mpg

I have a 2000 GMC Jimmy as of right now with the good old 4.3L. Im pushing 240K nearing 241K. Not going to guess how long that 4.3L will last given we've gave it the best care possible since we bought it new. Im commuting to college about 25 miles away so that's 50 miles a day. My parents urged...

'15 Sierra - What's your highway MPG? Let me know what your averaging in a 2015 4WD crew cab 5.3 and 6.2 on the highway only. Don't really care about city mileage. Make these realistic - you know, driving down the interstate at 70, 75, and 80 mph. I have a new 2015 5.3 4WD Denali. Getting...