kntrygurl
New member
hey ya'll...i'm gettin a 6 inch suspension lift and 33 mickey thompson ATZ's on my truck tomorrow. My truck is a 10 Seirra (of course) 4x4 with the 5.3 and 6 speed tranny. i'm averaging 16 mpg right now completely stock..my question is - for those of you out there that something similar done to their truck what is the fuel mileage?