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The Best AFM/DFM Disablers for GM Vehicles

We compared eight AFM/DFM disablers for GM vehicles, based on owner ratings, expert reviews, and video reviews, to find the best options for improving performance and reliability.

Updated

The bottom line

The BOOST AFM & DFM Disabler (asin B0D1T1FMJK) is our top pick for its reliability, performance improvements, and low battery drain, priced at $149. The Range Technology RA007 DFM Module (asin B0DHVYW863) is a close runner-up at $234.5, with smart inline technology and improved power. For budget-conscious buyers, the AFM Disabler for V6 & V8 GM Motors (asin B0CTJNM7XQ) at $72.99 offers a performance boost without breaking the bank.

Top pick
BOOST AFM & DFM Disabler - V8/V6 Mode 100% of the TimeBOOST AFM & DFM Disabler - V8/V6 Mode 100% of the Time $149.00

Best overall AFM/DFM disabler for GM vehicles

The BOOST AFM & DFM Disabler ensures V8/V6 mode 100% of the time, increasing performance and improving driving experience. Priced at $149, it has the lowest battery drain on the market. However, it does not fit 2023 or 2024 models or vehicles with 10-speed automatic transmissions.

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Runner-up
Range Technology RA007 DFM Module Compatible with GM Refresh V8 Trucks and SUVRange Technology RA007 DFM Module Compatible with GM Refresh V8 Trucks and SUV $234.50

Advanced DFM disabler with smart inline technology

The Range Technology RA007 DFM Module disables DFM and Engine Auto Start/Stop systems, offering improved power and reduced engine wear. Priced at $234.5, it integrates with the ECM. However, it is more expensive and has fewer owner ratings.

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Budget pick
AFM Disabler for V6 & V8 GM MotorsAFM Disabler for V6 & V8 GM Motors $72.99

Affordable AFM disabler with high owner satisfaction

The AFM Disabler for V6 & V8 GM Motors is easy to install and enhances driving experience. Priced at $72.99, it has a high owner satisfaction rate. However, some users report no change in fuel efficiency.

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The field, ranked

  1. BOOST AFM & DFM Disabler - V8/V6 Mode 100% of the Time Best for reliability and performance improvements. 9.0/10 $149.00 Amazon
  2. Range Technology RA007 DFM Module Compatible with GM Refresh V8 Trucks and SUV Best for advanced features and ECM integration. 8.5/10 $234.50 Amazon
  3. AFM Disabler for V6 & V8 GM Motors Best for budget-conscious buyers with high satisfaction. 8.0/10 $72.99 Amazon
  4. AFM-DFM Disabler Active Fuel Management Disabler Compatible with V6 & V8 GM Motors Good for ease of installation and compatibility. 7.5/10 $52.99 Amazon
  5. ROPODE AFM Disabler Compatible with V6 & V8 GM Motors Good for engine protection and simple installation. 7.0/10 $69.99 Amazon
  6. Range Technology RA003B AFM/DFM Disabler Good for leaving no trace and instant operation. 6.5/10 $220.87 Amazon
  7. Boost DFM Disabler - Fits 2022.5-2026 Silverado/Sierra & 2021-2024 GM SUV Good for reducing DFM activations and improving throttle response. 6.0/10 $149.00 Amazon
  8. TOPDON AFM/DFM Disabler for V6 V8 GM, OBD2 AFM Disabler Device Good for reducing common AFM/DFM concerns. 5.5/10 $69.99 Amazon

Where the differences show up in daily use

Owners of the BOOST AFM & DFM Disabler (asin B0D1T1FMJK) report noticeable improvements in power and smoothness, with minimal battery drain. The Range Technology RA007 DFM Module (asin B0DHVYW863) has smart inline technology, but at a higher price. The AFM Disabler for V6 & V8 GM Motors (asin B0CTJNM7XQ) offers a good balance of performance and affordability, though some users report no change in fuel efficiency.

What owners complain about after buying

The most common complaint across all products is compatibility issues, particularly with newer models and 10-speed transmissions. Some users also report no change in fuel efficiency, despite the devices' claims. Battery drain is another concern, especially for the Boost DFM Disabler (asin B0FJH1T9X5), which can drain the battery if not driven regularly.

The also-rans

The TOPDON AFM/DFM Disabler (asin B0GXZDVKRD) and the ROPODE AFM Disabler (asin B0FRS7RR77) did not make our top picks due to lower owner satisfaction and fewer positive reviews. The TOPDON device is praised for its smart sleep mode and NFC support, but it has fewer owner ratings and lower overall satisfaction. The ROPODE device is easy to install and enhances engine performance, but it has specific compatibility issues.

How this was put together

This guide is based on owner ratings, expert reviews, and video reviews of eight AFM/DFM disablers for GM vehicles. We considered over 10,000 owner ratings and dozens of video reviews. No products were tested hands-on. The evidence was thinnest for the TOPDON AFM/DFM Disabler (asin B0GXZDVKRD) and the ROPODE AFM Disabler (asin B0FRS7RR77), which had fewer owner ratings and lower overall satisfaction.