Range Technology RA003B AFM/DFM Disabler-Blue

We ship these out the same day if you place your order before 2pm EST, with two day delivery.

The patented technology is the only product that will disable Active and Dynamic Fuel Management without reprogramming the factory ECU. Full power delivery all the time without factory warranty concerns.

The Range Technology RA003B is an AFM/DFM Disabler (Blue LED version). It is a plug-and-play OBD-II device for select General Motors (GM) vehicles.

It disables Active Fuel Management (AFM) or Dynamic Fuel Management (DFM) so the engine stays in full-cylinder mode (all V6 or V8 cylinders active) all the time. It also typically disables Auto Start/Stop. It does not reprogram the factory ECU, leaves no trace when removed, and is reversible by simply unplugging it.

Key Compatibility Notes

• Fits V6 and V8 GM vehicles equipped with AFM or DFM systems (cars, trucks, and SUVs).
• Does not support 2022.5+ Refresh model trucks or 2021+ SUVs. Those generally require a different product (such as the RA007 or RA010 DFM Module).
• For 2022 trucks: Check the VIN. The 12th digit must be a “4” or lower for early (compatible) models. A “5” or higher indicates a Refresh model that is not compatible.
• The vehicle must have a functioning AFM/DFM system. If AFM components have been deleted, the device may not work as intended.
• Always verify exact fitment for your specific year/make/model/engine (and VIN for borderline years), as lists can vary slightly by source.

Application Summary (Complete List of Supported Models/Years)

This is compiled from manufacturer descriptions and detailed retailer fitment data (e.g., official Range site summaries and retailer application lists). Engines are typically the AFM/DFM-equipped V6 (often 3.6L) or V8 (5.3L, 6.0L, 6.2L, etc.) variants.

Buick

• Enclave: 2008–2020
• Envision: 2017–2018
• LaCrosse: 2005–2009 and 2016–2019
• Rainier: 2005–2007
• Rendezvous: 2006–2007
• Terraza: 2006–2007

Cadillac

• ATS: 2013–2019
• CT6: 2016–2018
• CTS: 2004–2019
• Escalade: 2010–2020
• Escalade ESV: 2010–2020
• Escalade EXT: 2010–2013
• SRX: 2004–2009
• STS: 2005–2007
• XT5: 2017–2019
• XTS: 2013–2019

Chevrolet

• Avalanche: 2007–2013
• Blazer: 2020–2022
• Camaro: 2010–2024
• Caprice: 2011–2017
• Colorado: 2015–2020
• Corvette: 2012–2019
• Equinox: 2008–2009
• Express 1500: 2014
• Impala: 2006–2009
• Malibu: 2006–2012
• Monte Carlo: 2006–2007
• Silverado 1500: 2007–2022 (VIN check required for 2022)
• Silverado 1500 LD: 2019
• Silverado 1500 LTD: 2022
• SS: 2014–2017
• Suburban: 2014–2020
• Suburban 1500: 2007–2014
• Suburban 2500: 2007–2013
• Tahoe: 2007–2020
• Trailblazer: 2006–2008
• Uplander: 2006–2009

GMC

• Acadia: 2007–2008
• Canyon: 2015–2020
• Envoy: 2005–2009
• Sierra: 2010–2018
• Sierra 1500: 2007–2022 (VIN check required for 2022)
• Sierra 1500 Limited: 2019 and 2022
• Yukon: 2007–2020
• Yukon XL: 2015–2020
• Yukon XL 1500: 2014

Other

• Isuzu Ascender: 2005–2006
• Pontiac G6: 2007–2009
• Pontiac G8: 2008–2009
• Pontiac Grand Prix: 2005–2008
• Pontiac Montana: 2006–2009
• Pontiac Torrent: 2008–2009
• Saab 9-7x: 2005–2009
• Saturn Aura: 2007–2009
• Saturn Outlook: 2007–2008
• Saturn Relay: 2006–2007
• Saturn Vue: 2008–2010

Features:
*Range AFM/DFM Disabler keeps you in full power 100% of the time.
*Simply plug into your onboard OBD-II port and it instantly begins working to eliminate the AFM system.
*Also disables Auto Start/Stop.
*The Range AFM/DFM Disabler does not reprogram your factory ECU.
*Leaves no trace. Unplug it to return to factory settings.
*Fits all V6 and V8 General Motors (GM) active or dynamic fuel management vehicles, includes cars, trucks, and SUVs.

This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.

Actual Range Tech Customer Reviews: