Aug 25, 2025 · While the Range Technology AFM Disabler promises improved performance and reduced engine wear, many owners discover unexpected complications after installation.

Jul 31, 2025 · For owners of AFM-equipped GM vehicles who just want all eight cylinders all of the time, the Range Technology AFM/DFM Disabler and DiabloSport Sprint AFM Module are …

We’ve explained the seven most common Range Technology AFM disabler problems you might encounter. To fix most of these issues, unplug the disabler when your engine doesn’t require a …

Sep 16, 2022 · A GM tech I know had told me at one point that it's common that when that system is disabled for a long time, and then subsequently re-enabled by removing range or turning …

Ranger AFM disabler problems include reduced mileage, excessive pressure on exhaust, additional emissions, and engine failure due to heat. In addition, the disabler trigger check light …

Nov 12, 2022 · One of the common range AFM disabler problems is that it could stop your car from starting up or contribute to erratic ECM/ECU functionality. There are still other problems a …

Mar 21, 2025 · Are you facing range AFM disabler problems and looking for solutions? Well, an AFM disabler can cause multiple issues in your vehicle. Read this to learn more.

Sep 18, 2023 · " As of right now, the AFM disablers are not emissions approved and can cause the vehicle to fail." " Disabling and then re-enabling the AFM system does reset the vehicle's …

Apr 19, 2024 · While most people have a good experience with these disablers, problems can crop up: Installation Issues: Double-check you’ve plugged it in right and it’s seated properly. …

Nov 3, 2024 · When I first started having issues with my truck’s AFM system, I didn’t immediately realize what the root cause was. The shifting felt rough, and at times, it seemed like the power …