From the Driver Seat
Impressed is an understatement when it came to our driving impression of this tricked-out GMC. The ride was smooth, compliant, and there was no more harsh body flexing while making sharp turns at high speeds. The Belltech anti-sway bars made a huge difference, and the feedback from the 35-series tires was appreciated, while the ride wasn't abusive in any manner. There is certainly more "go" now, thanks to the combination of Airaid intake, Poweraid throttle-body spacer, Superchips Cortex programmer, and MagnaFlow exhaust. Now the 5.3L has no problem getting up and running at its peak. This install went very smoothly, but it is worth noting: pressing the factory upper control arm bushings out and pressing the new Belltech alignment bushings into place is something the average shade-tree mechanic will not be able to perform. Most parts stores with machining abilities will be able to press out and in these new bushings, though.