps the engine in full power mode by blocking cylinder deactivation signals from reaching the ECU. Because it doesn’t modify factory software, there’s no need to worry about triggering warranty issues or causing conflicts with other modules. The device also disables the Auto Start/Stop system, which many drivers find inconvenient during everyday use. Its compact design leaves no trace when removed, allowing full return to factory operation with a simple unplug. Each unit is proudly made in the USA and complies with the EPA Tampering Policy, making it legal for street use in most states outside of California.

Fits: 2020, 2021, 2022, 2023, 2024 GM Silverado/Sierra 1500

Notes:

• Compatible with most 2020–2024 GM V6 and V8 vehicles
• Does not support 2022.5+ GM refresh trucks
• Not compatible with 2021 and newer GM SUVs
• Check VIN to confirm 2022 compatibility (12th digit ≤ 4)
• Should be unplugged if vehicle sits for extended periods
• Does not alter or reprogram factory ECU settings
• Leaves no trace when removed from OBD-II port
• Available with Blue, Red, or Green LED lights (cosmetic only)
• Product is not currently legal for sale in California
• Made in the USA and EPA Tampering Policy compliant
• Safe for use with factory warranty intact