Reviewed By bruce w (SAN ANTONIO, TX) Reviewed for a 2015 GMC Sierra —4/27/2017 9:14 AM
It was the right thing for me, it woke up my 6.0L gmc 2500HD I needed it for pulling my RV. Thank You
Reviewed By Robert L R (VALLEY, NE) Reviewed for a 2000 GMC Yukon —2/12/2016 9:15 AM
This is by far the first, best upgrade I've made to my Denali! Fairly easily installed (no thanks to GMC) and my 5.7 Vortec started right up with no codes. I experienced immediate increases in throttle response and overall power and drivability. Unbelievably, after a week or so of driving the vehicle, the power and responsiveness approved again! Puts me in mind of the old EPROM chips. I highly recommend this product to anyone looking for low dollar extra horses and low-end torque !