Description
Check the specifications, dimensions, variation details, referenced part numbers, and available fitment evidence before matching this item to an application.
GMAFM AFM/DFM Disable Device (Active Fuel Management AFM Disabler)
👍 PLUG AND PLAY
👍 KEEP IN V6/V8 MODE
👍 100% POWER OF THE TIME
👍 KEEP THE FACTORY ECU
👍 COMPATIBLE WITH V6/V8 GM MOTORS
【Currently NOT compatible】
– NOT compatible with 2019+ Silverado and Sierra with 5.3/6.2L motors and 10-speed transmissions.
– NOT compatible with C8 Corvettes. NOT compatible with 2022 Refresh model trucks or SUV’s.
– NOT compatible with 2023 OR 2024 MODELS.
【Lights tips】
★ One light on : Power is ON and unit is AWAKE and vehicle is ready for commands.
★ Three of four lights on : Vehicle V8 mode is legal ( no engine damaging DTCs present or other parameters out of spec).
【Battery Care】
If the GMAFM Disabler is not used for an extended period, please remove the device to prevent battery drain.
Vehicle information
Available fitment details
Listing compatibility notes
- 【Broad Compatibility】 Compatible with most V6 and V8 GM vehicles with active or dynamic fuel management, including cars, trucks, and SUVs.
- 【Compatibility Note】 The GMAFM AFM/DFM Disabler is not compatible with 2019+ Silverado and Sierra models equipped with 5.
- GMAFM AFM/DFM Disable Device (Active Fuel Management AFM Disabler) 👍 PLUG AND PLAY 👍 KEEP IN V6/V8 MODE 👍 100% POWER OF THE TIME 👍 KEEP THE FACTORY ECU 👍 COMPATIBLE WITH V6/V8 GM MOTORS 【Currently NOT compatible】 - NOT compatible with 2019+ Silverado and Sierra with 5.
- - NOT compatible with C8 Corvettes.
- NOT compatible with 2022 Refresh model trucks or SUV's.
- - NOT compatible with 2023 OR 2024 MODELS.
Fitment data is provided as a buying aid. Verify the listing against your vehicle and existing part before ordering.
Parameters, dimensions, material, fitment, and part numbers
Buying guidance
Quick decision
A engine management systems listing with source specifications kept visible for comparison.
Fit and size notes
- 【Broad Compatibility】 Compatible with most V6 and V8 GM vehicles with active or dynamic fuel management, including cars, trucks, and SUVs.
- 【Compatibility Note】 The GMAFM AFM/DFM Disabler is not compatible with 2019+ Silverado and Sierra models equipped with 5.
- GMAFM AFM/DFM Disable Device (Active Fuel Management AFM Disabler) 👍 PLUG AND PLAY 👍 KEEP IN V6/V8 MODE 👍 100% POWER OF THE TIME 👍 KEEP THE FACTORY ECU 👍 COMPATIBLE WITH V6/V8 GM MOTORS 【Currently NOT compatible】 - NOT compatible with 2019+ Silverado and Sierra with 5.
- - NOT compatible with C8 Corvettes.
- NOT compatible with 2022 Refresh model trucks or SUV's.
- - NOT compatible with 2023 OR 2024 MODELS.
Before you buy
- Compare the listing title, photos, package contents, and specifications with the part being replaced.
- Confirm vehicle compatibility and installation requirements before ordering.
Customer feedback
Ratings and written reviews
3.2 / 5
4 source ratings
Source: Amazon. Imported marketplace feedback is shown for product research and is not a review of a purchase made on this website.
E. Poe –
I have a manual transmission, and when I’m in traffic or sit through a light, it will do a “gears skipped for fuel economy” thing and lock out the transmission forcing you to shift from 1 to 4. There is a couple things that will get around it – either run first gear out to a higher RPM, or shift to neutral and wait .5-1 second for the message to clear, both of which are mildly annoying. I got this hoping it would override that one line of code, and unfortunately, it doesn’t. I drive my car in performance mode, which changes several driving characteristics, so this device didn’t change my car at all. For reference, 2017 Chevy SS.
Keeffer –
I used this on a 2007 Suburban with a V8 automatic trans. I just plugged it in, and it worked—no muss, no fuss. Otherwise, the seller advises unplugging the device when it is not in use to avoid battery drain.
TaroReadr –
Husband hated it. Said his truck ran better without it.
Rudy –
I used to feel like my engine was “slacking off” at times, especially during low-speed driving when the cylinder deactivation would kick in. With the AFM Disabler, the engine now works seamlessly in full-cylinder mode. The power delivery is smooth and linear, making driving far more enjoyable. Every acceleration and deceleration feels natural—what a difference!