Range Technology RA003B AFM/DFM Disabler-Blue

2018 gmc Sierra with eassist. If you want something that you plug in and basically forget about, this works like it's supposed to. However it's not perfect. It does turn off the auto stop and the DOD. When slowing down and coming to a stop, the transmission sometimes studders (best word i can describe it). If you don't mind a few extra seconds (without the Range device) put the transmission in L and select the highest gear available. This keeps the auto stop off and it stays in v8 all the time. The truck will drive normally.

I almost never write reviews but this thing legit works. It never goes back into V4 mode. It stays in V8 and my car is a 2SS 1LE. 2022. So it pops even more cause it’s pure V8. Literally goes on for like 6 seconds straight after flooring it. It’s crazy how a simple plug in can change so much. That’s another thing, it was very very easy to install. You just plug it in. That’s it. No setting, no nothing to adjust

So far it seems to be working correctly. Easy to use and easy to connect.

Still use this everyday on my 2017 Yukon. I've had it so long I forgot that they are supposed to cut down to 4 cylinder mode. Zero issues zero hassle. Plug it in. Boom it works as described. Completely disables the 4 cylinder mode without any check engine light etc.

4 stars because nothing’s perfect but these fit nearly perfect on my 21’ Silverado trailboss. Took about a half an hour to install and they feel great seat warmers work also. Great product i hope they hold up well.

Works well transmission took a few days to adjust but no more funky shifting.Very happy.

Truck runs better, the gas mileage went down a little but the performance makes up for the 1 mile per gallon I lost.

Update: Works when it wants to contacted customer service and they say if you remote start it won’t work properly. Would have been nice to know before purchasing. Whe it does work it feels like a whole new truck. I’ve been using the Range Technology RA003B for a while now and it’s honestly one of the best small upgrades I’ve made to my truck. Installation took less than a minute—just plugged it into the OBD port and that was it. Right away I noticed the truck stayed in V8 mode and the annoying V4 switching was gone. The drive feels smoother, throttle response is better, and it just feels like the engine is working the way it should. I also like that it’s completely plug-and-play, so if I ever want to remove it, I can. If you’re tired of the AFM kicking in all the time, this little device is definitely worth it.

Bought this as a gift for my husband for his 2016 GMC Sierra. If you don’t have one, GET ONE! He says the power is instant, no lagging anymore and fuel mileage is better!! He didn’t notice a difference in fuel mileage right away but after using it for a few weeks, he said his fuel mileage has never been better! I read some reviews to unplug it as it drains your battery. So far he has never unplugged it and has never had an issue so let’s hope it stays that way. Buy it, you won’t regret it!

Cumple con lo que promete, mejora el funcionamiento. El paquete llegó abierto sin embargo funciona, solo tengo dudas, no especifican si tiene garantía

Works as intended, using it in a 2018 Camaro SS

I am in Australia. Ordered through Amazon. I read as many reviews I could find. Used in the Chev 1500 Silverado for a week or so and found it to be as advertised. Can't fault it at this time.

Menciona que evitará que el motor del vehículo se pare en los altos, pero continúa apagándose, no sé si la verdad funciona o no, no veo ningún cambio en el ruido del motor, o no sirve, o está defectuoso o no es compatible, lo usaré un tiempo y si no veo ningún beneficio lo regresaré