chip

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.

Hi, I'm new to the forum since this is my first GMC but have been a GM buyer since 16. I was wondering if anyone has tuned their 6.2l motor with a chip or other any other method that you could recommend. I looked into a supercharger but $5k+ is too much since I just bought the Denali. Any...