AFM & DFM guides
The questions owners ask before buying a disabler, answered with sources.
Does my truck have AFM or DFM?Engine code, VIN and the YK9 sticker: check in two minutes.AFM vs DFMV8-to-V4 versus 17 firing patterns: what changed in 2019 and why it matters for a disabler.How AFM disablers workWhat the plug-in module does, what it doesn't touch, and its side effects.AFM lifter failureSymptoms, $1,800–$6,500 repairs, and what a disabler can and can't promise.AFM disabler battery drainStated draw by model and when to unplug.2022.5 refresh & 10-speed compatibilityWhy most disablers don't fit newer trucks, and how to tell yours.