AFM DFM Disabler for GM Silverado & Sierra 5.3L & 6.2L V8 – Made in USA – Fits 2007–2021 AFM/DFM – GM Trucks & SUVs

If you’ve driven an AFM or DFM-equipped vehicle, you already know the feeling — hesitation, vibration, and inconsistent throttle response when the engine drops cylinders. The TruePower AFM/DFM Disabler is engineered to eliminate that behavior entirely, restoring consistent, full-cylinder operation every time you drive. Built in the USA using OEM-grade automotive electronics, TruePower is designed for drivers who want their truck or SUV to respond the way it should. Once installed, your engine remains in V8 or full-cylinder mode, delivering smoother acceleration, predictable power delivery, and a noticeably more connected driving experience. No more shudder. No more lag. Just clean, uninterrupted response from the throttle. For vehicles equipped with aftermarket exhaust systems, the difference is even more apparent. By preventing cylinder deactivation, TruePower allows your exhaust to sound the way it was meant to — consistent tone, deeper rumble, and no abrupt changes in sound under light or moderate throttle. Beyond drivability, disabling AFM/DFM may help reduce unnecessary cycling of internal engine components associated with cylinder deactivation systems. By keeping all cylinders active, TruePower supports long-term engine consistency and helps avoid the conditions that many owners associate with premature wear. Installation is simple and completely reversible. The TruePower module features a true plug-and-play design with no cutting, splicing, tuning, or programming required. It installs discreetly under the dash in minutes and can be removed at any time without leaving behind changes to factory settings. This does not modify ECU calibration. TruePower delivers exactly what drivers want: smoother performance, better throttle feel, improved exhaust sound, and confidence every time you press the pedal.

• Made in the USA with OEM-Grade Components – The TruePower AFM/DFM Disabler is precision-engineered using high-quality OEM automotive electronics for long-term reliability. Compact, discreet, and built for daily driving. Backed by a 1-year warranty.
• Eliminates AFM & DFM Engine Shudder – Disable Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) to stop the jerky transitions caused by cylinder deactivation. Enjoy smoother throttle response and consistent power delivery without tuning or ECU reprogramming.
• Consistent V8 Sound & Throttle Feel – Keeps your engine in full-cylinder mode so your exhaust sounds the way it should. No more tone changes when switching between V4 and V8 operation. Ideal for vehicles with aftermarket or performance exhaust systems.
• Easy Plug-and-Play Installation – Installs in minutes by plugging directly into the OBD-II port under the dash. No tools, wiring, or software required. Fully reversible — simply unplug to return to stock. This is NOT a tuner and does not alter factory ECU settings.
• Improved Driveability & Engine Consistency – By preventing cylinder deactivation, TruePower delivers predictable acceleration and smoother operation while reducing unnecessary AFM/DFM cycling. Designed for drivers who want reliable performance every time they press the pedal.
• Vehicle Compatibility Notice – Compatible with most GM V6 and V8 AFM/DFM vehicles including Chevy Silverado and GMC Sierra applications. Does NOT support GM 10-speed transmission vehicles. Please verify fitment before purchasing.