Reviewed By Rick C (Altoona, PA) Reviewed for a 2007 GMC Sierra —2/7/2017 3:04 AM
I installed this on my 07 sierra. Simple as can be. I've noticed more power and acceleration. Transmission seems to shift smoother. Great investment.
Reviewed By NICK M (Alta Loma, CA) Reviewed for a 2007 GMC Sierra —1/2/2015 9:16 AM
I noticed the engine opens up now when I want it to. Before the response wasn't there. But it wasn't easy figuring out the shifting configurations. I had to research some forums but there's not much shared about it. I paid $275. Great deal
Reviewed By Diane D (WAPAKONETA, OH) Reviewed for a 2007 GMC Sierra —7/1/2013 8:22 AM
before i purchased i read the reveiws of all the tuners i could find for my truck. this one seemed to be the one for me. it works. however i havent noticed much of an MPG increase. which is why i bought the tuner. maybe if i could keep mt foot out of it, it will work better.