Reviewed By Reynaldo R (HOUSTON, TX) Reviewed for a 2010 GMC Sierra —3/3/2014 8:28 PM
Very happy with this programmer. Gained back power and some after larger tires (Nitto Trail Gapplers) I put on my 2010 GMC Sierra.
Reviewed By Timothy O (DAYTON, TX) Reviewed for a 2013 GMC Sierra —3/12/2016 4:39 AM
Have a 2013 Sierra crew cab 4x4, it ran good but with the Superchips programmer it now runs great! When I step on it the truck almost jumps. Maybe a slight boost in MPG. Highly recommend if you're looking for a performance boost.