SKU, Range, GM, AFM Disabler, Green

Very easy to install. Just plug in and go.

I tried this on my 2014 Sierra with a 5.3 litre it does exactly what it’s supposed to do keeps in 8 cylinder making the truck run a lot smoother does not seem to shift and jerk all the time like it use to it did not affect the fuel mileage at all I am satisfied with this product and would recommend it for anyone who is wondering about it

I'm a retired professional mechanic . The Range does what it claims . I'm very happy with the results . Used it on my 2012 GMC Sierra 5.3 L

Loved it, works just like it says, throlltle feels more instant, no more stupid v4 mode

This little piece of technology has been 100 percent , completely , and without question a great product. From the minute I plugged it into my 2008 Silverado crew cab this thing has delivered. My truck now runs like it should. My AFM is off and I love it. Can you imagine the issues that go one when a V8 truck has to think OK now I'm a 4 cylinder , now Im an 8 cylinder . The things that the transmission has to accommodate. Well those days are gone. As an aside my DOD lifters that have to shut off and on are working all the time thus providing lubrication . I first heard about the lifter issues affecting all vehicles with AFM and DFM at a gas station about a year ago from a guy who took his chevy into a shop to have it disabled via a computer fix . I heard about these from a mechanic and that was it. My truck is so happy and now so am I.