Range Technology Corded Electric Active Fuel Management Disable Device (Blue)

This product works Great!!! Keeps your vehicle running on 8 cylinders all the time!!! Better gas mileage, I have no more oil consumption!!! Well worth the money!!! Thank You!!!

This unit really works. My new 2018 Silverado 1500 ("e" model) was running well before I plugged it in the OBDII socket, but I wanted the option of disabling this V8-V4 mode because of what had happened to my friend's 2011 Sierra 1500 (excessive oil consumption between scheduled oil changes due to worn rings on an otherwise meticulously maintained truck. This was traced to a lack of proper lubrication in V4 mode, an issue supposedly fixed since in the newer models). I just couln't afford to take any chances at having to go through an engine disassembly so soon in my truck's life. I mean, how long have they been messing with V8s? They should have left these engines alone instead of messing with cylinders 1, 4, 6, and 7. Since I do mostly highway trips, my mileage has actually improved, not by much, but it shouldn't have if you believe the GM hype. You really have to wonder why all this V8-V4 complexity was added to a perfectly good V8 if as, in my case, my mileage improved!!! The ONLY thing I miss at times (easily fixed by shutting down the truck and just unplugging it from the OBDII socket) is some engine compression braking in hills from the V4 mode. It helped me maintain a set cruise speed going down some hills with a light 2000 pound trailer load, and the fact that the engine no longer shuts off at stops or red lights (the "e" model has the Lithium battery pack and induction motor to spool up the engine under these conditions but it won't do any of that while this particular unit is plugged in). Other than that, I have the V8 I expected now, the mileage is fine and hopefully I won't have issues with failing parts in cylinders 1,4,6 and 7. The added complexities of these otherwise old V8's should be a cause for concern. They use a special camshaft ground differently just for cylinders 1,4,6 and 7, they have a higher-volume oil pump, and a pressure relief valve to handle the incessant oil/computer controlled operations of the intake and exhaust valves in these 4 cylinders and this device just stops all this from happening without reprogramming anything. I could be wrong of course, but I think the pressure relief valve should have no issues handling the changes for the life of the engine. The rest is literally put to sleep while this device is plugged in. If you want to take your truck in for maintenance, say while it is still under warranty, just remove it before going into the stealer. They will never know. Hopefully I'll never have to go in for expensive repairs due to failures with cylinders 1,4,6 and 7. Make sure you get this device with the latest firmware as it is now totally stealthy to Onstar's big brother monthly reporting. Range Technology has done its homework. I don't work for them, I'm just a happy customer and would recommend this to anyone just wanting back the V8 truck they thought they bought.

Researched the oil consumption problem on my 2008 Chevy Silverado 5.3 with Active Fuel Management, and found that when truck goes into 4 cylinder mode it begins to use oil to the tune a quart every 1500 miles. Decided to buy Range AFM disable module and it works great! Oil consumption is virtually non existent with 85K miles on the truck I change oil every 5 K miles and surprise the oil is still there. It runs strong in constant V-8 mode which has not effected overall mileage one bit. One thing I noticed that you have to check on information center once in a while to make sure unit is working because after I let the truck sit for a few days with module plugged in I noticed it was not working. I then unplugged the unit and plugged it back in and it worked, this occurred twice in a 6 month period. If vehicle is not to be driven for more than two days I unplug the module and haven't had the problem since. This unit is well worth the money spent to save my engine from damage from the GM blunder of Active Fuel Management, which in my opinion is inexcusable disaster inflicted on what in my opinion is one of the best trucks ever made."Product Update 11-23-16 my truck has 93k on it and today the truck began shifting very hard... I thought maybe transmission was letting go but remembered someone commenting on how the Range module was causing this with their truck. My solution was to disconnect Range module, then connect code reader to scan the system no trouble codes found. Then I cleared system just to be sure and installed Range module again. Everything is fine shifting perfectly I assume there is a firmware update for this problem.

The Chevrolet Camaro SS automatic (L99 engine) was built with AFM (active Fuel Management) which puts the car into 4 cylinder mode when the car is under light load. While in theory this seems like a good idea and helps GM meet the Federal CAFE standards. In practice, for a high performance car such as this it's horrible! You can hear and feel when the car goes into 4 cylinder mode. There is a slight lag when needing power to pass, or just accelerate a bit to keep up with traffic and a HORRIBLE "Farting" sound as residual fumes are detonated when the car comes out of 4 cylinder mode. Until now, the ONLY way to disable AFM was to have your car tuned that can and will void the 10 year, 100k mile powertrain warranty. I wasn't ready to do that so begrudgingly decided to keep driving a FART car!. Enter the RANGE V8!!! This simple device plugs into your OBD-II port that fools the car into believing current conditions are not right for the car to enter 4 cylinder mode without reprogramming the ECM. At first I was a bit skeptical. But after reading some initial reviews from early adopters I bought one. IT ABSOLUTELY WORKS as advertised! I Plugged it in and took my car for a quick test drive. IMMEDIATELY (before I even got out of my subdivision) recognized that AFM was not engaging. A longer test drive confirmed this. At a later point, I removed the device and AFM began engaging again which proves to me the ECM was not reprogrammed. This is truly the best of both worlds. I can used the RANGE v8 when I want. When I take a long highway trip and am interested in keeping my MPG high, I simply remove the RANGE V8. For my daily driving (when AFM bothers me the most), I keep it plugged in. Simple two minute (if that) install. Unbox, and plug into the easily accessible OBD-II port. Highly recommended to anyone that is bothered by the AFM. I understand this works on ALL GM vehicles with AFM.

Does not work on 2015 Silverado nor a 2009 GMC as bought AFTER TURNING TRUCK OFF. HOOOOOOOOOOOOOOOOOWEVER, after finding out the item actually came from a 3rd party (Zennith Performance) and may be OUTDATED (old software version) according to the actual maker, Range Technology...I sent it back to Amazon and said 3rd party. I thought I had purchased it from Range but that was not the case even though Range does sell on Amazon they say. I was unable to find their page and have since purchased one from the actual RANGE web site (also has choice of 3 led color's) and after speaking with them, was told it would be the latest and greatest version and would work with my 2015 Chevy. I will update more when that gets installed. Check Warning on Authorized dealer/sellers on Range Technology web site! ACTUAL PRODUCT USE: after installing the unit "AFTER" trucks were started, I got a blinking light and then a steady light. Unit seems to work very well in solving my AFM vs. 6-speed fight on whose in control problem and truck ran very smooth and was pleased. It worked good in the 2009 GMC also BUT when trucks were turned off, unit would also turn off. Once trucks were restarted, Unit DID NOT restart and that forced a disconnect/re-connect of unit to wake it up with truck running. I will update this review once I have the up to date unit from range Tech... Add't Notes: You also get your out of date unit, older units updated for Free, see Range Technology web site. UPDATE: Got my new unit from Range with Version 8 loaded. Installed it and went down road and truck went from V8 to V4...WTHO? It then went back to V8 and hasn't changed since, stays in V8 with steady blue light. Goes off when truck is off, comes back on when truck started. No faults are showing on dash or anything and truck run awesome and smooooth1 So far so good. A winner I think and ONLY BUY FROM RANGE!!

Excelente producto

I was not able to find any V6 users of any kind online who had tried this, but the manufacturer's site said it would work, so I gave it a try. I just got through test driving my V6 2015 Silverado - city and highway - and it works great. If you have stock exhaust, you won't notice the problems of AFM as much as with an aftermarket exhaust. After getting a single Magnaflow Super 44 - keeping all cats but getting rid of the resonator and muffler (sounds GREAT btw) - the problems increased a whole lot: shuddering at light throttle and low RPMs, more shuddering on automatic downshifts when stopping, making an air pump 'pst pst pst' sound when stopping, strange shifting (it must use two patterns for the two modes which confound each other) and feeling like a great amount of exhaust restriction at low-throttle acceleration, often prompting you to hit the gas harder just to clear it up. Well, this device clears it ALL up. It runs smoothly at all throttle positions at all speeds, has immediate power all the time, doesn't shift erratically nor does it feel like there is a potato in the exhaust pipe. I imagine I will only take this out for very long highway trips, but maybe not. It took a lot of digging to find out how the AFM system works: not only does it shut off fuel and spark, but it holds the valves open which can cause oil use and I can not find evidence that it cycles through the cylinders for even wear and heating which would be bad if it didn't. This is why the motor sounds like an air pump when you are decelerating - but not with this device. Bottom line: GET IT for your V6!

Works great to keep the engine out of the active fuel management mode and shifts a lot firmer. Just plug into diagnostic port under dash then start engine and give it a minute to re program ecm and enjoy your drive. Will lower fuel mileage slightly but worth saving lifter problems

Bueno pero yo no sentí que cambiara mucho el desempeño del motor. Solo que si se aceleró un poco más el motor. Al último termine vendiendo el dispositivo ha alguien que le sirviera más.

I've been using this on my 2017 GMC Sierra for a few years now and have had no issues. Keeps the truck in V8 mode all the time.

Works great. No more going into 4 cylinder mode. No more vibration. Great response from engine

This disabler will not work on a 2024 Silverado 6.2 engine. I ran it for a while while and paid no attention to what was actually going on and upon close monitoring I realized the range disabler was doing nothing. I should have returned it but waitered to long. 300 bucks gone. It’s a scam. The disabler that plugs into your ECM do not work either after doing some research.

Range works as it states and keeps my 2017 Silverado High Country in 8 100% of the time. Bought it as I have a nice MRBP exhaust system but didn't like the low tone when in 4v. Does it change the gas milage, that can be debated, as the liters doesn't drop to 0 when going down a grade. Or when slowing down, I truly think it now reads correctly and will drop to 3 liters per KLM. One thing for warning is if you park the your truck for a few days , pull the unit out as I feel it'll slow drain the battery. Reason for 4 star as the unit plugs in upside down and if Range Engineer's did there home work. The unit would plug in right side up for aesthetics.