[Otsa580]

I'm getting 13 mpg on my ext cab 2010 4x4 with 3.42's with 800 miles on it, using the computer. I've been letting it warm up in the mornings thanks to the cold temperatures. My 04 ccsb with 373's and 06 impala ss with the 5.3's only got 15 on average. I expect this new truck to be a little better but only time will tell.