programmers

Hi, i have a 2010 GMC Sierra with the 5.3 in it, extended cab. And im looking to up the fuel economy and a little bit of power to play with. I was just curious on what other owners have chose to put in their trucks because there are so many options to choose from.

Hey guys, I got a little extra folding money that I'd like to use on my 96 GMC 305. It's mostly used to drive to work but I do take it offroad, haul trailers, load it up with wood and rock. I've done a few things to it but I feel like it needs more power. I like the programmers that have...