AFM Disabler Active Fuel Management Delete Disabler AFM/DFM Disabler Compatible with V6 & V8 GM Motors AFM Disabler 5.3 Silverado (Chevy GMC Sierra GMC Yukon Cadillac Escalade etc)4.3L 5.3L 6.0L 6.2L

After using for a week, I noticed (overtime and from day 1) it's easier to speed up from zero. Can see improvement in the mpg and can tell that your truck is always using the full engine. My engine usually studders when I'm either speeding up or constantly going 80 mph, but since I plugged this in, it's gone down a lot and would consider this a good investment. It was also easy to install, just plug it in the obd port and it doesn't stick out. Just unplug if you're not going to drive for a few days so it doesn't drain the battery.

I previously used a Pulsar LT to deactivate the DOD in my 2022 Silverado 6.2. After having a few weird episodes, I decided to remove it and try this device, which is MUCH cheaper. I have ran it on my truck for several days now with no issues. With I would have just bought this first!

Just what was needed to disable the afm in my 2013 Yukon. Now it's stays in its intended V8 mode at all times. I drive 100 miles a day on the highway doing 70mph. to get to and from work. There was practically no difference in gas mileage change after using this and now I have way more pickup and the transmission is no longer hunting around for gears and feeling lazy.

The media could not be loaded. Before this little plug-in, my ’15 Silverado felt like it had a split personality. One minute it’s a V8, next minute it’s sipping fuel like a Prius, and all the while the transitions were jerky enough to make you notice. I didn’t even realize how much that AFM/DFM system was affecting the ride until I disabled it.This AFM disabler took all of 30 seconds to install—literally just plug it into the OBD-II port. No tools, no tech skills, no hunting through menus or risking a voided warranty. The best part? My truck stays in V8 mode now. It actually drives like a truck again—no weird lag, no hesitation when accelerating, no more feeling like it’s “thinking” too hard before giving me power.It’s been weeks and the difference in performance is still night and day. I haven’t noticed any negative impact on fuel economy either, which was my only real hesitation. Plus, if I ever need to go back to stock, I just unplug it. That’s it.It’s rare when a product is this simple, this affordable, and actually works exactly as promised. If you drive a GM with AFM or DFM and you’re tired of your engine playing Jekyll and Hyde, this thing is worth every penny.

Seems to do the job sometimes it is delayed for couple minutes then it kicks in but otherwise good buy

I have a 2021 GMC Sierra X31 6.2L 4x4 and it Really woke my truck up! Instantly after connecting it and after a drive I felt the V8 Power. Only had it on 2 days so haven’t had the chance to see and mpg difference. If you have a V8 and want to feel V8 power purchase this item well worth the money.

So far it’s doing what it says it’ll do no issues. If you have AFM on your 5.3 get this asap it’ll save you time, gas and money. Maybe not in that order but I’ve known 5 people with the same engine all have the same issues at various mileage.

It does the job that is reasonable priced V8 all the way