Reviewed By John D (SIMI VALLEY, CA) Reviewed for a 2012 GMC Sierra —8/25/2015 8:37 PM
I am up one mpg after one month of owning the range AFM disable and I also love the on demand power my Sierra was meant to put out. Not to mention this has also fixed a few hard shifting issues as well!! Thanks Range! Looks great too, has a cool looking blue light and looks very clean.