

⚡ Unlock your GM’s hidden power—no compromises, just pure drive.
The OBDCAR AFM/DFM Disabler is a compact, plug-and-play device designed for V6 and V8 GM vehicles to disable Active Fuel Management systems without reprogramming the factory ECU. It enhances driving smoothness and performance by preventing cylinder deactivation, installs easily via the OBD port, and is fully reversible by unplugging. Compatible with most 5.3L and 6.2L GM engines except certain 2022 refresh models, it offers a cost-effective upgrade trusted by thousands of drivers.
| ASIN | B0BB7YZL93 |
| Best Sellers Rank | #3,013 in Automotive ( See Top 100 in Automotive ) #730 in Automotive Tools & Equipment |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,185) |
| Date First Available | August 19, 2022 |
| Exterior | Polished |
| Item Weight | 1.76 ounces |
| Item model number | OBDCAR-AFM-DFM-V6-V8 |
| Manufacturer | OBDCAR |
| Manufacturer Part Number | OBDCAR-V6-V8 |
| Model | OBDCAR-V6-V8 |
| Product Dimensions | 3.35 x 3.15 x 1.73 inches |
T**P
This is the one you're looking for
Installed in my 2013 Chevy Avalanche. Works great. Noticeable improvement in performance. Vehicle often sits for 3 days without use and has no effect on battery. Fantastic product for half the price of the big name module.
K**S
The best upgrade I’ve done
I was skeptical at first but this works well and makes a difference in performance. You still have to turn off that pesky AUTO Off but no more reduced cylinders. I’ve not had to unplug mine, so I assume the power draw is minimal.
T**E
AFM/DFM disabler works just as advertised! Works on GM 2020 and earlier 10 speed transmissions!
This AFM disabler works great! I have a 2019 Cadillac Escalade ESV with the 6.2L engine and 10 - speed transmission. This particular brand of AFM disabler does in fact keep my engine running on all 8 cylinders all of the time now. I hope it helps to prevents premature lifter failure. Cheap insurance regardless and it has stopped that very slight hesitation when my engine AFM management would switch from V8 mode to V4 mode then back again. It simply plugs into the factory ODB port under the drivers side dash area and works instantly. I bought this on one of the Prime Days sale events so it cost me about 1/3 of what the big name brand one costs and it performs just as good as that one does for far less money. :-)
D**E
It's worked great for me !
After ordering and purchasing my new 2016 5.3 Silverado it began having issues with the AFM system. The truck became unbearable to drive as it would constantly be bogging itself down while driving and dropping and then adding cylinders. Chevrolet said it was supposed to be "seamless" and you would hardly notice it while switching from 8 to 4 cylinders and back and forth. Nothing further from the truth ! I was so Irritated with this system that I was ready to get rid of the truck. Then a mechanic friend told me about the AFM Disabler. As a last resort I purchased and Installed it. What a difference it's made in the drivability of my truck now ! Just plug it into the computer module under the dash and go. That Simple ! My truck now seems to have better acceleration, NO bogging down, and shifts through the gears much smoother .. and DOES NOT allow the Back and Forth cutting of cylinders like the AFM did. Gas mileage has stayed about the same (It's a truck) which was another plus for this little unit. I had heard though, that if you leave it plugged in for an extended period of time it could run your battery down. I've never done that, so I can't really comment on it. However, this disabler has saved me from getting rid of my truck (because of the AFM) and let's me enjoy the power of a V8 truck (the way it's supposed to be).
B**B
I love it but…
Bought this around a year ago. Worked beautifully until around a few weeks ago. Went to start my truck one morning and every warning light was illuminated on the dash as well as none of the gauges worked. It missed really bad and I turned it off. I unplugged this device wondering if it was making my truck run that way and it was. I cleared all the codes and drove without it for a while. I plugged the same one in a few days later and it did the same thing. I ordered a new one and it works great so far. Not sure why the other one shorted out but it’s a great product overall.
J**R
Junk
Had this product for 2 years and had worked good. I paid $85 for it in 2024. I was skeptical of buying one from a company off here. I should have spent the money and bought the one that is made by range technologies. It’s over $200 for it but it would have lasted much longer. And my obd2 scanner works so I know the port is good and no pins are bent of dirty on the disabler. Just really disappointed! Will not be buying anything from this company again!
E**0
Must buy!! Gets rid of the AFM! Truck drives so much better!
This is a must buy!!! Works like a charm! I own a 2016 Silverado, since I’ve had the vehicle it’s hasn’t really been driving that great there was a massive lull in acceleration due to the AFM System. I was also burning through coil packs and spark plugs because of the AFM as well. I ordered this product and now my truck drives like a truck it stays in V8, it is driving beautifully. It has an increase in power and performance it’s a must buy if you own a vehicle with the AFM system in it. I am very happy with my purchase and my truck is actually getting better gas mileage now as well which I’m kind of surprised. This product seems to be working very well and I’m very happy and I’m sure it’s now going to save me a lot of money due to the less wear on the engine from switching to V4 to V8. It’s a must have for any Chevy vehicle with the AFM system in it. If you want to save money and keep the health of your vehicle buy this product, it works!!
J**L
Less cost, great results.
Awesome 2015 Silverado, made immediate difference in the way it shifts and works. Buy it!
N**E
Fonctionne parfaitement. Le mode V4 totalement désactivé !
A**R
De verdad borra el lag de el modo que se apagan los cilindros
D**S
I bought this dabler for my 2014 gmc sierra with a 5.3l v8. So far it works great! the truck is now shifting smoother because its not having to shift due to afm kivking on or off, and certainly saves wear and dear on the torque converter this way. my gas milage has decreased slightly on the highway as expected, but not ebough to really be an issue(i.e 11.5 liters per 100 kms instead of 10.9 l per 100 km difference), but i've noticed something else. my gas milage in-town has vastly improved. The one thing i will warn you as i found out the hard way a couple nights ago in our -40 cold snap in Alberta, you must unplug this module when it gets down below -30 celcius, or it may wreck the module and kill your battery in the process. luckily after mine warmed up for 24 hours, it is working again.
T**Y
Fonctionne très bien pour l’instant 👍
E**.
Desde que lo instalé la camioneta es más suave y no entra en modo de desconexión de cilindros.
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2 weeks ago
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